Igneous, Metamorphic, Sedimentary

Clear Quartz (Rock Crystal)

Crystalline Silicon Dioxide (SiO2)

Blue Apatite

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

Blue Calcite

Calcite (Calcium Carbonate, CaCO3)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz (Milky/Crystalline variety)

Silicon Dioxide (SiO2)

Quartz Mineral

Silicon Dioxide (SiO2)

Hematite

Hematite (Α-Fe2O3)

Quartz

Silicon Dioxide (SiO2)

Blue Calcite

Calcium Carbonate (CaCO3)

Educational Geologic Collection

Mixed Mineral and Rock Collection (Various compositions)

Calcite

Calcium Carbonate (CaCO3)

Quartz

Silicon dioxide (SiO2)

Quartz Fragment

Silicon Dioxide (SiO2)

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

Magnetite / Hematite mix (Iron Ore)

Fe3O4 (Magnetite) / Fe2O3 (Hematite)

Magnetite (Lodestone)

Magnetite (Fe3O4)

Dalmatian Stone

Dalmatian Jasper (a misnomer) / Perthitic Igneous Rock

Pyrite

Iron Pyrite (FeS2)

Quartz (Milky or Cloudy Quartz)

Silicon Dioxide (SiO2)

Quartz (likely a form of massive or vein quartz)

Quartz (SiO₂)

Calcite

Calcium Carbonate (CaCO3)

Green Gneiss

Metamorphic Gneiss

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Gneiss

Metamorphic Foliated Gneiss

Gneiss

Gneiss (Metamorphic Rock)

Banded Gneiss

Gneiss (Metamorphic Rock)

Foliated Metamorphic Rock (likely Gneiss or Schist)

Gneissic Metamorphic Rock

Magnetite Sand (Black Sand)

Magnetite (Fe3O4)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Pink Calcite

Calcium Carbonate (CaCO3)

Green Calcite

Calcium Carbonate (CaCO3)

Quartz (Tumbled)

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Agate

Silicon Dioxide (Chalcedony), SiO2