Igneous, Sedimentary, Metamorphic, And Mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Weathered schist or gneiss fragment

Quartz–feldspar–mica metamorphic rock; likely mica schist or gneiss

Clear Quartz

Silicon Dioxide (SiO2)

Gneiss and Igneous Rock Collection

Foliated Metamorphic Rock (Gneiss) / Igneous Rocks

Mixed Tumbled Rocks and Minerals Collection

Mixed Minerals and Rocks (Quartz, Feldspar, Jasper, Agate, Lapis Lazuli, Sodalite, Rose Quartz, Fluorite, etc.)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Pink Feldspar

Potassium Feldspar (Microcline or Orthoclase), KAlSi3O8

Orange Calcite

Calcium Carbonate (CaCO3)

Quartz (Milky/Crystalline variety)

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Hematite

Hematite (Α-Fe2O3)

Quartz

Silicon Dioxide (SiO2)

Quartz Fragment

Silicon Dioxide (SiO2)

Quartz

Silicon dioxide (SiO2)

Quartz Crystal

Silicon Dioxide (SiO2)

Gneiss

Foliated Metamorphic Rock

Garnet (specifically Almandine)

Almandine - Fe3Al2(SiO4)3

Gneiss

Gneiss

Magnetite

Magnetite (Fe3O4)

Clear Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Foliated Metamorphic Rock (likely Gneiss or Schist)

Gneissic Metamorphic Rock

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Specular Hematite (Specularite)

Iron(III) oxide (Fe2O3)

Quartz (Tumbled)

Silicon Dioxide (SiO2)

Quartz (Small Fragment)

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Citrine and Quartz

Silicon Dioxide (SiO2)

Yellow Calcite

Calcium Carbonate (CaCO3)

Hematite

Iron (III) oxide (Fe2O3)

Pyrite

Iron Disulfide (FeS2)