Quartz with inclusions
SiO2
mineral
Category
Metamorphic Mineral
Browse metamorphic mineral specimens identified by the Rock Identifier community.
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Milky quartz fragment
Quartz (silicon dioxide, SiO₂)
mineral
Milky quartz
Quartz, silicon dioxide (SiO₂)
mineral
Milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Schist
Metamorphic Rock (Mica Schist)
metamorphic
Polished granite or gneiss stone
Granite, chiefly quartz, feldspar, and dark mica/amphibole; exact identification is uncertain from the photograph
igneous
Quartzite with Iron Staining
Metamorphic Quartz Sandstone
metamorphic
Epidote
Epidote (formula: Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
mineral
Dark green schist (probable chlorite/actinolite schist)
Chlorite–actinolite schist; exact mineral identification requires testing
metamorphic
Hematite (likely Botryoidal or Specularite variant)
Iron(III) oxide (Fe2O3)
mineral
Greenstone / Greenschist
Greenschist (containing Chlorite, Epidote, Actinolite)
metamorphic
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Quartz pebble
Silicon dioxide (SiO2)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Biotite-rich mica schist
Mica schist, likely containing biotite and quartz with possible feldspar
metamorphic
Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
mineral
Tumbled quartz-rich pebble, possibly milky quartz or quartzite
Quartz (SiO₂), potentially quartzite if metamorphically recrystallized
mineral
Quartz-rich rock fragment
Likely milky quartz (SiO₂), possibly a pale quartzite fragment
mineral
Fuchsite
K(Al,Cr)2(AlSi3)O10(OH)2
mineral
Specular Hematite (Specularite)
Iron(III) oxide (Fe2O3)
mineral
Magnetite
Magnetite (Iron(II,III) oxide, Fe3O4)
mineral
Rainbow Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Epidote in Matrix (likely Amphibolite or Gneiss)
Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)) in Metamorphic Matrix
metamorphic
Sapphirine in Matrix
Sapphirine (Mg,Al)8(Al,Si)6O20
mineral
Chalcopyrite
Copper Iron Sulfide (CuFeS2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Apatite
Fluorapatite, Chlorapatite, and Hydroxylapatite (Ca5(PO4)3(F,Cl,OH))
mineral
Jadeite and Assorted Corundum (Ruby/Sapphire) / Beryl (Emerald)
Jadeite (NaAlSi2O6), Ruby/Sapphire (Al2O3), Emerald (Be3Al2(SiO3)6)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Rhodonite in Matrix
Rhodonite (Manganese Silicate) - (Mn2+,Fe2+,Mg,Ca)SiO3
mineral
Magnetite (or Magnetic Iron Ore)
Magnetite (Fe3O4)
mineral
Granite-like granitic rock
Crystalline plutonic rock, primarily quartz, feldspar, and mica/amphibole
igneous
Tumbled green aventurine (probable)
Quartz variety: aventurine quartz, SiO₂, colored commonly by fuchsite mica
mineral
Rough garnet-bearing rock (likely almandine garnet in host rock)
Garnet, probably almandine (Fe₃Al₂(SiO₄)₃), in a garnet-bearing metamorphic matrix
metamorphic
Weathered schist
Mica schist, typically quartz–mica schist
metamorphic
Quartz on Schist
Silicon Dioxide (SiO2) on Foliated Metamorphic Rock
metamorphic
Pyrite (or Arsenopyrite / Ore mineral aggregate)
FeS2 (Iron Sulfide)
mineral
Quartz fragment
Quartz (silicon dioxide, SiO₂)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Muscovite Mica
Muscovite / KAl2(AlSi3O10)(OH)2
mineral
Polished garnet bead (likely almandine)
Almandine garnet, Fe₃Al₂(SiO₄)₃ (tentative visual identification)
gemstone
Banded Gneiss
Gneiss (SiO2 enriched metamorphic rock)
metamorphic