Mixed (Sedimentary, Igneous, And Metamorphic)

Massive White Quartz

Silicon Dioxide (SiO2)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Quartz (Milky or Yellow variety)

Silicon Dioxide (SiO2)

Yellow Calcite

Calcite (Calcium Carbonate, CaCO3)

Hematite

Iron(III) oxide (Fe2O3)

Magnetite

Iron(II,III) oxide (Fe3O4)

Muscovite

KAl2(AlSi3O10)(OH)2

Chrysocolla in Quartz

Hydrated copper phyllosilicate with silicon dioxide (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O + SiO2)

Chrysocolla

Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O

Gneiss

Metamorphic Gneiss

Quartz

Silicon Dioxide (SiO2)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Quartz pebble

Silicon dioxide (SiO2)

Pyrite

Iron Pyrite (FeS₂)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

White Quartz (Milky Quartz)

Quartz (Silicon Dioxide - SiO2)

Quartz pebble

Silicon dioxide (SiO2)

Tonsil Stone (Tonsillolith)

Calcium phosphate / Calcium carbonate biomineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Amethyst variety)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Crystal

Silicon Dioxide (SiO2)

Quartz Pebble

Quartz (SiO2)

Quartz River Rock

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

White Quartz

Silicon Dioxide (SiO2)

Quartz Mineral

Silicon Dioxide (SiO2)

Feldspar

Triclinic or Monoclinic Tectosilicate (e.g., KAlSi3O8)

Quartz

Silicon Dioxide (SiO2)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Clear Quartz Point

Silicon Dioxide (SiO2)

Quartz (Small Fragment)

Silicon Dioxide (SiO2)

Smoky Quartz

Silicon dioxide (SiO2)

Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz/White Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)