Gold-bearing Quartz Ore
Auriferous Quartz (SiO2 + Au)
Category
Browse mineral like industrial smelting waste specimens identified by the Rock Identifier community.
Gold-bearing Quartz Ore
Auriferous Quartz (SiO2 + Au)
Red Garnet (Almandine-Pyrope series)
Garnet Group, Almandine (Fe3Al2(SiO4)3) or Pyrope (Mg3Al2(SiO4)3)
Chalcedony (specifically Agate or Common Opal variety)
Cryptocrystalline Silica (SiO2)
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement
Chromium (Chrome)
Chromium (Cr)
Cubic Zirconia (CZ)
Zirconium dioxide (ZrO2)
Banded Agate (often called Brown Agate or Chalcedony)
Silicon Dioxide (SiO2)
Schist
Crystalline Schist (often containing Muscovite, Biotte, or Quartz)
Iron Meteorite
Iron-nickel alloy (e.g., Kamacite, Taenite)
Gold Flakes in Oil (Novelty Specimen)
Native Gold (Au)
Pink Himalayan Salt Rock (Halite)
Halite (Sodium Chloride, NaCl)
Red Sandstone
Ferruginous Sandstone (SiO2 with Fe2O3)
Almandine Garnet
Almandine, Fe3Al2(SiO4)3
Dyed Blue Agate
Silicon Dioxide (SiO2)
Yellow Calcite
Calcium Carbonate (CaCO3)
Yellow Sapphire
Corundum (Al2O3) with iron impurities
Schist
Schist (containing Quartz, Mica, and Amphibole)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Basalt with Secondary Mineralization (Likely Zeolites or Calcite)
Aphanitic mafic volcanic rock with secondary mineral inclusions (e.g., CaAl2Si3O10·3H2O for Scolecite)
Black Kyanite
Kyanite (Al2SiO5) with carbonaceous inclusions
Garnet
Almandine (Fe3Al2(SiO4)3)
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
Agate
Agate (Microcrystalline Quartz, SiO2)
Ruby in Matrix
Corundum (Al2O3)
Orange Calcite (often commercially sold as Honey Calcite or Aragonite)
Calcium Carbonate (CaCO3)
Red Garnet (likely Almandine)
Almandine (Fe3Al2(SiO4)3)
Quartz with inclusions
Silicon Dioxide (SiO2)
Dyed Magnesite (Howlite imitation)
Magnesium carbonate (MgCO3) with dye
Laterite (Iron-rich bauxite or Gossan)
Ferricrete (Fe2O3·nH2O)
Red Garnet
Almandine Garnet (Fe3Al2(SiO4)3)
Quartz Geode
Silicon Dioxide (SiO2)
Schorl (Black Tourmaline) in Matrix
Sodium Iron Aluminum Borosilicate Hydroxide (NaFe2+3Al6Si6O18(BO3)3(OH)3OH)
Nickel
Nickel (Ni)
Rough amber-like brown mineral specimen
Uncertain from photograph; possibly iron-stained quartz, common opal, or resinous amber
Sandstone (with differential weathering)
Arenite / Quartz Sandstone (SiO2)
Jasper
Silicon Dioxide (SiO2)
Garnet Schist
Garnet-bearing Mica Schist
Ruby
Corundum (Al2O3)
Quartz Pebble
Silicon Dioxide (SiO2)
Limonite (Iron Ore)
Limonite (mixture of hydrated iron(III) oxide-hydroxides)
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
Agate (Chert/Chalcedony)
Silicon Dioxide (SiO2)