An Introduction to the Rock-forming Minerals |
Contents
ORTHO AND RING SILICATES | 1 |
OLIVINE GROUP Olivine tephroiteknebelite monticellite | 7 |
ZIRCON | 13 |
Copyright | |
26 other sections not shown
Common terms and phrases
acid albite alkali feldspars Amer amounts amphibole anal analcite anorthite approximately aragonite atoms axis basalt biotite birefringence brown CaCO3 calcite calcium cations cent chemical chlorite clay minerals cleavage colour colourless in thin common composition crystals diopside Dispersion dolomite end-member extinction angle Fe+2 Fe+3 formula Geol granites green gypsum haematite hexagonal hornblende hydrothermal igneous rocks illite inter-layer iron Journ kaolinite lamellar layers leucite liquid magnetite metamorphism metamorphosed micas microcline molecules monoclinic muscovite nepheline NUMBERS OF IONS occurs octahedral olivine optic axial angle OPTICAL AND PHYSICAL orthoclase orthorhombic oxides oxygen pale PARAGENESIS parallel pegmatites PHYSICAL PROPERTIES plagioclase plane Pleochroism potassium feldspar pressure pyrite pyroxene quartz refractive indices replacement sanidine sediments silica SiO2 smectites sodium solid solution specimens sphalerite spinel structure substitution synthetic temperature tetrahedra thermal thin section triclinic tridymite twinning unit cell varieties vermiculites yellow zeolites