Garnet in Matrix
Almandine or Pyrope Garnet (X3Y2(SiO4)3) in Schist or Eclogite matrix
metamorphic
Category
Metamorphic (Modified)
Browse metamorphic (modified) specimens identified by the Rock Identifier community.
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Quartzite (River Stone)
Metamorphic Quartz (SiO2)
metamorphic
Banded Metamorphic Rock (likely Quartzite or Serpentinite/Soapstone)
Metamorphic Rock (possibly a banded Quartzite or a foliated Serpentinite/Talc Schist based on appearance, general term for such a rock is 'Banded Metamorphic Rock' or 'Gneiss' if pronounced banding of different minerals)
Metamorphic
Sandstone or Quartzite
Arenite (if sedimentary) / Quartzite (if metamorphic)
Sedimentary or Metamorphic
Specular Hematite (Specularite)
Iron(III) oxide (Fe2O3)
mineral
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Pink Quartz
Silicon Dioxide (SiO2)
mineral
Fuchsite
K(Al,Cr)2(AlSi3O10)(OH)2
mineral
Quartz on Chlorite Schist
Chlorite Schist (Mg,Fe)3(Si,Al)4O10(OH)2 with Quartz (SiO2)
metamorphic
Gneiss (Metamorphic Pebble)
Gneissic Metamorphic Rock
metamorphic
Garnet (likely Almandine or Pyrope)
Garnet (Group Name), Fe3Al2(SiO4)3 or Mg3Al2(SiO4)3
mineral
Almandine Garnet
Almandine - Fe3Al2(SiO4)3
mineral
Magnetite-rich ironstone (probable magnetite ore)
Magnetite, Fe₃O₄, likely in a fine-grained ironstone matrix
mineral
Tumbled rhodonite
Rhodonite, manganese inosilicate (MnSiO₃), commonly mixed with quartz and manganese oxides
metamorphic
Ruby in Zoisite
Anyolite
metamorphic
Pyrite
Iron Pyrite (FeS2)
mineral
Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
metamorphic
Pyrite (on the right) and Magnetite or Hematite (on the left)
Iron Sulfide (FeS2) and Iron Oxide (Fe3O4 or Fe2O3)
mineral
Green Aventurine
Silicon dioxide (SiO2) with inclusions of Fuchsite mica
metamorphic
Rhodonite
Manganese Silicate (Mn, Fe, Mg, Ca)SiO3
mineral
Lapis Lazuli
Lapis Lazuli (Rock composed mainly of lazurite, calcite, and pyrite)
gemstone
Nephrite Jade
Ca2(Mg,Fe)5Si8O22(OH)2 (Actinolite-Tremolite series)
metamorphic
Lapis Lazuli
Lapis Lazuli (Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2
metamorphic
Apatite
Calcium phosphate fluoride/chloride, Ca5(PO4)3(F,Cl,OH)
mineral
Apatite
Calcium phosphate fluoride/chloride, Ca5(PO4)3(F,Cl,OH)
mineral
Moonstone
Orthoclase (KAlSi3O8)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Garnet-bearing metamorphic rock, likely mica schist
Biotite–garnet schist; commonly includes quartz, feldspar, biotite, and almandine garnet
metamorphic
Almandine Garnet
Almandine, Fe3Al2(SiO4)3
mineral
Gneiss with Quartz Vein
Metamorphic Gneiss with Quartz (SiO2) and Feldspar Injection
metamorphic
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Epidosite (Unakite-related)
Epidosite (composed primarily of Epidote and Quartz)
metamorphic
Tumbled green aventurine
Quartz (SiO₂), commonly containing fuchsite mica inclusions
mineral
Sunstone and Garnet
Plagioclase Feldspar ((Na,Ca)(Al,Si)4O8) and Almandine Garnet (Fe3Al2(SiO4)3)
gemstone
Green Aventurine
Aventurine Quartz (SiO2 + Fuchsite inclusions)
mineral
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Green Slate or Metamorphic Rock with Moss/Lichen
Metamorphic rock / Phyllite or Slate variant
metamorphic
Green Slate Pebble (Serpentine / Greenschist Pebble)
Greenschist / Low-grade Metamorphic Rock
metamorphic
Phyllite
Phyllite (Intermediate grade metamorphic rock)
metamorphic
Fuchsite
Chromium-rich Muscovite (KAl2(AlSi3O10)(OH,F)2 with Cr replacements)
mineral
Jade (likely Jadeite)
Jadeite (a pyroxene mineral) or Nephrite (a variety of amphibole mineral)
Mineral