Dana's Manual of Mineralogy

acid albite aluminum angles aragonite associated atoms axis blue bond brown calcite calcium carbonate cation cent chalcopyrite charcoal chemical Cleavage 010 closed tube Color G. H. colorless common commonly Composition coordination copper Crystal System crystalline crystallographic axes Crystallography deposits Diagnostic Features diamond dipyramid distinguished dodecahedron faces Fe² feldspar fibrous flame fluorite fused Fusible gives grains granular gray green H₂O hexagonal igneous rocks intersects ionic ions iron Isometric light limestone Luster vitreous magnesium magnetite massive metallic metamorphic mica mineral Monoclinic Name nepheline Occurrence octahedron olivine Optics orthoclase Orthorhombic oxide oxygen parallel pegmatites Physical Properties pinacoid plagioclase polarized prism pyrite pyroxene quartz rare refractive rhombohedral rotation silicates silver Similar Species SiO2 SiO4 sodium specific gravity sphalerite stereogram Streak structure substitution sulfide sulfur Tetragonal tetrahedra tetrahedron Transparent to translucent Triclinic twin United usually veins vertical x-ray yellow zinc