Mica Schist
Mica Schist (primarily Muscovite or Biotite KAl2(AlSi3O10)(OH)2)
metamorphic
Category
Sedimentary Or Metamorphic Derived
Browse sedimentary or metamorphic derived specimens identified by the Rock Identifier community.
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Asphalt aggregate
Human-made bituminous asphalt containing crushed silicate rock aggregate
sedimentary
Red Jasper (Quartzite)
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Polished fossil coral
Fossilized coral, commonly agatized coral (silica replacing CaCO₃)
fossil
Light-colored quartz-rich pebble
Likely quartz (silicon dioxide, SiO₂), possibly a weathered quartzite fragment
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Orthoclase Feldspar
Potassium aluminum silicate (KAlSi3O8)
mineral
Ruby in Zoisite
Zoisite with Corundum (Ca2Al3(SiO4)(Si2O7)O(OH) + Al2O3)
metamorphic
Mica Schist
Schist (Muscovite/Biotite Schist)
metamorphic
Anthracite Coal
Anthracite (Carbon Content: 86%-97%)
metamorphic
Rhodonite
Manganese silicate (MnSiO3)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Green Aventurine
Silicon Dioxide (Quartz) with inclusions of Fuchsite mica (K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Weathered greenish-brown rock, likely serpentinized ultramafic rock
Serpentinite; chiefly serpentine-group minerals (Mg₃Si₂O₅(OH)₄), possibly with olivine, pyroxene, magnetite, or carbonate
metamorphic
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Ruby in Zoisite
Anyolite (composite of Corundum Al2O3 and Zoisite Ca2Al3(SiO4)(Si2O7)O(OH))
metamorphic
Mica Schist (with Garnet)
Garnet-Mica Schist
metamorphic
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Almandine Garnet
Almandine, Fe3Al2(SiO4)3
mineral
Mica Schist
Mica Schist (Composition typically contains Muscovite: KAl2(AlSi3O10)(OH)2 or Biotite: K(Mg,Fe)3AlSi3O10(OH)2 along with Quartz and Feldspar)
metamorphic
Mica Schist with Quartz
Crystalline Schist (SiO2 + KAl2(AlSi3O10)(OH)2)
metamorphic
Small tumbled quartz-like pebble
Likely quartz (SiO₂), possibly milky quartz or pale chalcedony
mineral
Quartz Vein in Pelite (Metamorphic Rock)
Hydrothermal Quartz Veining in Metasedimentary Rock (SiO2)
metamorphic
Weathered quartzite cobble
Quartzite, predominantly crystalline SiO₂
metamorphic
Small pale mineral/rock fragment
Indeterminate; possibly weathered quartz, calcite, or light-colored limestone
mineral
Greenschist / Migmatite
Regional Metamorphic Complex (Facies: Greenschist to Amphibolite)
metamorphic
Mica Schist
Mica Schist (KAl2(AlSi3O10)(OH)2)
metamorphic
Gneiss pebble
Biotite–quartz–feldspar gneiss, possibly granitic gneiss
metamorphic
Clear Quartz Sphere
Quartz (Silicon Dioxide, SiO2)
mineral
Mica Schist with Quartz
Schist containing Muscovite and Quartz
metamorphic
Blue Apatite
Apatite - Ca5(PO4)3(F,Cl,OH)
mineral
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
mineral
Mica Schist
Mica Schist (primarily Muscovite or Biotite-rich sequence)
metamorphic
Small rounded mineral/rock fragment
Indeterminate; possibly quartz-rich stone or feldspar
mineral
Small tumbled pebble (likely quartz or feldspar)
Indeterminate; probable quartz (SiO₂) or feldspar
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
gemstone
Mica Schist
Mica Schist (primarily Muscovite or Biotite)
metamorphic
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
mineral
Yellow Jasper
Jasper (Silica-rich Microcrystalline Quartz, SiO2)
sedimentary
Muscovite Mica
Muscovite - KAl2(AlSi3O10)(OH)2
mineral
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary