Mica Schist (Greenschist / Chlorite Schist)
Schist (rich in Muscovite, Chlorite, and Quartz)
metamorphic
Category
Metamorphic Or Igneous (Context Dependent)
Browse metamorphic or igneous (context dependent) specimens identified by the Rock Identifier community.
Learn about Metamorphic Or Igneous (Context Dependent) in the encyclopedia
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Gneiss
Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Nephrite Jade
Ca2(Mg, Fe)5Si8O22(OH)2 (Tremolite-Actinolite series)
metamorphic
Ruby in Zoisite
Zoisite with Corundum (Ca2Al3(SiO4)(Si2O7)O(OH) + Al2O3)
metamorphic
Ruby in Zoisite
Anyolite (Ruby in Zoisite)
metamorphic
Greenstone
Chlorite schist or metabasalt depending on specific composition
Metamorphic
Gneiss
Gneiss
metamorphic
Nephrite Jade
Tremolite-Actinolite solid solution Ca2(Mg,Fe)5Si8O22(OH)2
metamorphic
Black Beach Pebble (Basalt / Slate)
Basalt / Metamorphic Slate pebble
igneous
Dark metamorphic rock, likely hornfels or fine-grained basalt
Probable hornfels; commonly quartz–feldspar–mica with variable amphibole/pyroxene
metamorphic
Quartz–feldspar–mica metamorphic rock, likely gneiss
Gneiss; composition commonly quartz (SiO₂), feldspars, biotite/hornblende, and minor accessory minerals
metamorphic
Mica in Quartz Host
Muscovite (KAl2(AlSi3O10)(OH)2) in Quartz (SiO2)
igneous
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Pyritic Gneiss
Metamorphic Gneiss with Pyrite inclusions
metamorphic
Greenstone (Epidote/Chlorite Rich Rock)
Metabasalt (often contains Epidote Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH))
metamorphic
Epidosite
Epidosite (predominantly Epidote {Ca2Al2Fe3+Si3O12(OH)} and Quartz {SiO2})
metamorphic
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Rutilated Quartz
Quartz (SiO2) with Rutile (TiO2) inclusions
Mineral
Garnet (likely Almandine or a blend)
Garnet group: X3Y2(SiO4)3, where X can be Ca, Mg, Fe2+, Mn2+ and Y can be Al, Fe3+, Cr3+. Given the dark, somewhat reddish-brown appearance in the image, it's likely Almandine (Fe3Al2(SiO4)3) or a mix with other iron-rich garnets.
Mineral
Quartz (Milky/Iron-stained)
Silicon Dioxide (SiO2)
mineral
Lapis Lazuli
(Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2 (Complex silicate rock)
metamorphic
Lapis Lazuli (Low-grade)
Lapis Lazuli (Aggregate of Lazurite, Calcite, and Pyrite)
metamorphic
Gneiss (or Granite Gneiss)
Metamorphic rock rich in quartz, feldspar, and biotite/amphibole
metamorphic
Greenschist / Serpentinite Cobble
Greenschist (composed primarily of chlorite, actinolite, and epidote)
metamorphic
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Mica Schist
Schist (Muscovite/Biotite Schist)
metamorphic
Mica-rich Schist fragment
Mica Schist
metamorphic
Gneiss
Metamorphic rock of high-grade regional metamorphism
metamorphic
Greenstone
Chlorite schist / Meta-basalt
metamorphic
Banded Gneiss / Metamorphic River Pebble
Gneiss (Foliated Metamorphic Rock)
metamorphic
Greenstone
Greenschist (Greened Metabasalt)
metamorphic
Greenstone / Epidosite
Metamorphosed Mafic Igneous Rock (Epidote-Chlorite group)
metamorphic
Gneiss
Gneiss (high-grade metamorphic rock typically composed of quartz, feldspar, and mica)
metamorphic
Greenstone
Metamorphic Rock (Greenschist facies)
metamorphic
Gneiss
Gneiss (foliated metamorphic rock)
metamorphic
Greenstone
Metabasalt / Metavolcanic rock
metamorphic