Igneous, Sedimentary, And Metamorphic

Yellow Calcite

Calcium Carbonate (CaCO3)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Clear/Crystalline)

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz (Smoky/Rock Crystal)

Silicon Dioxide (SiO2)

Hematite

Iron (III) Oxide (Fe2O3)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Pebble

Crystalline Silicon Dioxide (SiO2)

Clear Quartz Crystal

Quartz (Silicon Dioxide, SiO2)

Quartz

Silicon Dioxide (SiO2)

Blue Apatite

Apatite, Ca5(PO4)3(F,Cl,OH)

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

Quartz (Citrine or Iron-Stained)

Silicon Dioxide (SiO2)

Green Calcite

Calcium Carbonate (CaCO3)

Clear Quartz

Silicon Dioxide (SiO2)

Pyrite

Iron Sulfide (FeS2)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Milky Quartz (Ferruginous variety)

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz (Clear or Cloudy)

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Pyrite

Iron Sulfide (FeS2)

Quartz

Silicon Dioxide (SiO2)

Quartz (Gray/Smoky Varieties)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Gneiss

Metamorphic Foliated Gneiss

Gneiss

Gneiss (Metamorphic Rock)

Banded Gneiss

Gneiss (Metamorphic Rock)

Foliated Metamorphic Rock (likely Gneiss or Schist)

Gneissic Metamorphic Rock

Fuchsite (Green Muscovite / Mica Schist)

Chromian Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)

Gneiss

Gneiss (High-grade metamorphic rock)

Labradorite (a variety of Feldspar)

Labradorite; (Na,Ca)(Al,Si)4O8 (a plagioclase feldspar)

Gneiss and Igneous Rock Collection

Foliated Metamorphic Rock (Gneiss) / Igneous Rocks

Kaolinite (Kaolin)

Kaolinite (Al2Si2O5(OH)4)

Magnetite (Lodestone)

Iron(II,III) oxide (Fe3O4)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Agate

Silicon Dioxide (Chalcedony), SiO2

Quartz

Silicon Dioxide (SiO2)