Igneous, Sedimentary, Metamorphic, And Mineral

Quartz (Granular)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Citrine

SiO2 (Silicon Dioxide)

Green Quartz (Prasiolite/Adventurine)

Silicon Dioxide (SiO2) with inclusions

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Quartz Crystal Fragment

Silicon Dioxide (SiO2)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Nephrite Jade

Nephrite

Quartz (Milky/Common Quartz)

Silicon Dioxide (SiO2)

Magnetite (potentially Hematite-rich)

Magnetite (Fe3O4)

Specular Hematite

Hematite (Fe2O3)

Epidote

Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Pyrite

Iron Pyrite (FeS₂)

Blue Calcite

Calcium Carbonate (CaCO3)

Pyrite

Iron Sulfide (FeS2)

Yellow Calcite

Calcium Carbonate (CaCO3)

Pyrite

Iron Sulfide (FeS2)

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Apatite

Fluorapatite, Chlorapatite, and Hydroxylapatite (Ca5(PO4)3(F,Cl,OH))

Magnetite / Hematite mix (Iron Ore)

Fe3O4 (Magnetite) / Fe2O3 (Hematite)

Pyrite

Iron Sulfide (FeS2)

White Quartz (Milky Quartz)

Quartz (Silicon Dioxide - SiO2)

Quartz (Drusy/Crystalline)

Silicon Dioxide (SiO2)

Pyrite

Iron Sulfide (FeS2)

Milky Quartz in Matrix

Silicon Dioxide (SiO2)

Magnetite

Magnetite (Iron(II,III) oxide, Fe3O4)

Graphite

Graphite (C)

Calcite

Calcium Carbonate (CaCO3)

Orange Calcite

Calcium Carbonate (CaCO3)

Magnetite (Iron Ore)

Magnetite (Fe3O4)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Greenschist

Chlorite Schist

Pyrite

Iron Sulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

Magnetite

Magnetite (Fe3O4)

Quartz (Milky or Yellow variety)

Silicon Dioxide (SiO2)

Educational Geologic Collection

Mixed Mineral and Rock Collection (Various compositions)

Pyrite

Iron Sulfide (FeS2)

Pyrite in Quartzite/Graphite Matrix

Iron Sulfide (FeS2)