Black Tourmaline
Schorl (NaFe3Al6(Si6O18)(BO3)3(OH,F)4)
Category
Browse mineral like industrial smelting waste specimens identified by the Rock Identifier community.
Black Tourmaline
Schorl (NaFe3Al6(Si6O18)(BO3)3(OH,F)4)
Quartz Pebble (Chalcedony/Agate)
Silicon Dioxide (SiO2)
Sapphire (Raw/Rough)
Corundum (Al2O3)
Gneiss (specifically Micaceous Gneiss)
Gneiss (High-grade Regional Metamorphic Rock)
Yellow Sapphire
Corundum (Al2O3)
Chalcedony (specifically Agate or Moonstone-like Quartz)
Silicon Dioxide (SiO2)
Sandstone
Arenite (SiO2 + various cementing minerals)
Peridot
Olivine (Mg, Fe)2SiO4
Raw Emerald
Beryl (Be3Al2(SiO3)6) with Cr/V impurities
Kimberlite with Diamonds
Kimberlite (ultramafic potassic igneous rock)
Garnet
Garnet Group (Silicate Minerals), formula varies e.g., Almandine Fe3Al2(SiO4)3
Andesite Porphyry (Geological Drill Core)
Andesite Porphyry
Copper Ore (likely Chalcopyrite in Matrix)
Chalcopyrite (CuFeS2)
Quartz Crystal with Inclusions
Silicon Dioxide (SiO2)
Orange Calcite (with White Calcite/Quartz matrix)
Calcium Carbonate (CaCO3)
Tumbled Stone Collection (featuring Tiger's Eye, Rose Quartz, and Moss Agate)
Mixed Silicates and Oxides (predominantly SiO2 group minerals)
Schist
Mica Schist (Quartz-Muscovite-Biotite Schist)
Raw Diamond
Carbon (C)
Chalcedony (Agate)
Cryptocrystalline Quartz (SiO2)
Banded Agate
Agate (Cryptocrystalline variety of Quartz, SiO2)
Schist
Schist (Crystalline Metamorphic Rock)
Schist
Mica Schist
Garnet-Bearing Gneiss
Garnetiferous Feldspathic Gneiss
Serpentinite
Serpentinite (composed largely of Serpentine group minerals like Antigorite, Lizardite, and Chrysotile: Mg3Si2O5(OH)4)
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Epidote
{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Tourmaline (Multi-colored)
Complex Borosilicate (Na,Ca)(Li,Mg,Al,Fe)3Al6(BO3)3Si6O18(OH)4
Garnet (Almandine)
Almandine Fe3Al2(SiO4)3
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
Red Sandstone
Arenite (primarily Quartz with Iron Oxide coating)
Almandine Garnet
Almandine - Fe3Al2(SiO4)3
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Jasper (Milky/Cream Variety)
Silicon Dioxide (SiO2) - variety of Chalcedony
Agate
Chalcedony (SiO2)
Diamond (in jewelry setting)
Diamond (C - Pure Carbon)
Granitic Pegmatite
Pegmatitic Granite
Chalcedony (Agate)
Silicon Dioxide (SiO2)
Marble
Recrystallized Calcite Rock (CaCO3)
Milky Quartz with Dendritic Inclusions
Silicon Dioxide (SiO2)
Ruby (Raw Corundum)
Corundum (Al2O3:Cr)
Barite Rose
Barium Sulfate (BaSO4)
Garnet (Tumbled)
Almandine / Pyrope Garnet (Fe3Al2(SiO4)3 to Mg3Al2(SiO4)3)