mineralogy, geochemistry and genesis of carbonate …ijcm.ir/article-1-570-fa.pdfmineralogy,...

14
(Received: 20/11/2008, in revised form: 5/5/2009) Mineralogy, geochemistry and genesis of carbonate – silica serpentines (listwaenite) in north of Nain ophiolite (west of central Iran) M. Saidi 1* , S. Falahati 1 , M. Noghreyan 1 , M. Khalili 1 , M. Ghahraipour 2 1- Department of Geology, University of Isfahan 2- Geological Survey of Iran Abstract: The mantle sequence serpentinized peridotites of north of Nain have been converted to carbonate- silica assemblage known as listwaenite at various temperature and pH in response to CO 2 and SiO 2 bearing fluids. On the basis of carbonate and silica minerals content, three types of listwaenite have been recognized: carbonate, carbonate- silica and silica listwaenites. Generaly carbonate minerals are magnesite, dolomite, ferrite-dolomite and ankerite. Calcite and other carbonate minerals are rare. Silica minerals (including quartz, chalcedony and chert) accompanied by accessory Cr-spinel, chlorite, sulfide minerals also occur in listwaenites. Silica matrix in silica listwaenite containing high amounts of Hg, Ag and As elements and shows that these elements have transported by SiO 2 bearing hydrothermal fluids as arsenide complexes. KeyWords: peridotites, Listwaenite, Nain ophiolite, mercury !" #$% & ’() ’*% . * Corresponding author, Tel.: +98 (0311) 3247709, E-mail: [email protected] Vol. 17, No. 3, Fall 1388/2009 Downloaded from ijcm.ir at 6:16 +0430 on Sunday June 7th 2020

Upload: others

Post on 01-Jun-2020

3 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: Mineralogy, geochemistry and genesis of carbonate …ijcm.ir/article-1-570-fa.pdfMineralogy, geochemistry and genesis of carbonate silica serpentines (listwaenite) in north of Nain

(Received: 20/11/2008, in revised form: 5/5/2009)

Mineralogy, geochemistry and genesis of carbonate – silica serpentines (listwaenite) in north of Nain ophiolite

(west of central Iran)

M. Saidi1*, S. Falahati1, M. Noghreyan1, M. Khalili 1, M. Ghahraipour2

1- Department of Geology, University of Isfahan 2- Geological Survey of Iran

Abstract: The mantle sequence serpentinized peridotites of north of Nain have been converted to carbonate- silica assemblage known as listwaenite at various temperature and pH in response to CO2 and SiO2 bearing fluids. On the basis of carbonate and silica minerals content, three types of listwaenite have been recognized: carbonate, carbonate- silica and silica listwaenites. Generaly carbonate minerals are magnesite, dolomite, ferrite-dolomite and ankerite. Calcite and other carbonate minerals are rare. Silica minerals (including quartz, chalcedony and chert) accompanied by accessory Cr-spinel, chlorite, sulfide minerals also occur in listwaenites. Silica matrix in silica listwaenite containing high amounts of Hg, Ag and As elements and shows that these elements have transported by SiO2 bearing hydrothermal fluids as arsenide complexes.

KeyWords: peridotites, Listwaenite, Nain ophiolite, mercury

����� � ��� �� � ������� ���� � �� ����� ������ ��� !�"�#��$% &� '�()�� � '*��% ��.

*Corresponding author, Tel.: +98 (0311) 3247709, E-mail: [email protected]

Vol. 17, No. 3, Fall 1388/2009

Dow

nloa

ded

from

ijcm

.ir a

t 6:1

6 +

0430

on

Sun

day

June

7th

202

0

Page 2: Mineralogy, geochemistry and genesis of carbonate …ijcm.ir/article-1-570-fa.pdfMineralogy, geochemistry and genesis of carbonate silica serpentines (listwaenite) in north of Nain

)����� ����:��/�/������� ����:��/�/��(

'��,-�.��/$* ��0 ')��)� � '�� 1�2 3'*��� ' ��4$, !�"–'�(* )-��.�� (1�� ����)!8,$� 9�$� $.:�4(

!�;* ���<;�=*'.>?% ��*3=�$@� '*�� 39�='((: ���� 3=��/ '�$AB � $A� 3C

������� !�� ! "�#$�!�����%&'( ")*$�!� +,�- "./0�1�23 ���!/�4�+,�- ���-�1�&$5 ��)6� 7��$85! . �1�23

����:�,4.)/9 �83&0 :��;�� ")3 �2,8��9/1 <�= +,�� >�?3 �,�&,! <!)<@5/� �!/! /8A�B (�&#BC /,D�4 �E4 <.�F <�=CO2.SiO2. ��� G!/3 �� pH�4�2B/5 :(&?H� �B 7.��8� –")3 J);4 �,�&8�,� �!&2( �E4 ��,',1 )�! .���5 ��!.!/ L�1! /B <�=

�4�2B/5)�,�&�.� ,�@,2� ,�/*�C ,�,�'5 (�4�2B/5 �,�&8�,� N&� �1 O,',1 .,�4�2B/5_")3 J �F ��,',1 . ��,',1 )�! .�B�,�&8�,� �� P��Q �4�2B/5 ���5 �'5 �&R�@,2� ��= ,�,�&�.� ,+=C �,�&�.�7�2B/5 . �,�'5 . "�&B �/*�C . �!� �� /#� <�=

S5 /����)��!� �&TF /4.O,',1 <�=-�)@4�!&5 J��3 ,7/U . ��.)�'5 (J2,V1! %./5 ���� /���� �B "!/?= ,�/'5 ,�,4�?= ,�,4&0 ,�,�&8�,� �� @,� �/,9 . �,�&2,85!)��!� �&TF �= .<.�F ��,',1 �,�&8�,� �� ��,',1 :2,�-�W�B /���� "&,X ,. "/��

�� ��$� �5 �1! Y,21�C�(&?H� 7�& �B / �2( +! �5 )=��B��/0 �� <),21�C <�= <.�F <�=SiO2")3 J?F )�! .

�E��!�(, !�":�,4.)/9 ,�,�&8�,� ,"&,X �+,�� �,�&,!.

���@� -� ��B +,�.! !� �,�&8�,� Z[!.]�[\21 ], &4 <!/B <�=

�!/8�! 7�2B/5 <.�F ��1/0� Y,�� . Y,�–�,1/1 �@4�!&5 ���1/0� )2!/ /D! �� �5 �/,9��8/0 J*3 7�2B/5 -

�/B ��5 �B �)�! .+,2U ], &4 <!/B ���?3 <�^/�C . �9.�! ��\21 �^,',1 ���1/0� -! ��=–�� "���81! 7�2B/_ �&3 .

"��3 ��/X <.�F <�=Ca2+�Mg2+.CO2>&R �� 8�^3�#�� �,�&8�,� J,^$4 `(�B ��,2,8��9/1 <�=�&3 .

�,4.)/9 �B��/0 ���1/0� �,�&,! ")3 �8,2,8��9/1 <�=<�X -! O9 +,�� >�?3 a�b� c�$� N&� �1 �C </,0�1! "�/5 ��H! �,�&8�,� :�,�&8�,� ��4�2B/_ <�=

�,�&8�,� �4�2B/_ <�=–�,�&8�,� . ��,',1 ��,',1 <�= .�B��/0=�,�&8�,� J,^$4 -! J �F <� -! �4�2B/_ <�=Ca2+�Mg2+.CO2"�&B �2Q �,�&8�,� �_ ���F �� �)�! <.�F <�=

���_ �&#BC �/^'?( :H,8� �� O,',1 <�= -! �2Q <�=SiO2

")3 J �F )�! .<�X -! O9 �5 +1&d! ��?0�� -� </,09 �� ���/0 +,�- <��� e!@! �B ��1! "�!� f� �,�&,! :81&

"��gS8�,1 �)3 >�6 . J,*$4 �B /H2� <@5/� �!/! <! <�=J�0 Z��B.� �,��6 . �81&9 �� h/4 . -�� . �#8�*3 <�=

>&'1 J,*$4 <!/B %-W <[/�! . �)3 �?)g . �8/?= <�=�&#BC eA/U��?0�� <�= ���&0/0� –�81&9 �� !� <&X

�1! "�/5 S=!/ .�&#BC eA/U'8�� i&j1 �� �= �81&9 ]>bE�! P;1Ca �Mg�CO2\21 -! /#� / �2( .<�=

�1! ")3 /,�� .-! �2Q Z��3CO2 - H2O>���5 -! �&;( �B -�,4.)/9 �B e25!. �� �#8�*3 <�=�9/1 <�=�,8@. ��1 "

>�?3 �8,�&,! :��;�� Z)?( e�B �5 �1&��,g! :81&9 ��1/0�"�!� J,*$4 !� +,�� e=�5 �B "!/?= �)�!���$ 7�2B/5�=

*+�'4 �>&k�� ")2�&� :��l���m)���� (m�+�*,�./8*�! ��9 �:[email protected]

>�1S=)�=?3 �Z����@,�9 ��:E� -! �l�o �4 l��

Dow

nloa

ded

from

ijcm

.ir a

t 6:1

6 +

0430

on

Sun

day

June

7th

202

0

Page 3: Mineralogy, geochemistry and genesis of carbonate …ijcm.ir/article-1-570-fa.pdfMineralogy, geochemistry and genesis of carbonate silica serpentines (listwaenite) in north of Nain

)'Xpq"��?3 �r@,�9 �prss ���5 J,*$4 �#�&#U . �?,3 +,�- ��1�23. . .l��

BZ:7��- )��BKM:"�$���/5NA :+,��NY:@/,�SB:�!.@;1SHB :YB�B /�3TH:

��),F �B/4 TH :"�&5 J�U

N

�B /H2� . �83!t0 <�X /B ��B@,� \21 �� !� /#� / �2( .�,�&8�,� J,*$4�1! ")3 �= .�,�&8�,� �1�/B "�0)� -! �=

�1! )2��&1 �'?( . </u��\21 +! !/- �� ��B@,� �=�8$-"&,X . "/�� �+8�#24 �J*,� ����;5 �Y,21�C �bR <�=

)3 )2=!&A)>�v� <!/B]���[.(

�, F���>�ww;�� �wwB +)ww2U �ww9�&wwX!/Eww )=�$ww� ��ww�j2� �Z�&ww?2A��8,�&8�ww,� <�ww=.x)ww= <�!�/wwB �ww�&?� �!��+,ww,64

!/Ewww �� �)www3 �8,�&8�www,� ]www'8�� <�www=-� �www9 �� !��ww3!�.�ww1�/B9&*ww1./*,� <�ww= . �\2ww1�8A�2ww3 �ww,�4 y

-! �'�,ww h-�ww� . h-�ww� zwwj�� �ww�&?� �8,4.)ww/9 <�ww= )/8$www,B��= -B&�www[�(OVwww1 ��,�&8�www,� . �,2,8��9/www1 �

�ww1�/B�C�ww1! "�&wwB �$ww=.a9 ��ww5 +ww! <)ww6B %�ww0 �ww=.�wwB �)ww3 �8,�&8�ww,� ��ww/X �� ")ww3 ��wwH! ���ww5 <�ww=-�

Oww*! &ww4/9 {!/ww9 {.�)XRD ( . ����ww ! "�#$ww�!� ��8ww1! �ww�./8*�! |&*ww1./*,� -! "���)SEM – EDX ( >)ww�

XL30 �!/ww�4 L�)ww� �ww,B/4 "�#$ww�!� �ww2 Z)*$ww�!� �� )�)ww3 ��ww1�23 .�,�&8�ww,� �?,ww3 Pww,5/4 �A�2ww3 . �ww=

�C ���w� \21 Ow^! &w4/9 ���w1�&d&' {.� �wB �w=)XRF (

>)ww� sp sfor pioner �_/ww3 . ����ww ! "�#$ww�!� ���H�! �B �!/�4 �&��2,B �!�����_),1� %.

1�2�@��� '*��� �!&w� �8,�&w,! :w(&?H� -! �$w�B +,�� >�?3 a�b� �,�&,! zg!. �.- +! /8A�B �� �5 �1! <@5/� �!/! Z��g "�/A <&�'F

�1! ")3)J*3�.(\21 :��;�� �8,�&,! :(&?H� +! �8A�23 �83&0 e�B �� ��w,�.-/� ��w,�.� ��[�&B-��= J��3 �&A <!

/,9 . �,��."�/8�0 SHF �� �5 �1! �,2�5. �8,2,8��9/1 <!")3)�! .\2w1 <./B�w0 ��W&w�&5 Yw,�� . Yw,��!/8�! <�w=

Y!� ��,�!/0&[b9 �|./4.@! �E� <�= "-!)0 �<! ��$��B <�= �81&9 e�B @,� Y[b9 Y=C )F!. . ��W&�!� ���;�� +! <!

"�!� J,*$4 !�)�!]l�4��[.,� +,�� >�?3 ���,�&8� "� �� �w= �&#20 J0 <�81.� /8A�B . }&2X �+,�� /�3 >�?3 </8�&',_ +/8$,B "&_�9 J,�1 <�81.� >�?3 . }C /V1 <�81.� }&2X

)��!� !� �0�/8�0]�l.[�,�&8�,�)2��� �R�2� �A/B �� �=}C/V1 }&2X J,�� �B

+,�- �#8�� S= �B �=)F!. �8A�1Y=C \21 7�.�H� �� -1�4/5 <�=:�8/0 �!/g ���g&)�!.

���G]�! (�!/! �� �' ! �8,�&,! <�=)2B/?_ �B �X&4 �B +,�� >�?3 �,�&,! �,6g&�]p�[}(+,�- . �#21 <�=)F!. Z)3 "��1 :$�� -�1�/B ��&� :�j2� �8A�1]�.[

Dow

nloa

ded

from

ijcm

.ir a

t 6:1

6 +

0430

on

Sun

day

June

7th

202

0

Page 4: Mineralogy, geochemistry and genesis of carbonate …ijcm.ir/article-1-570-fa.pdfMineralogy, geochemistry and genesis of carbonate silica serpentines (listwaenite) in north of Nain

�<),61 "/�� ��8Fb�!/�g ��','A ���,�&9 �!/! �1�23 ���5 . �1�23�&'B �'H� l��

'��,'*���-��.�� �"�,�&8�,� ���w_ ��wE� �wB +,�w� >�?3 <�= �w1�23 /wB �w2B .S,�ww�4 <)ww2B]��["./ww0 �ww1 ���)�4�ww2B/_(��)�4�ww2B/_

–��ww,',1 (.�)��ww,',1 (�ww� �!/wwg)ww�/,0 .L�ww1! /wwB�!.!/ww �,�&8�ww,� ��&wwX&� �4�ww2B/_ ���ww_ N&ww� +/ww4 <�ww=

"./ww0 /ww- �wwB +,�ww� >�?ww3 �� �4�ww2B/_ . �ww8@,2� <�ww=�ww� S,�ww�4 �8,�&ww�.�)�&ww3 .�,�&8�ww,� -! "./ww0 +ww!�� �ww=

\ww�� <�&ww�� �ww4 ),�ww1 ��ww^3 �jww1 <!�!� �8ww1� :ww�&?� "�!� J,^$www4 !� �2$wwwA i&jwww1 . "�&wwwB)www�! .�&www?2A�

�!&w?= �!/0&w9&4 �4�w2B/_ �!&w� >bwE�! Jw,�� �wB �,�&8�,� "/ww�F <!�!� . �8ww3!� �ww�bE�! <�ww=)J^ww3a�(�ww1! .�wwB

���ww5 /ww#� N!&ww�! ��ww,�&�.� . �ww@,2� "!/ww?= �4�ww2B/_ <�ww=�ww/^�C )w2���–�ww,�&�.� �w/��ww1�/B �� @ww,� �,�w'_ -

<�ww=XRD.SEM- EDX ")ww3 "�!� c,�$ww4 )ww�! .-!���wwww_ )wwww3��wwww�B �4�wwww2B/_ <�wwww= �^,d!-&wwww� <�wwww=

�www�&'0 ��,8www1bB&�!/0 <!)J^www3b�(+5/www9 x�*www3 ����ww�&'0�<�!&�<!�ww1! ")ww3 Jww �F �ww3/B ..\2ww1 �� ��ww=

�5 wX�� :))w3 �)w3 �8,�&8�w,� ��w,� . +&w,�! <�w��B ��*;ww3 �ww�B �ww5 ")ww3 �8,2,8��9/ww1 +�ww5./,9&4�! �� !� <!

"��.C �&wwX. �wwB \2ww1)ww�!��ww1! �&�$ww� .�wwB J2,Vww1! %./ww5�$$5 ��B�")w3 �/wA .7�)w� �wB �w� ")w� zR�w�� ��-

. �ww1! �8,�&8�ww,� zR�ww�� �� �ww,�.! ���ww5 �ww�24 �ww5 �&ww3��$ww�:\2ww1 "�#8ww1�A �wwB Yww,��!/8�! �ww1! .�ww�0� <�ww=

. O,',ww1�!��&ww'Bww= ")ww� zR�ww�� �Tww6B �� ��.)�ww'5 <��ww�&ww3��)ww3 ��ww,',1 -�ww -! ��$ww� . )Oww94�ww2B/5 -! �

�!� �)3�).�w0� �� J*w3�&A 7�&w �wB �B�w�/0 �,�w'_ -"�!� �!/wwg SX�ww�4 ��&ww� !� \2ww1 �!)ww6B �ww_ ��ww,',1 <�ww=

�w� ")� ��1! �&w3)J^w3c�.(�wB �(�6w3 ��.)�w'_ :w0� �ww�-.� ��ww,� 7�&ww <!����ww_ ��ww,� ww2B/_ <�ww= <�wwX �4�

�ww1! �ww8/0 .�4�ww2B/_ �,�&8�ww,�–�!.!/ww �ww_ ��ww,',1 -��w1! "�!� J,^$w4 +,�w� >�?w3 �� !� �,�&8�w,� N&w� +/4

���ww_ �ww3�;�! -! ")ww�C �&wwX. �wwB O,',ww1 . 7�ww2B/_ <�ww=�ww1! .\2ww1 +ww! �� �^;ww3 �ww�B <�ww��B �ww= +,8��9/ww1 <!

-! �ww_ �ww,�&2,8_! . �ww/'_ @ww,� . �ww1! ")=�$ww� JwwB�g _ ���1/0���� ")w3 Jw �F ���w� \2w1 �w,�� <�w= �� �)w�!

�,�&8�ww,� -! �8ww1� +ww!)ww��!� �&TwwF �ww= .�� J2,Vww1! %./ww_

1- Open Space Filling 2- pull – apart 3- Interstitial

�!.!/ww �,�&8�ww,� -! N&ww� +ww!�ww1! /ww#� N!&ww�! -! /ww4 .���ww_ �&w#BC %&wH= -! �w3�� e��ww_! G!/w3 �wE4 ")w3�� <�ww=

��w1/0� �w,�./_ �w/ �wB �w3!&F �� \2w1 �wB ��,',1 �ww1! ")ww3)J*ww3d�.(&wwA���ww5 �� �0)ww3 "�� %./ww_ <�ww=

�ww1! ")=�$ww� JwwB�g J2,Vww1!)J^ww3e�.(�� �4�ww2B/_ ���ww_ S@ww,2� N&ww� -! /8$ww,B �,�&8�ww,� -! N&ww� +ww!�ww1! �!� .

�ww�j2� . f� <-&ww� �;ww3 �ww,�&�.� zR�ww�� -! �Tww6B �� <! �ww1! ")=�$ww� JwwB�g)J^ww3f�.(���ww_ . O,',www1 <�ww=

7.�ww�8� G!/ww3 �� . )28�ww,� �!@ww?= 7�ww2B/_Eh , pH .}��/0 <��� ")w3 +,$w� �w4 �= )w�! .%&wH= zR�w�� �Tw6B ��

�&ww#BC �ww3!&F >bwwE�! `ww(�B \2ww1 �wwB ��ww,',1 <�ww= "/www@X �www�B J,^$www4 . ")www3 7�www2B/_ �www1! "�!� !� <!

)J^ww3g�.(�ww0� zR�ww�4 . }.�ww24 O,',ww1 <�ww=�7�ww2B/_ }�www�/0 �www,=�� . G!/www3 �B.�www24 /www,,�4 :��$www� �www1�=

)J^ww3h�.(��ww,',1 �,�&8�ww,� �C �� �ww_ +,�ww� >�?ww3 -! e,wwBo�"�!� J,^$ww4 O,',ww1 !� \2ww1 SwwHF )ww ��

��!� �!/wwg �ww,?=! %.� :wwX�� �� �ww�!.!/ ��wwE� �wwB ��ww1! .�w1! ")w3 J,^$w4 �w�!� @w� O,',w1 -! \21 :2,�- .%./w_

�&w#BC �w_ e��w_! G!/w3 �E4 J2,V1! �wB ��w,',1 <�w="�/ww_ Jww,?E4 \2ww1 J)ww;4 �ww,�./_ �ww/ �wwB ��ww��?4 �)ww�!

")ww3)ww�! .@,��ww�C ��SEM-EDX\2ww1 +ww! -! :ww2,�- �� �ww= ��X&ww4 JwwB�g /��ww�� ��ww,',1Hg �Ag .As c,�$ww4

)�)3 "�!�)>.)X�.(

'���#E N!&ww�! . �,2,8��9/ww1 ��ww[�&B-��= ��,?,ww3 :ww@H4 ��ww8�

�,�&8�ww,� ��,?,ww3 :ww@H4 �wwB "!/ww?= +,�ww� >�?ww3 <�ww=7�ww2B/_ �ww4 <�ww= �8�ww$�]��[>.)wwX ���)ww�C ")ww�! .��

Sw�� ��,�&8�w,� N!&w�! +,,64 �!@w,� �w=/8�!��9 +/w4SiO2.LOI\2ww1 +ww! �� �ww1�= .�,�&8�ww,� �� L�ww1! +ww! /wwB-

�!@ww,� �4�ww2B/5 <�ww=SiO2+,�ww9 )+,�ww9 �ww8@,2� N&ww� �� �8,�&ww�.� -! /ww4(�!.!/ww /��ww�� Jww,�� �wwB �ww�. �CO2.

�ww�&0 �!@ww,� �/ww#� �!/ww <�ww=LOI�ww1W�B .�&8�ww,� ���,-�w� ")=�$w� �.�!. )w�.� ��,',1 <�= �w5 <�&wR �wB ��&w3

�!@ww,�LOI )ww �� . +,�ww9 SiO2�ww1W�B .�,�&8�ww,� <�ww= �4�ww2B/5–�!@ww,� ��wwE� �wwB Sww= ��ww,',1 SiO2Sww= .�!)ww��LOI �ww� ")ww� /ww#� N&ww� .� Gww1!. )wwF )�&ww3

)J*ww3�.(-! �ww8@,2� N&ww� �4�ww2B/5 �,�&8�ww,�MgO <. /4W�wwBSiO2.CaOww9 <+,� �,�&8�ww,� �wwB �;�ww� /ww4-

Dow

nloa

ded

from

ijcm

.ir a

t 6:1

6 +

0430

on

Sun

day

June

7th

202

0

Page 5: Mineralogy, geochemistry and genesis of carbonate …ijcm.ir/article-1-570-fa.pdfMineralogy, geochemistry and genesis of carbonate silica serpentines (listwaenite) in north of Nain

)'Xpq"��?3 �r@,�9 �prss ���5 J,*$4 �#�&#U . �?,3 +,�- ��1�23. . .l�m

�ww1! �!��&wwA/B �8,�&ww�.� N&ww� <�ww= .�,�&8�ww,� �� <�ww=/��ww�� �8,�&ww�.� N&ww� �4�ww2B/5CaO .MnO �!@ww,� . W�wwB

Fe2O3.MgO�ww1! +,�ww9 .�ww�!� i&jww1 <.� "�,ww1 <�ww= <�=),�ww5! �&wwX. Jww,�� �wwB �4�ww2B/5 �,�&8�ww,� �� �,�ww'5

�ww1! @ww2#2� ."&ww�g f/ww1 \ww��\2ww1 +ww! <!�wwB �ww= Jww,�� �ww1! +ww=C <�=),�ww5.�),= �ww �=),�ww5! �&TwwF .�!�&ww?� ��

��ww4 �ww1SiO2-Fe2O3-CaO + MgO]��)[J*ww3l(��,�&8�wwwww,� GwwwwwA <�8wwwww1!� �� �4�wwwww2B/5 <�wwwww=

-CaO + MgO SiO2)CaO + MgO>50%.

50%<(SiO2�w� �!/g �,�&8�w,� �w5 ���wF �� �)w�/,0 <�w= �4�www2B/5–Pwwwjg �wwwB ��www,',1 SiO2Ywww�@� . /www4

,��,�&8� Pwjg �wB Yw�@� ��,�wB ��w,',1 <�w= SiO2)�wB -! e,Bo�) �� (SiO2�� �!/g)�/,0.

�,�&8�www,� -! e,wwwB �wwwB �8,�&www�.� �4�www2B/5 <�www=��)ww ��CaOYww�@� �ww� �!/wwg S,�ww'5 Pwwjg �wwB /ww4)ww�/,0 .

�,�&8�ww,�4�ww2B/5 <�ww=�–�� ��ww,',1 :ww��,� GwwASiO2-MgO�,�&8�www,� .Pwwwjg Ywww�@� ��www,',1 <�www=SiO2

")���)�&3 .

�H�Ca("/�F J,^$4�4�2B/_ �,�&8�,� �� ��bE�! <�= .b(7�2B/_�=<��&'0 �4�2B/_ �,�&8�,� �� <!)PPL .(c(,�'5�:0� �� �B��/0 ��,',1)PPL .(d(�,�&8�,� �� �,�./_ �/)PPL .(e(�,� �� �8�,�0 ��B �B J2,V1! %./_ �,�&8)XPL .(f(��j2� �,�&�.� �� <!

�4�2B/_ �,�&8�,�–��,',1)PPL .(g("/@X ��B ��,',1 �,�&8�,� �� <!–�4�2B/_ )PPL .(h(�0� zR��4 �� O,',1 . 7�2B/_ <�= �,�&8�,�)PPL .(���5 <���8A! ��b( L�1! /B �=]�m[�Cal ��,�'5 <!/BDol . �,�&�.� <!/B Cr-sp/5 <!/B �1! J2,V1! %..

cal

Cr-spl

a b

c d

f

g h

Dol

Cr-spl

e

در2345ات /.ر,+789:+;8<

Dow

nloa

ded

from

ijcm

.ir a

t 6:1

6 +

0430

on

Sun

day

June

7th

202

0

Page 6: Mineralogy, geochemistry and genesis of carbonate …ijcm.ir/article-1-570-fa.pdfMineralogy, geochemistry and genesis of carbonate silica serpentines (listwaenite) in north of Nain

�<),61 "/�� ��8Fb�!/�g ��','A ���,�&9 �!/! �1�23 ���5 . �1�23�&'B �'H� l��

���I=@H4:SEM - EDX�2,�- . O,',1 -! +,�� >�?3 �,�&8�,� �� ��,',1 <b.d )below detection limit(.

�,�&8�,� �,4 ��,',1 ��,',1 �4�2B/5���,',1

��,',1 �4�2B@5��,',1�

�4�2B/5���,',1

SiO2(wt%) oo/�� l/m� �/mo ��/ml �l/�� ll/�� TiO2 ol/� ��/� ��/� � � �l/�Al2O3 l�/� ll/� �m/� �l/� l�/� om/�Cr2O3 �/� �o/� ��/� b.d. �o/� �m/�Fe2O3

T �m/� � lo/� b.d. oo/� ��/�MnO �m/� �l/� �/� b.d. ��/� ��/�MgO ��/� � ��/� mm/� mm/� lo/�CaO ��/� ��/� ��/� �m/� l�/� �m/�Na2O b.d. b.d. b.d. ��/� �l/� o�/�K2O ��/� �o/� ��/� �o/� �/� �/�ZnO ��/� ��/� ��/� b.d. �l/� o�/�NiO �/� ��/� ��/� b.d. �l/� ��/�AgO b.d. b.d. b.d. �m/� ��/� �l/�HgO2 b.d. b.d. b.d. ��/� m�/� m�/�As2S3 b.d. b.d. b.d. �m/� l�/� o�/�total ��� ��/mm ��/��� ��� ��� m�/m�

���IC{.� �B +,�� >�?3 �� �,�&8�,� N!&�! . �,2,8��9/1 ��[�&B-��= ��,?,3 P,_/4 XRF .NAA .7�2B/_ ��,?,3 P,_/4 <�=�4-8�$��]��[�1! ")3 "�!� ����� <!/B) .��&?� �!)64 @8�!/9 JA!� �!)(!+,#��,� �� �=)�!.(

\21 �,4 �,�&8�,� �4�2B/5���,',1

�,�&8�,� 1��,',

�,�&8�,� ��,',1

�,�&8�,� �4�2B/5�8@,2�

G1&8� �,2,8��9/1

)�(

�[�&B-��=S��1

G1&8� �,�&8�,��4�2B/5

*�8@,2� )�(

G1&8��,�&8�,�

�4�2B/5 *�8,�&�.�

)�(

G1&8��,�&8�,��4�2B/5–��,',1 *

)l(

G1&8� �,�&8�,�

*��,',1 )�(

G1&8� \21�4�2B/5

SiO2(wt%) ��/�� om/�� ��/�� o/�� ��/�m o�/�m �l/�l mo/�� ��/ll ol/�l ��/o

TiO2 b.d. b.d. ��/� b.d. �o/� ��/� ��/� ��/� ��/� ��/� ��/�

Al2O3 o�/� ��/� m�/� l�/� �m/� ��/� ��/� � ��/� ��/� �m/�

Fe2O3 ��/� l�/�� ��/o ��/� ��/� �/m ��/� ��/� ��/o ��/o ll/�

MnO �m/� b.d. ��/� ���/� �m/� ��/� ��/� ��/� ��/� ��/� �l/�

MgO ��/�� mm/� �o/� ��/�� �m/�l m/l� ��/�l ��/�� ��/�� ��/� �m/�

CaO l�/l o�/� m�/l o�/� �l/� �o/� �o/� �l/�l �o/�� ��/� �m/l�

K2O �o/� �o/� �l/� ��/� �l/� ��/� ��/� �o/� o/� o�/� ��/�

LOI ll/�� ��/� ��/o ��/l� ��/�� ol/o ��/�m �o/�� ��/�� l�/� ��/�o

MgO / SiO2 o�/� o�/� ��/� �o/� ml/� ��/� ��/� ��/� oo/� ��/� ��/�

As(ppm) b.d. ����� b.d. b.d. b.d � �/l� ��/�� l�/m ��/�� b.d

Cr b.d. o��� o�� b.d. b.d �o�� �l�o o/���� ��l� o�m� ��

Ni ���� ���� b.d. �oo� b.d ���� ���� ��/���� �om� ���� ��

Sr b.d. b.d. b.d. b.d. b.d � ��o �/l�l �o/��� �o� ���

Co b.d. b.d. b.d. b.d. b.d ��� ��/�� �m/�m o�/�� ��/oo b.d

*�&9 �!/�g )���� (

Dow

nloa

ded

from

ijcm

.ir a

t 6:1

6 +

0430

on

Sun

day

June

7th

202

0

Page 7: Mineralogy, geochemistry and genesis of carbonate …ijcm.ir/article-1-570-fa.pdfMineralogy, geochemistry and genesis of carbonate silica serpentines (listwaenite) in north of Nain

)'Xpq"��?3 �r@,�9 �prss ���5 J,*$4 �#�&#U . �?,3 +,�- ��1�23. . .l��

.

���J�!�&?� LOI P�F /BSiO2.�� �!�&?� +! �� /���� P�F /B !� �,�&8�,� N!&�! �!&4LOI .SiO2�!� @,?4 .

�H�K��4 �1 �!�&?� SiO2-Fe2O3-CaO + MgO]��.[�!�&?� +! �����,�&8�,� �!&4�4�2B/_ . ��,',1 ��4�2B/_ <�= �!� ��,',1 ) �� �!)�� P�F/BSiO2, Fe2O3, CaO + MgO�!� @,?4 .

�H�L�!�&?�SiO2-CaO-MgO]��[�,�&8�,� Pjg Y�@� ��,',1 <�=SiO2�,�&8�,� .�4�2B/5 <�=�8@,2� :�&0 �� <�81!� GA MgO �SiO2Y�@� .MgO �� �!/g)�/,0 .�,�&8�,� . �`'v� :��,� �� �8,�&�.� :�&0 �4�2B/5 <�=�,�&8�,�4�2B/5 <�=�–��,� �� ��,',1 :GAMgO-SiO2�� �!/g )�/,0.

SiO2

LOI

�B&1� 7�2B/5 < "�!�]��[��A&4 Sb( �B <�= ��&?��!/�g -! ��&9 ]�[

������ �������� ���� ������ _������

������ �� ���� ������ ����� ���

�� � ��������������� � � ������ ������

������ ������ _��� ���� ������� �� ���� ������ ����� �� ���� �������

SiO

CaMg

8,�&�.� �4�2B/5�8@,2� �4�2B/5�"�!��B&1� 7�2B/5 <]��[

��A&4 Sb( �B <�= ��&?��!/�g -! ��&9 ]�[

������ ������� ���� �������_������

� ���� ������������� ����� ���

� ����������������� � � ������ ������

������ ������ _� ������ ���� ��������������� � ���� �������������

������ ������� ���� �������_������

� ���� ������������� ����� ���

� ���������� ��������

� ������ ������ ������ ������ _� ������

Fe2O3CaO+MgO

SiO2

����� �������

� ����� �������B&1� 7�2B/5 < "�!�]��[

��A&4 Sb( �B <�= ��&?��!/�g -! ��&9 ]�[

Dow

nloa

ded

from

ijcm

.ir a

t 6:1

6 +

0430

on

Sun

day

June

7th

202

0

Page 8: Mineralogy, geochemistry and genesis of carbonate …ijcm.ir/article-1-570-fa.pdfMineralogy, geochemistry and genesis of carbonate silica serpentines (listwaenite) in north of Nain

�<),61 "/�� ��8Fb�!/�g ��','A ���,�&9 �!/! �1�23 ���5 . �1�23�&'B �'H� l��

'0�8%� !�"�� ���–'0"�, ���ww_ �wwB �,�&8�ww,� J,^$ww4 <!/wwB �ww[�&B-��= �2,$ww��X-�wwwu'Q �� /www,,�4 %@'8�www� 7.�www�8� �?,www3 . �www1�23

<�=),�ww_! �ww1! \2ww1 �� }�ww,?5 /ww �2( . �'ww ! .<!/wwB ;w1�E�:S8��w#� �$w!@! –�$w=�5 /ww- �w/R �wB /w �2( J?(/5S�]��.[

�MM�� '0MM�8%� �MM '0MM"�, =)� ���2�MM* �MM�� O��MM* -MME��42��"/Q�MM* � ���2�MM* 9�MM�" �MM��

9�*$R S���2�* ��� O��* -E��42��" � (ww1 . S��ww1 �ww[�&B-��= ��,?,ww3 :ww@H4\2��ww1/0� <�ww=

>.)wX �� +,�w� >�?w3 �,�&,!�")w�C )w�! .Jw �F �)w( -!���ww#� ��ww�b( +8/ww0 /wwu� �� �.)wwB�wwB OVww1 . �ww8/0 S8

�ww���:-�ww1 )ww �� !\2ww1 .� �� /wwu� ��&ww� <��ww1/0� �ww�

)>.)wwX �� S��ww1 ��ww;/�4 �ww[�&B-��=�(��ww1/0� .�ww�b( �;v�)e!@! (�w�2� �w)e=�w5 (�)w( -! Jw;g !� "�!� �!/wg

��$www� �!�&www?� <.� !� ��www8� ."�!� Swww!)>.)wwwX�.l.J*ww3�(.J*ww3 �� �ww*��2U ��ww� ")=�$ww� �&ww3 ,SiO2,Al2O3,CaO ,MgO .Cr�,�&8�www,� �� �4�www2B/5 <�www=

�ww1! �ww8� e=�ww5 �ww8@,2� N&ww� .e=�ww5MgO +ww! �� �,�&8�ww,� -! �8ww1�Sww5 /ww#� N!&ww�! �wwB �;�ww� �ww=�ww1! /ww4 .

�!@ww,� e=�ww5Al2O3�,�&8�ww,� �� �ww8@,2� �4�ww2B/5 <�ww= �� !� Sw_ /��w�� �wB �!&4 -! �8w1� +w! �� J2,Vw1! %./w5 /w4\2ww1 �!� �;�ww� �ww= .�!@ww,� +/8$ww,BSiO2.Fe2O3�� ��&8�,� �w� ")=�$w� ��w,',1 <�w= �&w3 .�!@w,� JwB��� ��

MgO .LOI �,�&8�ww,� -! �8ww1� +ww! �� �wwB �;�ww� �ww= �,2,8��9/1 . �[�&B-��=�1! �8� e=�5 7)3 �B.

���IJ�C �$2� \21 . �,�&8�,� N!&�! �?,3 P,_/4 +,#��,� +,�� >�?3 �,�&,! �� �=)��&?� �!)64 @8�!/9 JA!� �!)(!�1! +,#��,� �� �=.(

5!),� ��=&B-[� �

S��1 ��;/�4)�(

��=-B&�[�"@,2,8��9/1

)�(

�,2,8��9/1�4�2B/5)�(

+,#��,� �,�&8�,�

4�,�4�2B/5 �8@,2�)�(

+,#��,� �,�&8�,�

�,4 �4�2B/5 �8,�&�.�)�(

+,#��,� �,�&8�,�

�,4�)o(

+,#��,� �,�&8�,�

�,4�)o(

SiO2(wt%) o�/�m l�/l� �/�� o�/�� mo/�� l� �o/��

Al2O3 ��/� ��/� ��/� l/� � ��/� �m/�

Fe2O3T ��/m ml/� ��/� m�/� �/� �m/� �o/m

MgO m�/l� ��/�� �m/�o ��/�� ��/�� ��/�m l/�

CaO �o/� ��/� ��/� o�/� �l/�l �l/� o�/�

K2O ��/� ��/� �l/� ��/� �o/� ��/� ��/�

LOI ol/o �/�� �m/�l ��/�� �o/�� �o/�l �o/o

Cr(ppm) �o�� ���� ���� �l�o o/���� ���� �/���o

Ni ���� ���� �m�� �m�o ��/���� �m�� ���o

���IKe!@! S8��#��,2,8��9/1 �[�&B-��= �� J^,� . %./_ ��' ! / �2( e=�_ )S��1 �[�&B-��= �B �;�� �,�&8�,� N!&�! . �,2,8��9/1 �" +,�� >�?3 �,�&,!)�.h.>.)X�.(

�&?�:��1/0� ��=-B&2,8��9/1 �[��8,

")3 �4�2B/5 �,2,8��9/1

�,4 �,�&8�,� +,#��,� �4�2B/5 �8@,2�

�,4 �,�&8�,� +,#��,��8,�&�.� �4�2B/5

�,�&8�,� +,#��,��,4�

�,4 �,�&8�,� +,#��,��

SiO2 ��/� �m/�� ��/�� �o/�� o�/� �

Al2O3 ��/� om/� �/�� �o/� ��/� l/�

Fe2O3T l/�� �o/�� ��/�� lo/�� o�/�� ��/�

MgO ��/�� ��/�� lo/�� ��/�� �l/�� ��

CaO �/�� �/�� ��/�� �o/� �/� �/�

K2O �l/� l�/� o�/� ��/� l�/� l/�

LOI ��/� ��/� ��/� ��/� o�/� m/��

Cr ��/�� ��/�� o�/�� ol/�� l/�� �/�

Ni ol/� ��/� l�/�� �/�� ll/�� m/�e=�5 ��/o� ��/�� ��/m� �/�� �/�� m/��e!@! ��/� o�/� �m/� ��/�� m�/m ��/��

e=�5 +e!@! m�/� �m/� �l/� ��/� ��/� ��/�

Dow

nloa

ded

from

ijcm

.ir a

t 6:1

6 +

0430

on

Sun

day

June

7th

202

0

Page 9: Mineralogy, geochemistry and genesis of carbonate …ijcm.ir/article-1-570-fa.pdfMineralogy, geochemistry and genesis of carbonate silica serpentines (listwaenite) in north of Nain

)'Xpq"��?3 �r@,�9 �prss ���5 J,*$4 �#�&#U . �?,3 +,�- ��1�23. . .l��

�H�Te!@! S8��#� ���' ! / �2( e=�_ LOI �Cr.Ni �[�&B-��= �B �;�� �,�&8�,� N!&�! . �4�2B/_ �,2,8��9/1 ��,2,8��9/1 <!/B +,�� >�?3 �,�&,! S��1)�=�,2,8��9/1�=�4�2B/5 �,2,8��9/1�=��8@,2� �4�2B/_ �,�&8�,�l=2B/_ �,�&8�,� ��8,�&�.� �4�o=

�4�2B/_ �,�&8�,�–���,',1 �=��,',1 �,�&8�,�.(

�,�&8�ww,� �� �'ww ! /ww �2( �ww'j� e!@ww!�m/�)ww �� ��ww8@,2� �4�ww2B/_ :ww�&0 <!/wwB �ww�-.��/�� �ww�-. )ww ��

��8,�&ww�.� �4�ww2B/_ :ww�&0 <!/wwB�m/m.��/m�ww�-. )ww �� �,�&8�ww,� <!/wwB Pww,4/4 �wwB �4�ww2B/_ <�ww=�. ��ww,',1

,1�ww1! ��ww,' ./ww �2( e=�ww5���,�&8�ww,� ��,2,8��9/ww1 4�www2B/5�4�www2B/5 �,�&8�www,� ����,�&8�www,� . ��www,',1

Pwww,4/4 �wwwB ��www,',1��/��m�/l��/�.�/m)www �� ��-. �1! .

�ww� ��$ww� 7�;ww1�E� +ww! �ww[�&B-��= �ww5 )ww2=� <�ww= �,2,8��9/ww1 �wwB J)ww;4 ��ww/X �� +,�ww� >�?ww3 ,/��ww��

<��ww-CaO ,MgO� �ww1� -! "�! Gww� �ww5 ���wwF �� �)ww�!

-2.5

-2

-1.5

-1

-0.5

01 2 3 4 5 6

MgO

-3

-2

-1

0

1

2

3

4

1 2 3 4 5 6

CaO

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

1 2 3 4 5 6

K2O

-1.5

-1

-0.5

0

0.5

1

1.5

2

2.5

3

1 2 3 4 5 6

LOI

-1.8

-1.6

-1.4

-1.2

-1

-0.8

-0.6

-0.4

-0.2

0

0.2

1 2 3 4 5 6

Cr

-2

-1.5

-1

-0.5

0

0.5

1

1.5

1 2 3 4 5 6

Ni

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

2.5

1 2 3 4 5 6

SiO2

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

2.5

3

1 2 3 4 5 6

Al2O3

-3.5

-3

-2.5

-2

-1.5

-1

-0.5

0

0.5

1

1 2 3 4 5 6

Fe2O3

1 2 3 4 5 6

1 2 3 4 5

1 2 3 4 5

1 2

3

4 5 6

1 2 3 4 56

3 4 5Dow

nloa

ded

from

ijcm

.ir a

t 6:1

6 +

0430

on

Sun

day

June

7th

202

0

Page 10: Mineralogy, geochemistry and genesis of carbonate …ijcm.ir/article-1-570-fa.pdfMineralogy, geochemistry and genesis of carbonate silica serpentines (listwaenite) in north of Nain

�<),61 "/�� ��8Fb�!/�g ��','A ���,�&9 �!/! �1�23 ���5 . �1�23�&'B �'H� l�l

/��ww�� �;�ww� e!@ww!Al2O3.Ni�C �� �ww� ")ww� �ww=-�&3.

!�)��REE-��.�� � �"Sw_ <!�!� �w_ )28�w= </w �2( �@wX �_�wA }�,?_ / �2(-��0�-!&ww= <�=)ww2!/ >&wR �� . "�&wwB >bwE�! �ww,'B�g +/w4

)ww2_/E8��� ��8;�ww� ���ww1/0� . +,�ww9 :wwX�� ��&ww0/0�]��.[�! !tww� <&ww#REE �ww� ��ww1/0� \2ww1 �� ��ww;/�4 ��ww�B

)ww3�B �C "�#8ww1�A \2ww1 �B�$ww� ./ww �2( �wwu'Q Gww1&8� +,�ww� >�?ww3 �,�&8�ww,� N!&ww�! �� �_�wwA }�ww,?_]�[.

7�www2B/_ �8�www$� �www4 <�www=]��[>.)wwwX ��oGwww1&8� �

�u'Q <�=REE "��wg :8w1&9 . ��)w2_ �wB ")w3 ��wH2= <!J^www3 �� ���wwwg&�.�")www�C )www�! .<&www#�!REE <!/wwwB

7�ww2B/_ �ww4 <�ww= �8�ww$�]��[")ww3 "��.C ��ww��� <!/wwB�ww1!.�ww� ")=�$ww� �ww^��2U �� �_�wwA ���ww� /ww �2( ��&ww3

�,�&8�w,� )w��!� +,�w9 �wu'Q �w= .�w�4 ���ww� /w �2( �0)w3 �,�&8�w,� �� �_�A "��wg :8w1&9 �wB ��w��� �� �w= ���wg& <!

�1! /8$,B .\2w1 +w! �w5 �wH�C -! �?$wU/1 �8w3&0 -! �w=0�8/ )w�.� �)w�!REE �w�4 �w?_ @w,� ��)w2_ �wB �;�w� -

�ww� ��$ww� �0)ww3 }.� <W�wwB :wwX�� Jww,�� �wwB �ww_ )ww=��C "�#81�A \21 �$�B�1�= .

���ILG1&8�REE �,�&8�,� N!&�! �� +,�� >�?3 �,�&,!]�[7�2B/_ .<�=�48�$��]��[.\21 N&�

REE (ppm)

�2B/_ �,�&8�,� N&� �4�8@,2�]�[

&8�,�.N&� �4�2B/_ �,��8,�&�.�]�[

�4�2B/_ �,�&8�,����,',1]�[

�,�&8�,���,',1]�[

�B&1� 7�2B/_]��.[

La ��/� ll/� �m/� ��/� �

Ce Nd

�o o/��

��/���/��

�/���

��/��l

o/�� �/l

Sm ��/� ��/� �l/� �l/� �/�

Eu ��/� �o/� ��/� ��/� �/�

Gd oo/�� ��/l �l/� o/� �/�

Tb l�/� ��/� ��/� �o/� �/�

Dy l�/� l�/� l�/� ��/� m/�

Tm �l/� ��/� �o/� o�/� �l/�

Yb �o/� ��/� ��/� om/� o/�

Lu �/� �m/� �l/� ��/� �/�

Ce/Yb m�/� ��/� ��/� �o/l ��

�HMM�U<&ww#�!REE ��wwH2= +,�ww� >�?ww3 �,�&8�ww,� N!&ww�! �� ��)ww2_ Gww1&8� �wwB ")ww3]��[<&ww#�!REE�ww4 7�ww2B/_ �8�ww$�]��[�1! ")3 "�!� ����� <!/B.

'�(* -��.�� '�(* -��.�� _ ��4$,' ��4$, -��.��''.8�� ��4$, -��.�''.����

'4�*� W��4$,

Dow

nloa

ded

from

ijcm

.ir a

t 6:1

6 +

0430

on

Sun

day

June

7th

202

0

Page 11: Mineralogy, geochemistry and genesis of carbonate …ijcm.ir/article-1-570-fa.pdfMineralogy, geochemistry and genesis of carbonate silica serpentines (listwaenite) in north of Nain

)'Xpq"��?3 �r@,�9 �prss ���5 J,*$4 �#�&#U . �?,3 +,�- ��1�23. . .l�o

�H�X<&#�!REE �,�&8�w,� N!&w�!�+2w� �w� . �&w',4 -! ���wg& :8w1&9 Pw,_/4 �wB ")w3 ��wH2= ]�l.[<&w#�!REE �w4 7�w2B/_ �8�w$�]��[�1! ")3 "�!� ����� <!/B.

REE �&8�,� !/#?= �,Sw_ +,�w� >�?w3 �4�w2B/_ <�w= . )w�!<&ww#�!REE�C �� 7�ww2B/_ <&ww#�! �wwB �,;ww3 �ww',A �ww= <�ww=�ww4 �ww1! �8�ww$� .�,�&8�ww,� <�ww,F! G,wwE� Jww,�� �wwB

�!@,� �4�2B/_Eu �,�&8�w,� -! �8w1� +w! �� �wB �;�w� �w= �w1! ")w3 �w2Q �,�&8�w,� /#� N!&�! .G,wE� �� JwB��� ��

�,�&8�ww,� ��$ww��_! ��ww,',1 <�ww= �!@ww,�Eu e=�ww_ �ww�)wwB� .<��wwH2�B�� �!@ww,� /ww#� <&ww1 -!Eu :8,ww1�0& �wwB

CO2��!� S,�8�ww� �;�ww� .�,�&8�ww,� �� �ww_ �4�ww2B/_ <�ww= �!.!/ww /��ww�� <!�!�CO2�)28�ww= Eu �ww;v� <��wwH2�B�� �ww� ��$ww� </4))ww3)ww=� .�,�&8�ww,� �� �ww_ ���wwF �� <�ww=

+,�ww9 <!�!� �ww_ ��ww,',1 �!@ww,� +/ww4CO2�)28�ww= Eu �� e=�_)B�.

Y�4 i/w3 +)wB +,�w� >�?w3 �,�&8�w,� J,^$w4 �� /D&� J�!&(

�1!:>�w6 �A�w1 +,�- :\2w1 ��/,#�wX ]w_ �w,��!/8�! <�w=

<�!/wwg/B <�8ww1!� �� �0��&wwA J�ww0 �C �ww9 �� . L&��ww,g! <-�8w1.@! >��w64]<��$w Sw=[Pw1�2� <��8A�w1 G!/w3 ��&w#BC �&�� <!/B /w !� -�w1 �,�&8�w,� <�w= �w1! "�/w5 S=! .

@,#�wX -! Ow9 �w_ <��,w3/4 �$w$_ -�w +w! /wB ".b(�2�#8�ww^3 ��wwH! P;ww1 ��!� f� <@ww_/� �!/ww! �� �ww,�&,!-

�.- �w,��6 )w)H4 � . ))X <�= J�w0 <�w= �&wX&� <�w= �1! ")3 .S8�w,1 <��wH� �!&w2( �wB �#8�w*3 . -�� <�w=

�&#BC �&�� :,�.! �w� Jw?( -�w1 �,�&8�w,� <�w= w . )w225 Y�w� ��?w3 �wB �,�&8�w,� J,*$w4 <!/wB %-W . �w,�.! �&85�-

)ww�.� .�ww� ��$ww� �!/Eww 7!)=�$ww� ���ww1/0� �ww5 )ww2=� �8��w1 +)w2U -! �8,�&8�,� t�� "� �w4 /w8� -! ���wA /w8� �w=

>/825 {/8�w0 ")w�/,0/B�� \2w1 �.�� �wB <��8A�w1 <�w=�� )wB� .. J�w0 �"-�� <�=��8A�w1 �&wX. /wB ".bw( +!/B�w2B

ww*3 �,�&8�ww,� J,*$ww4 �� </ww#� /D&ww� Jww�!&( ��#8�)��!� e�� .

/D&www� <�www�� :�www,��6 -! )www6B �wwwB �8�wwwB!. +www��C <�www= �ww,�&,! �2@,#�wwX)�ww,��6 <��,ww3/4 S�ww,4�?0�� <�ww= (

e!@ww! `ww(�B <@ww5/� �!/ww! ���wwX��+,ww�- ��ww�/0 %/ww0 �}C �)www3 e!@www! �wwwH,8� �� . <�&www�� . �Ejwww1 <�www=

�C �ww,�bF �ww,'B�gww=�ww1! ")ww3 �.S�ww,4�?0�� eww�� !tww� ��ww�/0 �&ww4&� �!&ww2( �wwB �,�&8�ww,� J,*$ww4 �� +ww1&d!

��!� �,?=! ��,�B.�&ww#BC �ww,=�� �,�&8�ww,� <�ww=-�ww1 :�&ww#BC <!-�ww1 <�ww=

<!�!� ��,�&8�ww,�XCO2)28�ww= W�wwB <.�ww8�0 �ww*��2U `ww(�B <@ww_/� �!/ww! �� +ww1&d! ��ww?0�� �ww,��6 �)ww3

e!@! ��w�/0 +,w�- �X�� �w1! ")w3 .���w?8F! "�#8w1�ACO2�ww� !� �ww3�� Z��ww3 �� ")ww3 JwwF ��ww?0�� +B/ww_ �!&ww4

��ww�!� +ww��C �ww,��6 -! .-! �ww2Q Z��ww3CO2/,D�ww4 �wwE4 �ww,'B�g . ")ww3 %/ww0 ��w?(! �� <��ww- ��ww�/0 +,ww�- <[/w�! . �=),��&www1 ��=)www/'_ . �www8� W�wwwB �C �0)www225 JwwwF

ww' . S@ww,2� �S,�ww'_ �wwB "!/ww?= !� �=),2ww1�C �B�ww,?_ 7!@ /ww,u�Ag ,Hg ,As ,Sb ,Ni ,Cr....\2ww1 -! <.�wwF <�ww=

�.- �www/R -! . �8�www3 /www �2( +www! . �$www'�0 <�www= �w1! "�/w5 Jw?F ��$w Sw_ i&jw1 �B �&A �B �#8�^3 .�wB

�,4.)www/9 �www_ +www! �wwwB �wwwX&4 . "),2,8��9/www1 <�www=�,2,8��9/ww1"/8�ww0 SwwHF �ww=\2ww1 -! <! �ww,�&,! �� !� �ww=

,^$ww4 +,�ww� >�?ww3"�!� J\2ww1 +ww! . )ww�! �/wwA ��,�wwB �ww=�&ww#BC �&ww�� <!/wwB �;ww1�2� ��ww^� �)2��ww1/0� . ")ww3 �wwB �ww=

�� ��?3)�.� .

'�(* -��.�� '�(* -��.�� _ ��4$,' ��4$, -��.��''.8��

.� ��4$, -��''.���� '4�*� W��4$,

Dow

nloa

ded

from

ijcm

.ir a

t 6:1

6 +

0430

on

Sun

day

June

7th

202

0

Page 12: Mineralogy, geochemistry and genesis of carbonate …ijcm.ir/article-1-570-fa.pdfMineralogy, geochemistry and genesis of carbonate silica serpentines (listwaenite) in north of Nain

�<),61 "/�� ��8Fb�!/�g ��','A ���,�&9 �!/! �1�23 ���5 . �1�23�&'B �'H� l��

�H�Z�)3 �8,�&8�,� )2!/ <�!�&?� J^3 ]��.[

�ww@X ��$ww . �ww�� e=�ww_ �wwBCO2�0)�&ww3 JwwF �ww,'B�g �

�w� e!@! S,�'_ )wB� .�w�!/5 G!/w3 +w! �� 7�w2B/_ <�w=-

�w� JwF �= ��.)�w'_ . @4�!&w_ 7�&w �wB O,',w1 . )�&w3�C +,$ww��X�ww� �ww=�&ww3 ."/ww@X �ww�B Pww,4/4 +)wwB �� <!

���ww5 �ww� J^ww3 7�ww2B/5 <�ww=�/ww,0 .�&ww#BC </,A�ww4 <�ww= <.�wwFCO2.SiO2�ww0� 7�&ww �wwB /ww#� /ww �2( .�<!

�#8�ww^3 �ww� /ww9 !� \2ww1 �� �&wwX&� <�ww=)ww22_ .J*ww3 �8,�&8�ww,� )ww2!/ <�!�&ww?� �)ww3]��[J^ww3 ��m")ww�C

�1!.

-�� $4 �,2,8��9/ww1 eww�B �wwA/B �� +,�ww� >�?ww3 <�ww= �wwE4 �ww=

�&www#BC /,D�www4 <.�wwwF <�www=CO2�SiO2/www �2( .Ca2+�Mg2+.…")ww3 J)ww;4 �,�&8�ww,� �wwB)ww�! .�ww1�/B /B�ww2B-

��9&^ww1./^,� . �!/Eww <�ww=�,�&8�ww,� >�?ww3 <�ww=

�ww�,�wwB +N!&ww�! �4�ww2B/_ ��4�ww2B/_���ww,',1 .��ww,',1 �ww� S,�ww�4)�&ww3.�,�&8�ww,� �4�ww2B/_ <�ww=–��ww,',1

+,�ww� >�?ww3 �� �,�&8�ww,� N&ww� +/ww4 �!.!/ww)ww�! .�&wwR �wwB �,�&8�w,� :w?= �'_ ���w� /w �2( -! �w?_ /��w�� J��w3 �w=

�wB �;�w� /w �2( +w! Z)w3 ��wH2�B <&w#�! . )28�w= �_�A

�w1! �j�w� ��w;/�4 ��)2_ .�,�&8�w,� �0)w3 �w�4 -! �w=

REE }.� :wwX�� �wwB �8,4.)ww/9 �ww,�&4./9 Z)ww2=� ��$ww�

�www1W�B �$www�B .+,www�- >/www82_ . >�www6 �8A�www1 <�www=�&ww#BC >�ww�8�! <!/wwB Pww1�2� <��8A�ww1�,�&8�ww,� <�ww= �-�ww1

�w�j2� /8A�wB �� +w1&d! S�w,4�?0�� -! �w3�� <�w�� e!@!

�ww� !� /wwu� �� �,�&8�ww,� J,^$ww4 �� /D&ww� Jww�!&( -! �!&ww4�wwww3!� ."�#8wwww1�ACO2W <e2wwww_!. <!/wwwwB %-<�wwww=

�ww� !� �)ww3 �8,�&8�ww,� �&ww#BC �!&ww4 ��ww?0�� <�ww=–���!� ��&k8�.

'�� ��B �� 7)(��ww� <!/wwB ����ww ! "�#$ww�!� �ww',?*4 7b,�wwE4 -!

�� ��!��)g . /*$4 ����� +! +.)4�&3.

[4��� [1] Rose G., ”Mineralogisch – geognostische Reise nach dem Ural, dem Altai und dem kaspischen Meere". Volume 2: "Reise nach dem sudlichen Urals und dem kaspischen Meere, Uebersicht der Mineralien und Gebirgsarten des Ural. Berlin, G. E. Reimer (Verlag der sanderschen Buchhandlung)", XV plus 606p and paltes I-V. (1873).

Cr Ni Mg

Ca Co2Si H2OMg

Dow

nloa

ded

from

ijcm

.ir a

t 6:1

6 +

0430

on

Sun

day

June

7th

202

0

Page 13: Mineralogy, geochemistry and genesis of carbonate …ijcm.ir/article-1-570-fa.pdfMineralogy, geochemistry and genesis of carbonate silica serpentines (listwaenite) in north of Nain

)'Xpq"��?3 �r@,�9 �prss ���5 J,*$4 �#�&#U . �?,3 +,�- ��1�23. . .l��

[2] Buisson G., M. Leblanc, "Gold in carbonatized ultramafic rocks from ophiolite complexes",Economic Geology, 80, (1983) 2026-2029.[3] Henderson F. B., “Hydrothermal alteration and ore deposition in serpentinite- type mercury deposites”, Economic Geology, 64(1969) 489-499. [4] Davoudzadeh M., “Geology and Petrography of the area north of Nain Central Iran”,Geological Survey of Iran, Report No.14. (1972) 89p.

]o[N <��;X.�"+,�-�,�&,! <[&�./89 . �1�23 >�?3 <�=+,d��"���� ���9 ����� ! "�#$�!� �)3�! �1�23��5 <�)����(����E� .

]�[{ </�U&2�.�"�,�&,! <[&�./89 . �!/0./89 �1�/B <�=+,d�� >�?3"���9 ��8$�B ),�3 "�#$�!� �)3�! �1�23��5 ����

�!/�4�)���� (�m��E� .

]�[�!/�g�&9%.�"�� �)3 �8,�&8�,� <�=)2!/ <[&�./89+,�� >�?3 a�b� �,�&,!"���9 ����:3��_ "�#$�!� �)3�! �1�2

�S'6� �,B/4)���� (�ol �E� ]�[x ���?F�.�"Y!� <[&�./89�E� <�= �,�&,! <!

+,��)<@5/� �!/!"(���� ���9 �"�#$�!� �)3�! �1�23��5 <���� !)����(�����E� .

]m[���� -.�"�,�!/0&[b9 <[&�./89 �6��j�\21 . �= <�=� �,�&,! �� �8�B!. +,d�)<@5/� �!/!("���� ���9 �<

����� ! "�#$�!� �)3�! �1�23��_)���o (��m�E� ..

]��[7 �2,�� �,�/,9.�"�,4.)/9 <[&�./89�83&0 <�= <+,�� �,�&,!)���� ! ��81!"(���� ���9 ��)3�! �1�23��_ <

����� ! "�#$�!�)���� (�m��E� .

]��[� "�!- �3�/,3.�"�./89\21 <[& ��&0/0� <�= +,�� �,�&,!)���� ! ��81!"(���� ���9 ��)3�! �1�23��_ <

����� ! "�#$�!�)���� (�m��E� .]��[L �8Fb.�"���5 �1�/B\21 . �1�23 �1�23

�a��.�+,�� �,�&,! �B G;4/� <�="���� ���9 ��1�23��_ <����� ! "�#$�!� �)3�!)���� (��m�E� .

]��[% <),61.�"6��j�:�,�&8�,� @�[./89 \21 �� �= <�= +,�� >�?3 Y,��!/8�!)<@5/� �!/!"(���� ���9 �<

����� ! "�#$�!� �)3�! �1�23��_)����(����E� .

]�l["/��% ��,d.% "�!- �^� �.N.{ �!/3 �.�". �!/0./89�,�&8�,� �?,3&d[�(&?H� �� �=! �8,�&,! <�=<@_/� �!/"�

���� ! "�#$�!� ��$=.a9 i/R ����9 {�!@0�)����(��

�E� .[15] Emami M. H., Sadegi M. M., Omrani S. J., “Magmatic Map of Iran", Scale 1.1,000,000, Geological Survey of Iran. (1993).

]��[�b(<��B��� L.<-!�& �%.�"$��:+,�- �1�23�:��������+,"+,�- ���-�1 �7��$8_! . �1�23��)6�-

�&$_)����([17] Aydal s., “Gold – bearing listwaenites in the Arac Massif, Kastamonu, Turkey, Terra Nova”,vol. 2 No. 1. 1990, Pp. 43-51. [18] Turekian K. K., Wedepohl K. W., "Distribution of the elements in some major units of the earths crust", Geological Society of America Bulletin, 72, (1961) 175 192. [19] Kretz R, "Symbols for rock-forming minerals", American Mineralogists, v. 68, (1983) p. 277-279. [20] Nasir S., Al Sayigh A.R., Al Harthy A., Al- Khirbash S., Al- Jaaid O., Musllam A. A., Al Mishwat A., Saidi S., Al- Bu, "Mineralogical and Geological characterization of listwaenite from the Semail ophiolite", Oman, Chemie der Erde-Geochemistry, Article in press.

]��[}&5 +�- %.i.� �2,�! �.N �B�8C �.5 ��&9 S/ %.i.�"���5-+,�- ��1�23�d!�! . ���?8A�1 �,6g&� ��?,3 <!/B �*,8�[ >)� <

�,�&8�,��!/! �.�A <�="'H� �:���5 . �1�23�&'B >�1 ��!/! �1�23

S=�@,1 ���?3Z��)���l (������� .

]��[.�" �&�2,�.�.�""�!� �/B��_��,?,3&d[ <�= :��B�-�!/,��4 �e�?�"/4 ��?X"�!- S/_ ��� �'( <�+/?D <���� �

@/;4 "�#$�!� 7!��$8�! . |�U�)���l(oo��E� .

Dow

nloa

ded

from

ijcm

.ir a

t 6:1

6 +

0430

on

Sun

day

June

7th

202

0

Page 14: Mineralogy, geochemistry and genesis of carbonate …ijcm.ir/article-1-570-fa.pdfMineralogy, geochemistry and genesis of carbonate silica serpentines (listwaenite) in north of Nain

�<),61 "/�� ��8Fb�!/�g ��','A ���,�&9 �!/! �1�23 ���5 . �1�23�&'B �'H� l��

[23] Taylor S. R., Mc Lennan S. M., "The

continental crust: its composition and evolution",Blackwell, Oxford (1985). [24] Taylor S. R., Mc Lennan S. M., "The

composition and evolutions of the continental crust: rare earth element evidence from sedimentary rocks", Phil. Trans. R. Soc., (1981) A 301381 – 399.

Dow

nloa

ded

from

ijcm

.ir a

t 6:1

6 +

0430

on

Sun

day

June

7th

202

0