Manual of Mineralogy

aluminum amounts angles aragonite associated atoms axis basal blue bond brown calcite calcium carbonate cation cent chalcopyrite charcoal chemical chloride cleavage closed tube cobalt color Colorless common commonly Composition coordination copper corundum Crystal System crystalline crystallographic axes Crystallography cube deposits Diagnostic features diamond dipyramid dodecahedron electrons faces feldspar ferrous iron fibrous flame fluorite frequently fused Fusible galena gives granular gray green heated hexagonal hydrochloric acid igneous rocks intersects ionic ions Isometric limestone Luster vitreous magnesium magnetite manganese masses massive metallic metamorphic mica mineral Monoclinic Name nepheline Occurrence octahedron orthoclase Orthorhombic oxide oxygen parallel pegmatites Physical properties pinacoid potassium prism prismatic pyrite pyroxene quartz rare ratio rhombohedral silicate silver SiO2 SiO4 sodium solution specific gravity sphalerite stereogram Streak structure substitution sulfide sulfur symmetry plane Tests Tetragonal tetrahedron Transparent to translucent Triclinic twin United usually veins vertical x-ray yellow zinc