Hematite
Hematite (Fe2O3)
Category
Browse metal (elemental mineral) specimens identified by the Rock Identifier community.
Hematite
Hematite (Fe2O3)
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Chalcopyrite
Chalcopyrite (CuFeS2)
Quartz with Mica inclusions (Gold-colored Mica)
Silicon Dioxide (SiO2) with Potassium Aluminum Silicate (Phlogopite/Muscovite) inclusions
Iron Meteorite
Siderite (Iron-Nickel Alloy), predominantly Kamacite and Taenite (Fe, Ni)
Aventurine (Green Quartz)
Silicon Dioxide (SiO2) with inclusions of Fuchsite (Mica)
Muscovite Mica
Muscovite: KAl2(AlSi3O10)(OH)2
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Pyrite on Quartz
Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)
Sunstone
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
Peacock Ore
Bornite (Cu5FeS4)
Mica Schist
Mica Schist (Quartz-Biotit-Muscovite Schist)
Mica Schist
Mica Schist (Predominantly Muscovite/Biotite)
Quartzite
Quartzite (Primary mineral: SiO2)
Basalt
Basalt
Schist (Micaceous)
Mica Schist
Fossil / Permineralized Bone
Tyrannosaurus rex fossil (Hydroxylapatite replaced by various minerals)
Schist (Garnet-Mica Schist)
Garnet-Mica Schist
Basalt
Basalt (Mafic Extrusive Igneous Rock)
Banded Iron Formation (BIF) / Iron Ore
Banded Iron Formation (composed primarily of Hematite (Fe2O3) and Magnetite (Fe3O4) with Quartz/Chert)
Schist
Mica Schist (primarily Muscovite and Quartz)
Folded Schist / Gneiss (Metamorphic Rock)
Regional Metaphoric Folded Outcrop (predominantly Schist/Gneiss)
Basalt with Scoria/Vesicular Texture
Extrusive Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)
Basalt
Extrusive mafic igneous rock; primarily (Ca,Na)(Mg,Fe,Al,Si)2O6 with (Ca,Na)(Al,Si)4O8
Green Fluorite
Calcium Fluoride (CaF2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Sodalite
Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)
Orange Calcite (Polished Sphere)
Calcium Carbonate (CaCO3)
Green Fluorite
Calcium Fluoride (CaF2)
Fluorite (translucent octahedral crystal)
Calcium fluoride (CaF2)
Aura Quartz
Titanium/Titanium-Gold treated Silicon Dioxide (SiO2)
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
Fluorite
Calcium Fluoride (CaF2)
Fluorite
Calcium Fluoride (CaF2)
Green Fluorite
Fluorite (Calcium Fluoride - CaF2)
Fluorite (Purple variety)
Calcium Fluoride (CaF2)
Fluorite
Calcium Fluoride (CaF2)
Mica Schist
Crystalline Schist (often containing Muscovite, Biotite, and Quartz)
Quartzite
Quartzite (primarily SiO2)
Schist
Mica Schist (primarily consisting of muscovite, biotite, and quartz)