Sandstone (likely Arkosic or Lithic Sandstone)
Arenite (SiO2 based with mineral inclusions)
Category
Browse mineral specimens identified by the Rock Identifier community.
Sandstone (likely Arkosic or Lithic Sandstone)
Arenite (SiO2 based with mineral inclusions)
Sandstone (Red Sandstone / River Stone)
Arenite (composed primarily of Quartz, SiO2, with Iron Oxide cementation)
Wishing Stone (Basalt/Siltstone with Quartz/Calcite vein)
Carbonaceous Siltstone with Quartz (SiO2) or Calcite (CaCO3) vein
Sandstone with Manganese Oxide Patina
Clastic Sedimentary Rock (primarily SiO2)
Rainbow Fluorite
Fluorite (Calcium Fluoride, CaF2)
Rough Green Fluorite
Fluorite (Calcium Fluoride - CaF2)
Green Fluorite
Fluorite (Calcium Fluoride - CaF2)
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
Sapphire (Raw/Rough)
Corundum (Al2O3)
Wallboard/Drywall (Gypsum-based)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
Red Sandstone
Arenite (Ferruginous Sandstone)
Schist
Mica Schist
Chrysocolla
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Hydrated Copper Phyllosilicate)
Sandstone
Arenite (Siliclastic sedimentary rock)
Fossilized Shark Tooth (Basal Bone)
Otodus sp. (Mineralized Hydroxyapatite)
Quartzite with Glauconitic or Iron staining
Quartzite (SiO2 with accessory minerals)
Pink Granite
Phaneritic Felsic Igneous Rock (Granite)
Basalt with Quartz Vein
Mafic volcanic rock with hydrothermal SiO2 filling
Botryoidal Hematite (Iron Stone Conglomerate)
Hematite (Fe2O3) in sedimentary matrix
Green Chalcedony
Silicon Dioxide (SiO2) with trace minerals
Included Quartz Beads (likely Phantom Quartz or Garden Quartz)
Quartz (SiO2) with various mineral inclusions
Bicolor Quartz Pebble
Silicon Dioxide (SiO2) with mineral inclusions
Schist
Mica Schist
Dendritic Agate
Silicon Dioxide with Manganese/Iron oxide inclusions (SiO2)
Magnetite (Lodestone variety)
Magnetite (Iron(II,III) oxide, Fe3O4)
Amazonite
Potassium Feldspar (KAlSi3O8)
Sandstone
Arenite
Schist
Chlorite/Mica Schist
Quartz (River Pebble)
Silicon Dioxide (SiO2)
Quartz (Orangey-white variety)
Silicon Dioxide (SiO2)
Quartz (Milky or Smoky variant)
Silicon Dioxide (SiO2)
Yellow Apatite Sphere (Polished)
Fluorapatite / Ca5(PO4)3F
Garnet Schist
Almandine Garnet Schist
Quartz (River Pebble)
Silicon Dioxide (SiO2)
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz (River Pebble)
Silicon Dioxide (SiO2)
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
Rough Quartz (with potential Host Rock)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)