General Rock and Mineral Collection (Center: Angelite / Blue Anhydrite)
Anhydrite (Calcium Sulfate, CaSO4)
Category
Browse sedimentary (man made) specimens identified by the Rock Identifier community.
General Rock and Mineral Collection (Center: Angelite / Blue Anhydrite)
Anhydrite (Calcium Sulfate, CaSO4)
Halite (Rock Salt)
Halite (Sodium Chloride, NaCl)
Halite
Halite (Sodium Chloride, NaCl)
Clear Quartz
Silicon Dioxide (SiO2)
Clear Quartz Crystal Cluster
Silicon Dioxide (SiO2)
Sandstone (Quartz-rich)
Arenite (SiO2)
Shale or Siltstone
Sedimentary Rock (Siliciclastic)
Malachite
Malachite (Cu2CO3(OH)2)
Sandstone (with possibly iron oxides and other minerals)
Sandstone
Pink Rhodonite
Manganese Silicate (MnSiO3)
Milky Quartz (Ferruginous variety)
Silicon Dioxide (SiO2)
Flint (within Limestone matrix)
Silicon dioxide (SiO2)
Fluorite
Calcium Fluoride (CaF2)
Fluorite
Calcium Fluoride (CaF2)
White Marble
Recrystallized Calcite (CaCO3)
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
Magnetite (Iron Ore)
Magnetite (Fe3O4)
Sandstone (Quartzose Sandstone)
Arenite (SiO2 principal component)
Jasper (specifically Yellow/Red Jasper)
Silicon Dioxide (SiO2) with iron oxide inclusions
Limonite
Limonite (FeOO·nH2O)
Sandstone (Ferruginous)
Ferruginous Sandstone (SiO2 with Fe2O3)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Ferruginous Sandstone
Clastic sedimentary rock (SiO2 with Fe2O3/FeO(OH) cement)
Quartz (Common or Milky)
Silicon Dioxide (SiO2)
Pyrite
Iron Disulfide (FeS2)
Pink Satin Spar (Satin Spar Selenite Dyed)
Gypsum (CaSO4·2H2O)
Quartz Geode (with possible Manganese or Goethite coating)
Silicon Dioxide (SiO2)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Clear Quartz crystals on a Matrix base (Geode fragment)
Silicon Dioxide (SiO2)
Chert / Jasper
Microcrystalline Quartz (SiO2)
Quartzite (River Stone)
Quartzite (mainly SiO2 with iron oxide staining)
Sandstone
Arenite (composed primarily of SiO2)
Sandstone
Arenite/Quartz Arenite
Chert (Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Pink Opal
Hydrated Amorphous Silica (SiO2·nH2O)
Chert with Asphaltum (or Tar)
Silica (SiO2) with natural Bitumen/Asphaltum
Sandstone (Ferruginous)
Arenite (primarily SiO2 with iron oxide cement)
Sandstone (Ferruginous)
Arenite (with iron oxide cement, Fe2O3)
Sandstone
Arenite (SiO2 based)
Black Jasper
Jasper (Silicon Dioxide, SiO2)
Red Sandstone
Arenite (primarily composed of SiO2 with Fe2O3 cement)