Quartz (Rose Quartz or Jasper variety)
Silicon Dioxide (SiO2)
Category
Browse mineral and sedimentary specimens identified by the Rock Identifier community.
Quartz (Rose Quartz or Jasper variety)
Silicon Dioxide (SiO2)
Fossiliferous Sedimentary Rock
Sedimentary Rock with Invertebrate Fossil Imprint
Yellow Ocher (Iron-rich Silt/Clay)
Goethite-rich Limonite (FeO(OH)qnH2O)
Pyrite (or Arsenopyrite / Ore mineral aggregate)
FeS2 (Iron Sulfide)
Mixed Mineral Assortment (Pyrite, Kyanite, Agate, Jasper)
FeS2 (Pyrite), Al2SiO5 (Kyanite), SiO2 (Agate/Jasper)
Sandstone (Tumbled/River Pebble)
Arenite (composed primarily of SiO2)
Limonite with Quartz
Hydrated Iron Oxide Hydroxide with Silicon Dioxide (FeO(OH)·nH2O + SiO2)
Rainbow Fluorite
Fluorite (Calcium Fluoride, CaF2)
Shale
Shale (Lutite)
Sandstone Pebble
Arenite (Sandstone)
Limonite
FeO(OH)·nH2O
Limonite/Goethite (Iron Ore)
Hydrous ferric oxides (FeO(OH)·nH2O)
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide mixture)
Yellow Chalcedony / Carnelian
Silicon Dioxide (SiO2)
Fluorite
Calcium Fluoride (CaF2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
Sandstone (Ferruginous)
Arenite (with Iron Oxide cement)
Fossilized Fish (Lepidotes)
Lepidotes sp. (Order: Lepisosteiformes)
Red Jasper and Hematite
Silicon Dioxide (SiO2) and Iron Oxide (Fe2O3)
Fluorite, Turquoise, and Calcite set
Calcium Fluoride (CaF2), Hydrous Phosphate of Copper and Aluminum (CuAl6(PO4)4(OH)8·4H2O), Calcium Carbonate (CaCO3)
Orange Calcite
Calcium Carbonate (CaCO3)
Manganese Ore (Psilomelane/Pyrolusite)
Psilomelane ((Ba,H2O)2Mn5O10) and Pyrolusite (MnO2)
Hematite
Iron Oxide (Fe2O3)
Sandstone
Arenite (SiO2 primarily)
Limonite (Ironstone Concretion)
Hydrous ferric oxides (FeO(OH)·nH2O)
Limonite
FeO(OH)·nH2O
Quartz Mineral
Silicon Dioxide (SiO2)
Quartz Geode with Calcite
Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3)
Sandstone
Arenite (SiO2 based)
Banded Sedimentary Rock (Siltstone/Mudstone with concretion)
Siltstone with Ferruginous Banding
Fluorite
Calcium Fluoride (CaF2)
Shale
Sedimentary rock composed of clay minerals and quartz
Shale (or Mudstone)
Clay mineral aggregate / Fine-grained siliciclastic sedimentary rock
Hematite
Iron(III) oxide (Fe2O3)
Hematite
Hematite (Iron(III) oxide, Fe2O3)
Geode (Calcite or Quartz)
Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)
Blue Chalcedony
Silicon Dioxide (SiO2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Quartz-veined Limestone
Sedimentary limestone with quartz/calcite veinlets
Celestite
Celestine (SrSO4)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)