Sandstone
Arenite (SiO2 primarily)
Category
Browse mineral like industrial smelting waste specimens identified by the Rock Identifier community.
Sandstone
Arenite (SiO2 primarily)
Granitic Pegmatite with Schorl
Granitic Pegmatite (NaAlSi3O8, KAlSi3O8, SiO2) with Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
Greenschist
Chlorite schist
Limonite (Iron Ore)
Limonite (̑FeO(OH)·nH₂O)
Silicon
Silicon (Si)
Schist
Mica Schist (formula variable based on mineral content, typically containing [K,Al,Fe,Mg,Si,O,H])
Black Tourmaline
Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)4)
Black Garnet (Melanite)
Andradite, Ca3Fe2(SiO4)3
Ruby
Corundum (Aluminium Oxide with Chromium impurities, Al2O3:Cr)
Quartz with Iron Inclusions
Silicon Dioxide (SiO2) with Hematite or Limonite staining
Mica in Quartz Host
Muscovite (KAl2(AlSi3O10)(OH)2) in Quartz (SiO2)
Note: Item is not a geological specimen
Guitar Components (Steel, Nickel, Plastic, Wood)
Pyrope Garnet
Magnesium aluminum silicate (Mg3Al2Si3O12)
Wollastonite
Calcium Inosilicate Mineral, CaSiO3
Granite Pegmatite with Tourmaline and Muscovite
Pegmatite (Feldspar: KAlSi3O8, Quartz: SiO2, Schorl: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH))
Blue Sapphire
Corundum (Al2O3) with iron and titanium impurities
Garnet (Almandine)
Almandine (Fe3Al2(SiO4)3)
Quartz Pebble
Silicon Dioxide (SiO2)
Pegmatite (Granitic) with Tourmaline
Granitic Pegmatite (containing Schorl and Quartz)
Potassium-Rich Silicate Clay (inferred from biological context)
Phyllosilicate group (likely Illite or Smectite within surrounding soil substrate)
Carborundum (Silicon Carbide)
Silicon Carbide (SiC)
Quartz / Agate Nodule
Silicon Dioxide (SiO2)
Hypersthene
(Mg,Fe)SiO3 - Enstatite-Ferrosilite series
Calcite
Calcium Carbonate (CaCO3)
Orange Sapphire
Corundum (Al2O3 with trace elements)
Quartz Geode
Silicon Dioxide (SiO2)
Basalt
Aphanitic Mafic Igneous Rock
Epidote
Epidote - Ca2(Al2,Fe3+)3(SiO4)3(OH)
Crushed Stone (Gravel/Aggregates)
Crushed rock aggregate (varied composition including Granite, Limestone, and Quartz)
Bornite (Peacock Ore)
Bornite (Copper iron sulfide - Cu5FeS4)
Yellow Sapphire (Corundum)
Corundum (Aluminum Oxide, Al2O3)
Pegmatite
Granitic Pegmatite
Sandstone (Iron-stained)
Arenite (primarily SiO2 with Fe2O3 staining)
Anthracite Coal
Anthracite (Carbon-rich metamorphic coal)
Blue Sapphire
Corundum (Al2O3) with traces of Iron and Titanium
Pink Orthoclase Feldspar with Dendrites
Orthoclase (KAlSi3O8) with Manganese Oxide dendrites
Desert Rose
Gypsum or Barite (CaSO4·2H2O or BaSO4)
Green Fluorite
Fluorite (Calcium Fluoride - CaF2)
Arsenopyrite with Quartz
Arsenopyrite (FeAsS)
Sandstone
Arenite (Sandstone)
Anthracite Coal
Anthracite (Carbon)
Granite Pegmatite
Phaneritic Felsic Igneous Rock (Granite)