Geode Nodules / Agate Chert
Silicon Dioxide (SiO2)
Category
Browse sedimentary or metamorphic derived specimens identified by the Rock Identifier community.
Geode Nodules / Agate Chert
Silicon Dioxide (SiO2)
Quartz Geode (River Cobble)
Silicon Dioxide (SiO2)
Red Jasper
Quartz (Silicon Dioxide) with Hematite inclusions, SiO2
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Quartz Geode
Silicon Dioxide (SiO2)
Geode
Crystalline Quartz (SiO2) within a nodule
Magnetite (Iron Ore)
Magnetite (Fe3O4)
Garnet (Almandine variety)
Almandine Garnet (Fe3Al2(SiO4)3)
Greenschist
Chlorite schist
Garnet Schist
Almandine-Mica Schist
Jasper
Jasper (a variety of Chalcedony, SiO2)
Lapis Lazuli
Lapis Lazuli (a rock composed primarily of Lazurite (Na,Ca)₈[(S,Cl,SO₄,OH)₂|(Al₆Si₆O₂₄)], with varying amounts of Calcite, Pyrite, and Sodalite.)
Blue Quartz (potentially Dumortierite-included)
Silicon Dioxide (SiO2) with inclusions
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Kyanite (within Quartz)
Kyanite (Al2SiO5) in crystalline Quartz base (SiO2)
Zebra Jasper
Silicon Dioxide (SiO2)
Gneiss
Gneiss (High-grade metamorphic rock)
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Calcite
Calcium Carbonate (CaCO3)
Yellow Calcite
Calcium Carbonate (CaCO3)
Orange Calcite
Calcium Carbonate (CaCO3)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Pyrite
Iron Disulfide (FeS2)
Pyrite
Iron Disulfide (FeS2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Clear Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz (Milky/Rose Quartz variety)
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Specular Hematite (Iron Ore)
Iron(III) oxide (Fe2O3)
Magnetite / Iron Ore (likely Hematite-Magnetite mix)
Magnetite (Fe3O4)
Quartz (Common or Milky)
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Quartz Pebble
Silicon Dioxide (SiO2)
Clear Quartz (Tumbled)
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Potassium Feldspar
Orthoclase (KAlSi3O8)
Yellow Calcite
Calcium Carbonate (CaCO3)
Green Calcite
Calcium Carbonate (CaCO3)
Clear Quartz Crystal
Silicon Dioxide (SiO2)