100+ Garnets PowerPoint (PPT) Presentations, Garnets PPTs

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Kimberlite, Carbonatite and Lamproite

Kimberlite, Carbonatite and Lamproite. Carbonatite : a carbonate rock of apparent magmatic origin, generally associated with kimberlite and alkline rocks. They have been variously explained as derived from magmatic melt, solid flow, hydrothermal solution, and gaseous transfer. A

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2.34k views • 70 slides

BIRTHSTONES January - December

BIRTHSTONES January - December. Garnet Mg 3 Al 2 Si 3 O 12. Hardness 6.5-8.5 (most are 7-7.5) Garnets are the official January birthstone.

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660 views • 41 slides

Subduction Zone and High Pressure Rocks

Subduction Zone and High Pressure Rocks. Granulite Facies. High T, P Base of Crust T > 700 C Very anhydrous Dry conditions inhibit melting. About 600 C. About 680 C. About 700 C. About 750 C. Subduction Zone Rocks. Steinmann Trinity (1905). Serpentinite Pillow Basalt

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585 views • 29 slides

Garnets

Garnets. A 3 2+ B 2 3+ (SiO 4 ) 3. B = Al: Pyralspite garnets . Mg 3 Al 2 (SiO 4 ) 3 : Pyrope Fe 3 Al 2 (SiO 4 ) 3 : Almandine Mn 3 Al 2 (SiO 4 ) 3 : Spessartite. A = Ca: Ugrandite garnets. Ca 3 Cr 2 (SiO 4 ) 3 : Uvarovite Ca 3 Al 2 (SiO 4 ) 3 : Grossularite

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354 views • 21 slides

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Garnets - PowerPoint PPT Presentation

Kimberlite, Carbonatite and Lamproite

BIRTHSTONES January - December

Subduction Zone and High Pressure Rocks

Garnets