Fluorite
Calcium Fluoride (CaF2)
Category
Browse mineral like industrial smelting waste specimens identified by the Rock Identifier community.
Fluorite
Calcium Fluoride (CaF2)
Pink tourmaline crystal (likely polished or rough-cut)
Elbaite, Na(Li₁.₅Al₁.₅)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
Garnet
Garnet Group (Silicate Minerals)
Kaolin (China Clay)
Kaolinite [Al2Si2O5(OH)4]
Granitoid (Pegmatitic Granite)
Granitoid with dominant Potassium Feldspar and Quartz
Desert Rose (Sand Barite/Gypsum Rose)
Barium Sulfate (BaSO4) or Hydrated Calcium Sulfate (CaSO4·2H2O)
Pink Garnet (likely Almandine or Rhodolite)
Garnet Group (Fe3Al2(SiO4)3 to Mg3Al2(SiO4)3)
Vanadinite
Lead Chlorovanadate - Pb5(VO4)3Cl
Pegmatite or Graphic Granite
Intrusive Igneous Rock
Cobalt Blue Glass / Cullet Glass
Silicon dioxide (Amorphous man-made glass)
Schist
Mica Schist
Muscovite Mica
KAl2(AlSi3O10)(OH)2
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) in matrix
Botryoidal chalcedony (likely moss or plume agate)
Microcrystalline quartz, SiO₂; chalcedony with possible iron/manganese inclusions
Orthoclase Feldspar
Potassium aluminum silicate (KAlSi3O8)
Schist
Chlorite or Mica Schist
Blue Sapphire (likely costume glass imitation)
Corundum (Al2O3) with iron/titanium impurities
Raw Sapphire / Corundum
Corundum (Al2O3 - Aluminium oxide)
Schist
Mica Schist
Arsenopyrite in Quartz/Host Rock
Arsenopyrite (FeAsS)
Vanadinite on Matrix
Vanadinite (Pb5(VO4)3Cl)
Garnet (Almandine)
Almandine (Fe3Al2(SiO4)3)
Schist
Mica Schist
Sea Shell Fragment (Calcium Carbonate)
Aragonite / Calcite (CaCO3)
Pink Sapphire (Corundum)
Aluminum Oxide (Al2O3) with Chromium/Iron impurities
Silver Nugget
Native Silver (Ag)
Fossilized Shark Tooth
Carcharodon (Galeocerdo sp. or Lamniform)
Rough Diamond
Diamond (pure Carbon, C)
Granite Gravel (Pebble)
Intrusive Felsic Igneous Rock
Diamond (or Diamond Simulant/Cubic Zirconia)
Carbon (C) - if diamond, or Zirconium dioxide (ZrO2) - if Cubic Zirconia
Quartz Geode Fragment
Silicon Dioxide (SiO2)
Schist
Schist (variety likely Mica Schist)
Likely silicon carbide (carborundum)
Synthetic silicon carbide (SiC), likely blue-green crystalline grit
Sandstone (likely Siltstone or Mudstone)
Clastic sedimentary rock (primarily SiO2 with various oxides)
Black Kyanite
Aluminum Silicate (Al2SiO5)
Milky Quartz (Ferruginous)
Silicon Dioxide (SiO2)
Granitic Pegmatite
Pegmatite (Quartz: SiO2, Feldspar: KAlSi3O8, Mica: KAl2(AlSi3O10)(OH)2)
Schist
Schist (Crystalline metamorphic rock)
Green sea glass (likely)
Anthropogenic glass, not a mineral; composition commonly soda–lime silicate glass
Pegmatite
Igneous Pegmatite
Epidote-bearing Rock / Epidote Inclusion
Epidote (Ca2(Al, Fe)3(SiO4)3(OH)) in host rock