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Category Carbonate mineral Chemical formula CaCO3 Crystal symmetry Trigonal Color Colorless or white, also gray, yellow, green,

Feldspar group potassium feldspar- Sodium feldspar-sodium potassium feldspar General potassium feldspar

Sand is a naturally occurring granular material composed of finely divided rock and mineral particles. The composition of sand is highly variable, dep

Category Silicate mineral Chemical Silica SiO2 Crystal symmetry Trigonal Identification Color From colorless to black, through va

General Category Sulfate minerals Chemical formula CaSO42H2O Identification Color Colorless to white; may be yellow, tan, blue, pink,

General Category Carbonate mineral Chemical formula (CaMg)(CO3)2 Crystal symmetry Trigonal rhombohedral,

General Category Silicate mineral Chemical formula Mg3Si4O10(OH)2 Crystal symmetry Either monoclinic or triclinic

General Category Silicate mineral Chemical formula Al2Si2O5(OH)4 Crystal symmetry Triclinic pedial Identification Color White, sometimes

Category Phyllosilicate Chemical formula (Mg, Fe, Al)3(Al, Si)4O10(OH)24H2O Identification Color Colorless, white, yellow, green, brown Cryst

General Category Sulfate mineral, barite group Chemical formula BaSO4 Crystal symmetry Orthorhombic Identification Color Colorless, w