mineral names carry a certain mystique - rock names seem more utilitarian
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Mineral names carry a certain mystique - rock names seem more utilitarian. Igneous Rocks – Day 1.5. Igneous Rock Textures. A visual guide. I love rocks!. Igneous Rock Day – Brian “The Brain” . Review – Igneous Rocks. Created from a melt – recrystallize - PowerPoint PPT PresentationTRANSCRIPT
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Mineral names carry a certain mystique - rock names seem more utilitarian
Igneous Rocks – Day 1.5
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Igneous Rock TexturesA visual guide
I love rocks!
Igneous Rock Day – Brian “The Brain”
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Review – Igneous Rocks Created from a melt – recrystallize Classified based on texture and mineral
composition May be mafic or felsic As we learned from Mr. Lee,
› “Igneous rocks form when volcanoes eruptBecause when the lava finally gets cool enoughThe molten material begins to hardenAnd igneous rocks are formed, ballin’”
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Aphanetic Can’t be seen with the naked eye (crystal grains)
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Phaneritic Can be seen with the naked eye (crystal grains)
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Porphorytic Matrix aphanetic with large clusters of phaneritic
pieces
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Pegmatitic crystals of minerals larger than thumb
Big
crys
tals
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Glassy Vitreous, glossy, due to quick cool
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Amygdaloidal having infilled vesicle with another
mineral
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Vesicular Having holes
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Scoreacious Frothy rough texture with vesicles that
extend over the surface