Green Slate or Metamorphic Rock with Moss/Lichen
Metamorphic rock / Phyllite or Slate variant
metamorphic
Category
Metamorphic Mineral
Browse metamorphic mineral specimens identified by the Rock Identifier community.
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Likely biotite-bearing schist
Mica schist, probably biotite-rich; exact identification is uncertain from the photo
metamorphic
Schist
Mica Schist (Foliated Metamorphic Rock)
metamorphic
Rounded gray metamorphic pebble, likely quartzite or gneiss
Quartzite (quartz-rich rock) or fine-grained gneiss; exact identification requires testing
metamorphic
Small metallic-looking rock fragment
Uncertain; possibly galena-bearing ore or mica-rich schist
mineral
Gneiss (Metamorphic Pebble)
Gneiss (SiO2-rich metamorphic rock)
metamorphic
Gneiss
Metamorphic Gneiss (High-grade regional metamorphism)
metamorphic
Pink Quartz
Silicon Dioxide (Quartz), SiO2
mineral
Mica
Mica group (often Muscovite or Biotite)
mineral
Polished Stone Pendant (Identity Unclear)
Unknown (Possibly Jasper/Agate/Quartz mixture)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Yellow Sapphire or Citrine
Al2O3 (Corundum) or SiO2 (Quartz)
mineral
Green Tourmaline
Elbaite (part of Tourmaline group), Na(Li1.5Al1.5)Al6Si6O18(BO3)3(OH)4
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Iron-stained garnet-bearing rock, possibly almandine garnet
Garnet-group silicate, likely almandine (Fe₃Al₂Si₃O₁₂), in a quartz–iron-oxide matrix
mineral
Rhodonite
Rhodonite (Mn,Fe,Mg,Ca)SiO3
mineral
Morganite (Pink Beryl)
Beryl (Be₃Al₂Si₆O₁₈:Mn)
gemstone
Slate
Slate; fine-grained metamorphosed shale, commonly quartz–muscovite/chlorite rich
metamorphic
Greenschist
Chlorite schist
metamorphic
Almandine garnet crystal
Almandine, an iron-aluminum garnet; ideal formula Fe₃Al₂(SiO₄)₃
mineral
Schist
Schist
Metamorphic
Magnetite (Lodestone variant potential)
Magnetite (Fe3O4)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Almandine Garnet in Schist
Almandine Garnet (Fe3Al2(SiO4)3) in Mica Schist
metamorphic
Mica Schist
Mica Schist (primarily Muscovite or Biotite sheet silicates)
metamorphic
Garnet (Almandine variety)
Almandine Garnet (Fe3Al2(SiO4)3)
mineral
Banded gneiss
Gneiss, likely biotite–quartz–feldspar gneiss
metamorphic
Epidote
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
mineral
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2) with Limonite/Goethite
mineral
Polished Hematite Tower
Hematite (Fe2O3)
mineral
Greenstone pebble
Greenschist-facies mafic rock, commonly derived from basalt; likely rich in chlorite, actinolite, and epidote
metamorphic
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Amphibolite (likely)
Amphibolite, chiefly hornblende and plagioclase feldspar
metamorphic
Almandine Garnet
Almandine - Fe3Al2(SiO4)3
mineral
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
mineral
Rhodonite
Rhodonite (MnSiO₃), a manganese inosilicate
mineral
Muscovite mica
Muscovite, KAl₂(AlSi₃O₁₀)(OH)₂
mineral
Black Tourmaline
Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)
Mineral
Chalcopyrite (Peacock Ore)
Chalcopyrite (CuFeS2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Tiger's Eye
Quartz pseudomorph after crocidolite (SiO2)
gemstone