Peacock Ore
Bornite (Cu5FeS4)
mineral
Category
Metamorphic
Browse metamorphic specimens identified by the Rock Identifier community.
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Milky Quartz
Silicon Dioxide (SiO2)
mineral
Soapstone
Steatite
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Slate
Slate (foliated metamorphic rock)
metamorphic
Jade (Nephrite or Jadeite)
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (Na(Al,Fe3+)Si2O6)
Metamorphic Rock / Mineral
Epidote in Matrix (likely Amphibolite or Gneiss)
Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)) in Metamorphic Matrix
metamorphic
Greenstone
Metamorphic Greenstone (Greenschist facies)
metamorphic
Gneissic Schist
Gneiss-schist (Metamorphic rock)
metamorphic
Quartz-Veined Slate or Greenstone
Metamorphic rock with quartz vein (SiO2)
metamorphic
Tumbled quartz-rich pebble
Microcrystalline quartz (SiO₂), possibly milky quartz or chalcedony
mineral
Milky quartz (iron-stained quartz)
Quartz, silicon dioxide (SiO₂)
mineral
Polished ruby-in-fuchsite (tentative)
Fuchsite mica with corundum (ruby), commonly in quartzite or mica schist
metamorphic
Quartz-rich rock, possibly quartzite
Quartzite (dominantly quartz, SiO₂); identification is provisional from the photo
metamorphic
Tumbled brown tourmaline
Dravite–schorl tourmaline, complex borosilicate; approximate formula Na(Mg,Fe)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄
mineral
Likely clear quartz pebble or glassy quartz fragment
Quartz (silicon dioxide, SiO₂)
mineral
Magnetite
Magnetite (Iron(II,III) oxide, Fe3O4)
mineral
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Ruby in Zoisite (Anyolite) or Tumbled Dyed Agate/Quartzite
Zoisite with Corundum (Al2O3 + Ca2Al3(SiO4)3(OH))
metamorphic
Zoisite with Rubellite (Ruby in Zoisite)
Zoisite with inclusions of Hornblende (Anyolite)
metamorphic
Muscovite
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Zoisite with Ruby
Anyolite (Calcium aluminum hydroxy silicate with Corundum) Ca2Al3(SiO4)3(OH)
metamorphic
Fuchsite in Quartz
K(Al,Cr)2(AlSi3O10)(OH)2 in SiO2
Metamorphic Rock / Mineral Association
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Rhodonite
Rhodonite (Mn,Fe,Mg,Ca)SiO3
mineral
Dark slate or fine-grained metamorphic rock
Slate; chiefly fine-grained phyllosilicates, quartz, and feldspar
metamorphic
Fuchsite
Fuchsite (a variety of Muscovite mica, K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Polished greenstone pebble
Likely serpentinite (serpentine-group minerals); identification from appearance alone is uncertain
metamorphic
Likely quartz-rich stone (possibly quartzite)
Quartzite, composed predominantly of quartz (SiO₂)
metamorphic
Quartz vein fragment
Quartz, silicon dioxide (SiO₂), likely milky to translucent quartz with iron-oxide or clay inclusions
mineral
Quartz-rich rock, possibly milky quartz or quartzite
Quartz (SiO₂); if quartzite, recrystallized quartz sandstone
metamorphic
Likely quartz-rich stone (possibly milky quartz or quartzite)
Quartz, silicon dioxide (SiO₂), or quartzite if interlocking grains are present
mineral
Dark gray metamorphic rock fragment
Likely slate or fine-grained schist; mineral composition cannot be confirmed from the image
metamorphic
Banded gneiss pebble
Gneiss, likely quartz–feldspar–mica gneiss
metamorphic
Banded Gneiss
Gneiss (SiO2 enriched metamorphic rock)
metamorphic
Pyrite Schist
Metamorphic rock containing FeS2 (Pyrite) with mica and quartz
metamorphic
Greenschist
Greenschist (containing Chlorite, Epidote, and Actinolite)
metamorphic
Eclogite
Eclogite (Omphacite-Garnet Rock)
metamorphic
Greenish Feldspathic Rock / Epidote Granite (Unakite-type or Epidote-bearing rock)
Epidotized Metamorphic/Igneous Rock
metamorphic
Gneiss
Metamorphic Gneiss (High-grade regional metamorphism)
metamorphic
Gneiss
Metamorphic rock of high-grade regional metamorphism
metamorphic