Garnet
Garnet Group (Silicate Minerals), formula varies e.g., Almandine Fe3Al2(SiO4)3
Category
Browse mineral like industrial smelting waste specimens identified by the Rock Identifier community.
Garnet
Garnet Group (Silicate Minerals), formula varies e.g., Almandine Fe3Al2(SiO4)3
Sandstone (Banded)
Clastic Sedimentary Rock (composed of SiO2, CaCO3, or Fe2O3 cement)
Sandstone with Foliose Lichen
Arenite (Rock matrix) with Xanthoparmelia or Flavoparmelia (Lichen genus)
Greywacke (River Pebble)
Greywacke sandstone with quartz veining
Polished ocean jasper / orbicular jasper (probable)
Silica-rich chalcedony (microcrystalline quartz, SiO₂) with iron oxides and altered volcanic inclusions
Fluorite
Calcium fluoride (CaF2)
Diamond
Diamond (C)
Black Sand (Magnetite/Heavy Mineral Concentrate)
Magnetite-rich Placers (Fe3O4)
Peridot
Olivine (Mg, Fe)2SiO4
Schist
Mica Schist (Quartz-Muscovite-Biotite Schist)
Orange Calcite (often commercially sold as Honey Calcite or Aragonite)
Calcium Carbonate (CaCO3)
Epidote
{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Polished brown jasper (probable picture jasper)
Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide inclusions
Quartz Pebble (Chalcedony/Agate)
Silicon Dioxide (SiO2)
Chalcedony (Moonstone variant or White Agate)
Silicon Dioxide (SiO₂)
Garnet (Almandine)
Almandine Fe3Al2(SiO4)3
Tumbled Stone Collection (featuring Tiger's Eye, Rose Quartz, and Moss Agate)
Mixed Silicates and Oxides (predominantly SiO2 group minerals)
Granitic Pegmatite
Granite Pegmatite (typically containing Quartz SiO2, Feldspar KAlSi3O8, and Muscovite)
Schist
Schist (Crystalline Metamorphic Rock)
Greenstone / Graywacke
Lithic Sandstone (Graywacke)
Garnet (Tumbled)
Almandine / Pyrope Garnet (Fe3Al2(SiO4)3 to Mg3Al2(SiO4)3)
Barite Rose
Barium Sulfate (BaSO4)
Druzy quartz geode
Quartz, silicon dioxide (SiO₂), microcrystalline druzy coating
Botryoidal Chalcedony
Silicon Dioxide (SiO2)
Black Tourmaline (Schorl)
Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)3OH)
Magnetite
Magnetite (Fe3O4)
Beryl (Aquamarine variety)
Beryllium Aluminum Cyclosilicate (Be3Al2Si6O18)
Polished banded stone, likely zebra jasper
Zebra jasper (banded microcrystalline quartz, chiefly SiO₂, with iron-oxide and carbonate impurities)
Greenschist
Greenschist (Chlorite-actinolite schist)
Garnet (Almandine-Pyrope)
Almandine-Pyrope Mg3Al2(SiO4)3 to Fe3Al2(SiO4)3
Sandstone (Pebble)
Sandstone (SiO2 with iron oxide impurities)
Pegmatite
Granitic Pegmatite
Chalcedony (Agate)
Silicon Dioxide (SiO2)
Pink Himalayan Salt Rock (Halite)
Halite (Sodium Chloride, NaCl)
Sandstone (Quartzose Sandstone)
Clastic Sedimentary Rock - Arenite
Tumbled pale brown stone, possibly petrified wood or chalcedony
Indeterminate from image; likely microcrystalline quartz (SiO₂) or silicified wood
Smoky Quartz (with inclusions)
Silicon Dioxide (SiO2)
Red Garnet (likely Almandine)
Almandine (Fe3Al2(SiO4)3)
Mica Schist
Metamorphic rock dominated by micas (muscovite, biotite)
Rough Blue Sapphire
Corundum (Al2O3)
Silver (Native Element / Alloy)
Silver (Ag)
Rough White Zircon
Zircon (Zirconium Silicate, ZrSiO4)