Schist
Mica Schist
metamorphic
Category
Igneous And Metamorphic
Browse igneous and metamorphic specimens identified by the Rock Identifier community.
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Biotite (Black Mica) in Host Rock
K(Mg,Fe)3AlSi3O10(OH,F)2
mineral
Micaceous Rock (likely Muscovite Schist/Gneiss or a Muscovite-rich Specimen)
Predominantly Muscovite (KAl2(AlSi3O10)(F,OH)2), often found in rocks like Muscovite Schist or Muscovite Gneiss.
Metamorphic, Mineral (within a rock type)
Banded Gneiss with Quartz Vein
Foliated Metamorphic Rock (Gneiss)
metamorphic
Muscovite Mica
Muscovite KAl2(AlSi3O10)(OH)2
mineral
Graphite
Graphite (Chemical Formula: C)
Mineral (Native Element)
Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Yellow Aventurine
Quartz (SiO2) with inclusions
mineral
Banded metamorphic rock, likely gneiss
Biotite–quartz–feldspar gneiss, possibly amphibolite-bearing
metamorphic
Greenstone with Pyrite inclusions
Greenschist / Meta-volcanic rock with Iron Disulfide (FeS2)
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Greenstone
Epidiorite / Altered Basalt
metamorphic
Gneiss
Gneiss
metamorphic
Greenstone / River Jadeite pebble
Metavolcanic rock / Chlorite or Actinolite-rich schist
metamorphic
Banded gneiss (likely amphibolite-rich gneiss)
Banded gneiss; composition commonly quartz, feldspar, mica and/or amphibole
metamorphic
Dragon Stone (Dragon Blood Jasper)
Epidote with Pietersite or Red Jasper inclusions (varied SiO2 and Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Epidote
Epidote (formula: Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
mineral
Unidentified gray stone
Likely quartz-rich stone; exact identification is not possible from the image
mineral
Tumbled or naturally etched mica-rich mineral specimen, likely muscovite
Muscovite, KAl₂(AlSi₃O₁₀)(OH)₂; possibly phlogopite mica
mineral
Yellow Sapphire
Corundum (Al2O3:Fe)
gemstone
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Blue Sapphire
Corundum (Al2O3)
gemstone
White Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Feldspar
Aluminosilicate (KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Sand / Sandstone grains
Silicon Dioxide (SiO2)
sedimentary
Green Aventurine
Quartz with Fuchsite inclusions (SiO2)
mineral
Quartz with Mica
Silicon Dioxide (SiO2) with Mica group inclusions
mineral
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Amazonite
Microcline Feldspar (KAlSi3O8)
mineral
Chalcopyrite (Peacock Ore)
Chalcopyrite (CuFeS2)
mineral
Clear Quartz (Tumbled)
Silicon Dioxide (SiO2)
mineral
Pink Sapphire
Corundum (Al2O3 with chromium and iron traces)
gemstone
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Pink Feldspar (Orthoclase)
Orthoclase Feldspar (KAlSi3O8)
mineral
Garnet
Garnet Group (formula varies: e.g., Almandine Fe3Al2Si3O12 or Pyrope Mg3Al2Si3O12)
gemstone