Schist
Mica Schist
metamorphic
Category
Mineral (Refined Metal)
Browse mineral (refined metal) specimens identified by the Rock Identifier community.
Obsidian (specifically Rainbow or Silver Sheen Obsidian)
Volcanic Glass (predominantly SiO2)
Igneous
Vesicular Basalt (commonly mistaken for Slag)
Scoriaceous Basalt (composed primarily of Plagioclase Feldspar and Pyroxene)
igneous
Schist
Mica Schist (Quartz-Muscovite-Biotite Schist)
metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite (mica)
Mineral (variety of Quartz)
Opalite
Synthetic Glass, SiO2 base with metallic inclusions
mineraloid (synthetic)
Moqui Marble (Concretion)
Iron Oxide Concretion (Hematite-cemented Sandstone)
sedimentary
Rutilated Quartz
Quartz with Rutile Inclusions (SiO2 with TiO2 inclusions)
Mineral
Schist
Mica Schist (primarily Muscovite and Quartz)
metamorphic
Iron Slag (Industrial Byproduct)
Anthropogenic Vitrification Product/Ferrous Slag
Mineral-like Industrial Smelting Waste
Galena
Galena (Lead Sulfide), PbS
mineral
Hypersthene
(Mg,Fe)SiO3 - Enstatite-Ferrosilite series
mineral
Rutilated Quartz
SiO2 with TiO2 inclusions (Rutile)
Mineral
Magnetite
Magnetite (Fe3O4)
Mineral
Lapis Lazuli
Lapis Lazuli (a rock composed primarily of Lazurite (Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2, with varying amounts of Calcite, Pyrite, and Sodalite).
Mineral
Moqui Marble (Moqui Ball)
Ironstone Concretion (Goethite/Hematite cemented Sandstone)
sedimentary
Silver Sheen Obsidian
Volcanic Glass (Amorphous Silicon Dioxide - SiO2 with impurities)
igneous
Mica Schist
Mica Schist (primarily Muscovite or Biotite sheet silicates)
metamorphic
Dumortierite Quartz (Blue Quartz)
Al7(BO3)(SiO4)3O3 / Quarz with Dumortierite inclusions
mineral
Tree Agate (or Moss Agate)
Dendritic Agate (Silicon Dioxide - SiO2)
mineral
![Schist (Mica Schist (formula variable based on mineral content, typically containing [K,Al,Fe,Mg,Si,O,H])) — metamorphic](https://media.rockidentification.com/82921e91-3bee-4a52-8b94-97f62233f834-thumbnail.jpg)
Schist
Mica Schist (formula variable based on mineral content, typically containing [K,Al,Fe,Mg,Si,O,H])
metamorphic
Iron Slag
Iron Slag (Industrial Vitreous Material)
Mineral/By-product
Jasper with Pyrite (Gold-colored inclusions)
Silicon Dioxide (SiO2) with Iron Disulfide (FeS2) inclusions
sedimentary (chemical/biological)
Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Anthracite Coal
Anthracite (Carbon-rich metamorphic coal)
metamorphic
Almandine Garnet in Schist
Almandine, Fe3Al2(SiO4)3
metamorphic
Sandstone (Micaceous Sandstone)
Arenite (SiO2 with KAl2(AlSi3O10)(OH)2 inclusions)
sedimentary
Carborundum (Silicon Carbide)
Silicon Carbide (SiC)
mineral (synthetic)
Schist
Mica Schist
metamorphic
Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Mica Schist
Mica Schist (predominantly Muscovite/Biotite)
metamorphic
Obsidian (specifically Silver Sheen Obsidian)
Volcanic Glass (approx. 70–75% SiO2 plus MgO, Fe3O4)
igneous
Basalt
Basalt (Aphanitic Mafic Igneous Rock)
igneous
Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Man-made earbud charging case (Not a rock or mineral)
Acrylonitrile Butadiene Styrene (ABS) Plastic with electronic components
Synthetic/Man-made object
Quartzite
Quartzite (primarily SiO2)
metamorphic
Blue Goldstone
Aventurine glass (Synthetic borosilicate glass with cobalt and metallic inclusions)
man-made glass
Amphibolite with Hornblende
Amphibole-rich Metamorphic Rock (Ca2(Mg,Fe)5Si8O22(OH)2)
metamorphic
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Fluorite (Rainbow Fluorite)
Calcium Fluoride (CaF2)
mineral
Micaceous Schist
Mica Schist (primarily Muscovite or Biotite KAl2(AlSi3O10)(OH)2)
metamorphic