Schist
Mica Schist
metamorphic
Category
Mineral (Refined Metal)
Browse mineral (refined metal) specimens identified by the Rock Identifier community.
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Biotite Schist
Biotite Schist (containing K(Mg,Fe)3AlSi3O10(OH)2)
metamorphic
Mica Schist
Mica-rich Schist containing Muscovite and Quartz
metamorphic
Granite
Felsic intrusive igneous rock
igneous
Gneissic Schist
Gneiss-schist (Metamorphic rock)
metamorphic
Schist
Mica Schist
metamorphic
Sunstone
Feldspar group (Oligoclase / Labradorite)
gemstone
Schist
Mica Schist (Medium-grade metamorphic rock)
metamorphic
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Schist
Mica Schist
metamorphic
Limonite (Ironstone) Concretion
FeO(OH)·nH2O (Hydrous ferric oxide)
sedimentary
Ironstone Concretion
Siderite or Hematite-rich Concretion (FeCO3 / Fe2O3)
sedimentary
Mica Schist
Schist (primarily Muscovite and Biotite mica)
metamorphic
Rainbow Moonstone
White Labradorite (Plagioclase Feldspar, (Na,Ca)(Al,Si)4O8)
gemstone
Tiger Iron
Tiger Iron (composite of Tiger's Eye, Red Jasper, and Hematite)
metamorphic
Ironstone pebble
Ironstone (Ferruginous Sedimentary Rock)
sedimentary
Ironstone Concretion (Boxwork)
Siderite-Limonite Concretion (FeO(OH)·nH2O)
sedimentary
Ironstone Concretion
Ferruginous Sandstone / Siderite Concretion
sedimentary
Mica Schist
Mica Schist (with Muscovite)
metamorphic
Ironstone Nodules / Siderite Concretion
Siderite (FeCO3) / Ferruginous Septarian Concretion
sedimentary
Ironstone Concretion (Limonite/Goethite)
Ironstone (composed primarily of Goethite FeO(OH) and Limonite)
sedimentary
Moqui Marble (Ironstone Concretion)
Goethite/Hematite Concretion (Fe2O3 / FeO(OH))
sedimentary
Mica Schist
Mica Schist (primarily Muscovite or Biotite sheet silicates)
metamorphic
Auriferous Quartz (Gold-bearing Quartz)
Silicon Dioxide (SiO2) with Elemental Gold (Au)
mineral
Magnetite
Iron(II,III) oxide (Fe3O4)
mineral
Peacock Ore
Bornite (Cu5FeS4) or Acid-Treated Chalcopyrite (CuFeS2)
mineral
Auriferous Quartz with Pyrite
Gold-bearing Quartz (SiO2 + FeS2 + Au)
mineral
Botryoidal hematite/goethite specimen
Hematite (Fe₂O₃), likely mixed with goethite (FeO(OH))
mineral
Pyrite cluster in a sulfide-rich ore matrix
Pyrite, FeS₂, likely with pyrrhotite and/or chalcopyrite in matrix
mineral
Hematite (Specularite)
Fe2O3 (Iron(III) oxide)
mineral
Schorl (Black Tourmaline)
Sodium Iron Aluminum Borosilicate (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Goldstone
Avventurina (Man-made Glass with Copper inclusions)
mineral
Black Tourmaline (Schorl)
Schorl (NaFe2+3Al6(BO3)3Si6O18(OH)4)
mineral
Black Tourmaline (Schorl)
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Quartz with Schorl inclusions
Silicon Dioxide (SiO2) with Sodium Iron Aluminum Borosilicate Hydroxide (Black Tourmaline)
mineral
Sunstone (Feldspar)
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8 with inclusions of Hematite/Goethite
mineral
Black Tourmaline
Schorl (Sodium iron aluminum borosilicate), NaFe3Al6(BO3)3Si6O18(OH)4
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral