GEO 2163 Study Guide - Final Guide: Chondrodite, Fayalite, Staurolite

• School: University of Ottawa
• Department: Geology
• Course: GEO 2163
• Professor: Moisil Ingrid

Document Summary

[ca3(al3+,fe3+,cr3+,ti4+,v3+,zr3+)2si3o12: pyralspite garnets (orange, red, purple, pyrope: purple. Mn3al2(sio4)3: ugrandite garnets (green, brown, black, grossular: green. Ca3cr2(sio4)3: how are the garnets further subdivided, what is the basic formula for garnet, and in what crystal system does it crystallize, andalusite (stubby prisms), kyanite (columnar/parallel. It is used for rock age dating because it contains traces of u and th, which undergo radioactive decay. What do they have in common: zoisiteca2al3o(si2o7)(oh, clinozoisite ca2al3o(si2o7)(oh, epidote, allanite, piemontite, they are all bladed or prismatic orthorhombic monoclinic monoclinic. Hornblende tends to form elongate rectangular crystals whereas augite crystals tend to be blocky. What are the dominant alkali elements in their formula: muscovite (k), paragonite (na), margarite (ca), annite (k, fe), Name two things: they are piezoelectric and hexagonal, sketch the ternary diagram for feldspars, label the three corners and show the limited and unlimited solid solution series.