Weathered banded gneiss (probable)
Foliated quartz–feldspar gneiss; exact minerals cannot be confirmed from the image
metamorphic
Category
Metamorphic Mineral
Browse metamorphic mineral specimens identified by the Rock Identifier community.
Learn about Metamorphic Mineral in the encyclopedia
View all →
Fuchsite
K(Al,Cr)2(AlSi3O10)(OH)2
mineral
Almandine Garnet
Almandine, Fe3Al2(SiO4)3
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Green Aventurine
Silicon Dioxide (Quartz) with Fuchsite inclusions (K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Rhodonite
Rhodonite (Manganese Silicate), chemical formula: (Mn,Fe,Mg,Ca)SiO3
Mineral
Green Aventurine
SiO2 (Silicon Dioxide with Fuchsite inclusions)
mineral
Magnetite-rich Iron Ore
Magnetite (Fe3O4)
mineral
Banded gneiss
Gneiss, likely quartz–feldspar–mica gneiss
metamorphic
Small banded metamorphic rock fragment
Indeterminate foliated metamorphic rock; possibly mica schist or gneiss
metamorphic
Gneiss
Gneiss (Metamorphic rock)
metamorphic
Quartz with Inclusions
Silicon Dioxide (SiO2)
mineral
Garnet (Almandine/Pyrope series)
Silicate mineral (Almandine: Fe3Al2Si3O12; Pyrope: Mg3Al2Si3O12)
mineral
Clear quartz (rock crystal)
Quartz, crystalline silicon dioxide (SiO₂)
mineral
Milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Dumortierite Quartz
Al7BO3(SiO4)3O3 (Aluminum borate silicate)
mineral
Weathered quartz-rich metamorphic rock, likely milky quartz or quartzite
Quartz (SiO₂), possibly quartzite with iron-oxide staining and dark inclusions
metamorphic
Garnet in marble
Likely almandine or pyrope garnet (X₃Y₂(SiO₄)₃) in calcite marble; species cannot be confirmed from the image alone.
metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
metamorphic
Pyrite in Matrix (Gold-colored Chalcopyrite or Pyrite)
Iron Sulfide (FeS2) / Copper Iron Sulfide (CuFeS2)
mineral
Tumbled clear quartz
Quartz (SiO₂)
mineral
Tumbled clear quartz
Quartz (silicon dioxide, SiO₂)
mineral
Small quartz-rich mineral fragment
Quartz (SiO₂), possibly milky or chalcedonic quartz
mineral
Epidote-bearing Rock
Epidote / Silicate mineral aggregate
metamorphic
Likely weathered quartz-rich rock, possibly granite or gneiss
Granite–gneiss assemblage; chiefly quartz, feldspar, and dark mica/amphibole
igneous
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Ruby in Zoisite
Anyolite (Zoisite with Corundum) Member of the Epidote Group
metamorphic
Pyrite
Iron Disulfide (FeS2)
mineral
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
mineral
Gneiss
Metamorphic Gneiss
metamorphic
Banded gneiss (likely garnet-biotite or quartz-feldspar gneiss)
Gneiss; predominantly quartz (SiO₂), feldspar, and dark biotite/amphibole
metamorphic
Black spinel bead strand
Spinel, magnesium aluminum oxide (MgAl₂O₄)
gemstone
Quartz (Smoky/Brown variety)
Silicon dioxide (SiO2)
mineral
Unidentified gray mineral/rock fragment
Indeterminate from image; possibly quartz-rich material or mica-bearing schist
mineral
Tumbled garnet-bearing rock (possible almandine garnet)
Likely almandine garnet, Fe₃Al₂(SiO₄)₃, in a dark host rock; identification is uncertain from the image alone.
metamorphic
Tumbled green epidote–quartz (probable)
Epidote, Ca₂(Al,Fe³⁺)₃(SiO₄)₃(OH), likely intergrown with quartz and/or chlorite
mineral
Yellow Apatite
Fluorapatite (Ca5(PO4)3(F,Cl,OH))
mineral
Green Aventurine
Silicon Dioxide (SiO2) with Chromium-rich Fuchsite mica
mineral
Gneiss
Banded Metamorphic Rock (Gneiss)
metamorphic
Gneiss
Gneiss (Metamorphic Rock)
metamorphic