Greenstone (Greenschist facies)
Greenschist (composed primarily of Chlorite, Actinolite, and Epidote)
metamorphic
Category
Metamorphic Mineral
Browse metamorphic mineral specimens identified by the Rock Identifier community.
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Green Aventurine
Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Banded Marble
Recrystallized Calcite (CaCO3)
metamorphic
Quartz (Milky/Iron-stained)
Silicon Dioxide (SiO2)
mineral
Epidote
Epidote; Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
mineral
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Ferruginous Quartz (Iron-stained Quartz)
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
mineral
Garnet (Almandine)
Almandine (Fe3Al2(SiO4)3)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Epidote
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
mineral
Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
mineral
Clear Quartz (or Rock Crystal)
Quartz (SiO₂)
Mineral
Tiger's Eye
Silicon dioxide (SiO2) with fibrous inclusions of crocidolite (riebeckite)
Mineral
Rhodonite in Quartz Matrix
Rhodonite (Manganese Silicate - (Mn,Fe,Mg,Ca)SiO3)
mineral
Banded Gneiss
Gneiss (complex metamorphic silicate rock)
metamorphic
Epidosite
Epidosite (composed primarily of Epidote and Quartz)
metamorphic
Quartzite with Chlorite
Metamorphic Quartzite (SiO2) with phyllosilicates
metamorphic
Slate
Slate (Foliated metamorphic rock)
metamorphic
Banded Gneiss (River Rock/Pebble)
Gneiss (specifically a banded variety often found as a river rock)
Metamorphic Rock
Muscovite Schist
KAl2(AlSi3O10)(OH)2 (Muscovite) in Schist Matrix
metamorphic
Green Aventurine
Aventurine Quartz (SiO2 with inclusions of Fuchsite)
metamorphic
Black Sapphire
Corundum (Al2O3 with inclusions of hematite or ilmenite)
mineral
Amazonite
K(AlSi3O8) - Lead-bearing Microcline (Tectosilicate)
mineral
Pyrite in Quartz
Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)
mineral
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
metamorphic
Micaceous Schist
Mica Schist (primarily Muscovite or Biotite KAl2(AlSi3O10)(OH)2)
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
White Marble
Recrystallized Calcite (CaCO3)
metamorphic
Epidosite
Epidosite (Metasomatic calcium-aluminum silicate rock)
metamorphic
Serpentinite
Serpentinite (composed primarily of Serpentine-group minerals: (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)
metamorphic
Quartzite with inclusions
Quartzite (SiO2)
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Clear Quartz
Silicon dioxide (SiO2)
mineral
Yellow Quartz (Citrine Quartz)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Aventurine
Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
mineral
Quartzite
Quartzite (Primary mineral: Silicon Dioxide, SiO2)
metamorphic
Quartzite
Quartzite (Primary mineral: Silicon Dioxide, SiO2)
metamorphic
Schist
Mica Schist
metamorphic
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic