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Tzankova N. 2017. Analysis of beads from feature 73A.- In: Sarnevo. Pits from the Late Neolithic, the Early and Late Iron Age, and the Roman Period. Volume 1. The Late Neolithic pit field, National Institute of Archaeology and Museum BAS, Edited by K. Bacvarov, M. Tonkova and G. Katsarov, 565-570 (in Bulgarian with English abstract). Цанкова Н. 2017. Анализ на мъниста от стр. 73А.- В: Сърнево. Вкопани структури от късния неолит, ранната и късната желязна епоха и римския период. Том 1, Къснонеолитното ямно поле, НАИМ-БАН, К. Бъчваров, М. Тонкова и Г. Кацаров (ред.), 565-570 (резюме на английски език). Analysis of beads from feature 73A Nikoleta Tzankova Summary. The mineral composition and gemological properties of four mineral beads have been analyzed out of a total of 47 beads deposited in feature 73A. A nondestructive approach was adopted with the use of gemological microscope, polariscope with conoscope, dichroscope, specific gravity kit, magnet and XRD analyses. The mineral artifacts were made from showcase good knowledge about and deliberate use of specific raw materials: copper ore (malachite and azurite) and serpentinite (ultrabasite). The four beads measure ca. 3 mm in diameter and less than 1 mm in thickness. A piercing tool was used to make the holes. Their perfect workmanship sheds light on the well-developed skills of the ancient masters and on the techniques they used: grinding, giving the bead a rounded convex shape, polishing, piercing of a round hole, and a possible use of a holder, which provided precise positioning.

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Page 1: Nikoleta Tzankova - gemologia.eu · Tzankova N. 2017. Analysis of beads from feature 73A.- In: Sarnevo. Pits from the Late Neolithic, the Early and Late Iron Age, and the Roman Period

Tzankova N. 2017. Analysis of beads from feature 73A.- In: Sarnevo. Pits from the Late

Neolithic, the Early and Late Iron Age, and the Roman Period. Volume 1. The Late Neolithic

pit field, National Institute of Archaeology and Museum – BAS, Edited by K. Bacvarov, M.

Tonkova and G. Katsarov, 565-570 (in Bulgarian with English abstract).

Цанкова Н. 2017. Анализ на мъниста от стр. 73А.- В: Сърнево. Вкопани структури от

късния неолит, ранната и късната желязна епоха и римския период. Том 1,

Къснонеолитното ямно поле, НАИМ-БАН, К. Бъчваров, М. Тонкова и Г. Кацаров

(ред.), 565-570 (резюме на английски език).

Analysis of beads from feature 73A

Nikoleta Tzankova

Summary. The mineral composition and gemological properties of four mineral beads have

been analyzed out of a total of 47 beads deposited in feature 73A. A nondestructive approach

was adopted with the use of gemological microscope, polariscope with conoscope,

dichroscope, specific gravity kit, magnet and XRD analyses. The mineral artifacts were made

from showcase good knowledge about and deliberate use of specific raw materials: copper

ore (malachite and azurite) and serpentinite (ultrabasite). The four beads measure ca. 3 mm

in diameter and less than 1 mm in thickness. A piercing tool was used to make the holes.

Their perfect workmanship sheds light on the well-developed skills of the ancient masters

and on the techniques they used: grinding, giving the bead a rounded convex shape,

polishing, piercing of a round hole, and a possible use of a holder, which provided precise

positioning.

Page 2: Nikoleta Tzankova - gemologia.eu · Tzankova N. 2017. Analysis of beads from feature 73A.- In: Sarnevo. Pits from the Late Neolithic, the Early and Late Iron Age, and the Roman Period
Page 3: Nikoleta Tzankova - gemologia.eu · Tzankova N. 2017. Analysis of beads from feature 73A.- In: Sarnevo. Pits from the Late Neolithic, the Early and Late Iron Age, and the Roman Period
Page 4: Nikoleta Tzankova - gemologia.eu · Tzankova N. 2017. Analysis of beads from feature 73A.- In: Sarnevo. Pits from the Late Neolithic, the Early and Late Iron Age, and the Roman Period
Page 5: Nikoleta Tzankova - gemologia.eu · Tzankova N. 2017. Analysis of beads from feature 73A.- In: Sarnevo. Pits from the Late Neolithic, the Early and Late Iron Age, and the Roman Period

Цитирана литература:

Черных, Е. Н. 1978. Горное дело и металлургия в Древнейшей Болгарии, БАН, София,

396 стр.

Ковачев, В. 1994. Медни рудни находища в България и възможностите за тяхната

експлоатация в древността. Сб. „Проблеми на най-ранната

металургия”, Тр. МГУ, 4, София, 90-119 стр.

Цанков, Ц., Л. Филипов, Н. Кацков. 1995. Обяснителна записка към Геоложка карта

на България в М 1:100000, к. л. Стара Загора. С., “Геология и

геофизика” АД, 58 с.

Цанкова Н., М. Василева. 2017. Минераложко и петрографско изследване на

малахит-съдържащи образци.- В: Сърнево. Вкопани структури

от късния неолит, ранната и късната желязна епоха и римския

период. Том 1, Къснонеолитното ямно поле, НАИМ-БАН, К.

Бъчваров, М. Тонкова и Г. Кацаров (ред.), 561-565 (резюме на

английски език).