Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Category
Mineral (Metamorphic Pseudomorph)
Browse mineral (metamorphic pseudomorph) specimens identified by the Rock Identifier community.
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Rhodonite
Manganese silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Biotite or Phlogopite Mica
K(Mg,Fe)3(AlSi3O10)(F,OH)2
mineral
Quartz vein fragment
Quartz, silicon dioxide (SiO₂), likely milky to translucent quartz with iron-oxide or clay inclusions
mineral
Likely quartz-rich stone (possibly milky quartz or quartzite)
Quartz, silicon dioxide (SiO₂), or quartzite if interlocking grains are present
mineral
River Stone (possibly Gneiss)
Metamorphic Gneiss
metamorphic
Greenschist
Greenschist facies metamorphic rock; commonly chlorite–actinolite–epidote schist
metamorphic
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Garnet (Almandine variety)
Almandine Garnet (Fe3Al2(SiO4)3)
mineral
Magnetite (Lodestone variant potential)
Magnetite (Fe3O4)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Likely dark green-gray metamorphic pebble
Indeterminate; possibly chlorite schist, serpentinite, or amphibolite
metamorphic
Banded gneiss
Quartz–feldspar gneiss, possibly biotite-bearing; exact identification requires testing
metamorphic
Epidote
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
mineral
Sunstone / Peach Moonstone (Feldspar variety)
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Muscovite Mica
KAl2(AlSi3O10)(OH)2
mineral
Banded gneiss
Foliated silicate rock, typically quartz–feldspar–mica gneiss
metamorphic
Ruby (Corundum)
Aluminum oxide (Al2O3) with Chromium traces
mineral
Prehnite
Prehnite, Ca2Al2Si3O10(OH)2
mineral
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2) with Limonite/Goethite
mineral
Polished Hematite Tower
Hematite (Fe2O3)
mineral
Banded Metamorphic Rock
Gneiss or Schist
metamorphic
Green Aventurine
SiO2
mineral
Gneiss (with Mica and Quartz)
Gneissic Metamorphic Rock
metamorphic
Fuchsite
Fuchsite (a variety of Muscovite mica, K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Weathered foliated metamorphic rock, likely schist or phyllite
Micaceous quartz–feldspar schist/phyllite; exact identification requires microscopy or testing
metamorphic
Gneissic Schist
Gneiss-schist (Metamorphic rock)
metamorphic
Pyrite
Iron sulfide (FeS2)
mineral
Biotite (Black Mica)
Biotite - K(Mg,Fe)3(AlSi3O10)(F,OH)2
mineral
Blue Quartz (Blue Aventurine)
Silicon Dioxide with inclusions (SiO2)
mineral
Tumbled Moonstone
Feldspar (Orthoclase/Albite), KAlSi3O8
mineral
Chalcopyrite
Copper Iron Sulfide (CuFeS2)
mineral
Magnetic Sand Grain / Magnetite Pellet
Magnetite (Fe3O4)
mineral
Schist with Quartz Veins
Schist with Quartz (SiO2)
metamorphic
Muscovite Mica
Muscovite (Potassium Aluminum Silicate) - KAl2(AlSi3O10)(F,OH)2
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Quartz with Schist Matrix
Crystalline Silicon Dioxide (SiO2) in micaceous schist
metamorphic
Eclogite
Eclogite (Omphacite + Pyrope)
metamorphic
Granitic Pegmatite
Granitic Pegmatite (principally Quartz, Potassium Feldspar, and Mica)
igneous
Gneiss with Quartz Vein
Metamorphic Gneiss with Quartz (SiO2) and Feldspar Injection
metamorphic