lab11 - 2 O 6 Monoclinic f, g, g, g Amphiboles...

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GY 302: Crystallography and Mineralogy Lab 11: Classes VIII: Silicates 3: Inosilicates Drawers 11/12 Your task today : This is the list of minerals that you will be responsible for the next lab. Warning: you are probably not going to like these minerals all that much. While some are pretty simple to identify (e.g., rhodenite, spodumene), most are not. They exhibit considerable variety of characteristics which unfortunately overlap. Many are green. Mineral Formula System Specimen Quality Pyroxenes Enstatite/Bronzite MgSiO 3 - (Mg, Fe)SiO 3 Orthorhombic g, g Ferrosilite FeSiO 3 Orthorhombic f Hypersthene (Mg, Fe)SiO 3 Orthorhombic f,f Aegirine NaFeSi 2 O 6 Monoclinic f, g, g Augite (Ca,Na)(Mg,Fe,Al)(Si,Al) 2 O 6 Monoclinic p, f, g(x6) Diopside CaMgSi 2 O 6 Monoclinic g(x6) Hedenbergite CaFeSi 2 O 6 Monoclinic g, g Jadeite NaAlSi 2 O 6 Monoclinic f,g,g Spodumene LiAlSi
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Unformatted text preview: 2 O 6 Monoclinic f, g, g, g Amphiboles Anthophyllite-Gedrite (Mg,Fe) 7 Si 8 O 22 (OH) 2 Orthorhombic f, f, g(x4) Actinolite Ca 2 (Mg,Fe 2+ ) 5 Si 8 O 22 (OH) 2 Monoclinic g (x4) Cummingtonite (Mg) 7 Si 8 O 22 (OH) 2 Monoclinic p, f, g Glaucophane Na 2 Mg 3 Al 2 Si 8 O 22 (OH) 2 Monoclinic f (x3), g(x4) Grunerite (Fe 2+ ) 7 Si 8 O 22 (OH) 2 Monoclinic g, g Hornblende (Ca,Na,K) 2-3 (Mg,Fe,Al) 5 Si 6 (Si,Al) 2 O 22 (OH) 2 Monoclinic f,f, g(x5) Riebekite Na 2 Fe 3 Fe 2 Si 8 O 22 (OH) 2 Monoclinic p, g Tremolite Ca 2 Mg 5 Si 8 O 22 (OH) 2 Monoclinic f, g, g Others Pyroxenoids and others Howlite Ca 2 B 5 SiO 9 (OH) Monoclinic g Pectolite NaCa 2 Si 3 O 8 (OH) Triclinic g(x3) Rhodonite Mn(Fe 2+ ,Mg,Ca)SiO 3 Triclinic f,g(x4) Wollastonite CaSiO 3 Triclinic f, g(x5) Next Tuesday (1:00-1:20 PM): Mineral lab quiz 6 ( (Inosilicates)....
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