Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Category
Mineral And Sedimentary
Browse mineral and sedimentary specimens identified by the Rock Identifier community.
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Quartz Geode
Crystalline Silicon Dioxide (SiO2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
mineral
Bauxite
Bauxite (principal ore of aluminum, primarily Al(OH)3)
sedimentary
Bauxite (Laterite)
Hydrated aluminum oxides (Al2O3·nH2O)
sedimentary
Blue Chalcedony
Chalcedony (Silicon Dioxide, SiO2)
mineral
Blue Chalcedony
Chalcedony (cryptocrystalline Silicon Dioxide, SiO2)
mineral
Sandstone
Arenite
sedimentary
Sandstone
Arenite
sedimentary
Sandstone (likely Conglomerate or Gritstone)
Arenite (SiO2 based)
sedimentary
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Ruby in Kyanite
Corundum in Disthene (Al2SiO5 + Al2O3)
metamorphic
Chert (Jasper/Flint variety)
Sedimentary silica (SiO2)
sedimentary
Sandstone (likely Quartzose Sandstone)
Arenite (composed primarily of SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Ironstone Concretion (Limonite/Goethite)
Ironstone (primarily FeO(OH)·nH2O)
sedimentary
Ironstone Concretion (Moqui Marble type)
Ferruginous Concretion (Fe2O3 / FeO(OH))
sedimentary
Limonite (Iron Ore)
Hydrous ferric oxides (FeO(OH)·nH2O)
sedimentary
Fluorite
Calcium Fluoride (CaF2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Pyrite in Quartzite/Graphite Matrix
Iron Sulfide (FeS2)
Mineral
Black Obsidian and Hematite
Volcanic Glass (SiO2) and Hematite (Fe2O3)
igneous and mineral
Gypsum Wallboard (Drywall)
Hydrous calcium sulfate (CaSO4·2H2O)
sedimentary (processed mineral product)
Pyrite and Chalcopyrite in Fluorite Matrix
Calcium Fluoride (CaF2) with Iron Sulfide (FeS2)
mineral
Sandstone (Ferruginous)
Clastic Sedimentary Rock (Litharenite)
sedimentary
Kyanite
Kyanite (Al2SiO5)
mineral
Pyrulite (Pyrite / Chalcopyrite)
Iron Sulfide (FeS2) or Copper Iron Sulfide (CuFeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Jasper
Silicon dioxide (SiO2)
sedimentary
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite
sedimentary