Rock Identifier

Category

Metamorphic

Browse metamorphic specimens identified by the Rock Identifier community.

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Muscovite Mica (in Quartz matrix) (Potassium aluminum silicate hydroxide fluoride (KAl2(AlSi3O10)(F,OH)2)) — mineral

Muscovite Mica (in Quartz matrix)

Potassium aluminum silicate hydroxide fluoride (KAl2(AlSi3O10)(F,OH)2)

Milky Quartz with Iron Staining (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz with Iron Staining

Quartz (Silicon Dioxide, SiO2)

Quartz (Milky/Common) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Milky Quartz (Crystalline Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Muscovite (Mica) (Muscovite - KAl2(AlSi3O10)(OH)2) — Mineral

Muscovite (Mica)

Muscovite - KAl2(AlSi3O10)(OH)2

Muscovite Mica (with Schist) (Muscovite - KAl2(AlSi3O10)(OH)2) — metamorphic

Muscovite Mica (with Schist)

Muscovite - KAl2(AlSi3O10)(OH)2

Epidote in Matrix (Dragon Stone variant) (Epidote with Quartz/Feldspar (Ca2(Al,Fe)3(SiO4)3(OH))) — metamorphic

Epidote in Matrix (Dragon Stone variant)

Epidote with Quartz/Feldspar (Ca2(Al,Fe)3(SiO4)3(OH))

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

White Quartz (Milky Quartz) (Silicon Dioxide (SiO2)) — mineral

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Epidote (with Quartz and Feldspar) (Epidote (unakalite/unite), Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH)) — metamorphic

Epidote (with Quartz and Feldspar)

Epidote (unakalite/unite), Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH)

Quartz with Chlorite or Hornblende inclusions (Silicon dioxide (SiO2) with phyllosilicate or amphibole inclusions) — metamorphic

Quartz with Chlorite or Hornblende inclusions

Silicon dioxide (SiO2) with phyllosilicate or amphibole inclusions

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Garnet and Quartz (Pyrope or Almandine (Red Garnets) and Quartz (Center Stone)) — mineral

Garnet and Quartz

Pyrope or Almandine (Red Garnets) and Quartz (Center Stone)

Quartzite River Rock (Quartzite (SiO2)) — metamorphic

Quartzite River Rock

Quartzite (SiO2)

Biotite Mica (Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2)) — mineral

Biotite Mica

Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2)

Quartz (Milky Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Soapstone / Steatite (Steatite (primarily Talc, Mg3Si4O10(OH)2)) — metamorphic

Soapstone / Steatite

Steatite (primarily Talc, Mg3Si4O10(OH)2)

Schist (Mica Schist (predominantly Muscovite/Biotite)) — metamorphic

Schist

Mica Schist (predominantly Muscovite/Biotite)

Mica Schist (Mica Schist (primarily Muscovite and Biotite KAl2(AlSi3O10)(OH)2)) — metamorphic

Mica Schist

Mica Schist (primarily Muscovite and Biotite KAl2(AlSi3O10)(OH)2)

Gneiss (specifically Amphibolite Gneiss) (Gneiss) — metamorphic

Gneiss (specifically Amphibolite Gneiss)

Gneiss

Red Garnet (Pyrope or Almandine) (Garnet Group (A3B2(SiO4)3)) — mineral

Red Garnet (Pyrope or Almandine)

Garnet Group (A3B2(SiO4)3)

Unakite (Unakite (Epidote-Feldspar rock)) — Metamorphic rock

Unakite

Unakite (Epidote-Feldspar rock)

Metamorphic rock

Black Star Diopside (beads) (Diopside (CaMgSi2O6) - a member of the pyroxene group) — Mineral

Black Star Diopside (beads)

Diopside (CaMgSi2O6) - a member of the pyroxene group

Micaceous Schist (Mica Schist (primarily Muscovite or Biotite KAl2(AlSi3O10)(OH)2)) — metamorphic

Micaceous Schist

Mica Schist (primarily Muscovite or Biotite KAl2(AlSi3O10)(OH)2)

Greenschist (Chlorite schist) — metamorphic

Greenschist

Chlorite schist

Biotite Schist (Biotite-rich Schist (K(Mg,Fe)3AlSi3O10(F,OH)2)) — metamorphic

Biotite Schist

Biotite-rich Schist (K(Mg,Fe)3AlSi3O10(F,OH)2)

Garnet Schist (Almandine-Garnet Mica Schist) — metamorphic

Garnet Schist

Almandine-Garnet Mica Schist

Greenschist (Greenstone) (Greenschist) — metamorphic

Greenschist (Greenstone)

Greenschist

Amphibolite with Hornblende (Amphibole-rich Metamorphic Rock (Ca2(Mg,Fe)5Si8O22(OH)2)) — metamorphic

Amphibolite with Hornblende

Amphibole-rich Metamorphic Rock (Ca2(Mg,Fe)5Si8O22(OH)2)

Aquamarine with Sunstone (Aquamarine (Be3Al2Si6O18), Sunstone (Na,Ca)Al(Si,Al)Si2O8) — Mineral

Aquamarine with Sunstone

Aquamarine (Be3Al2Si6O18), Sunstone (Na,Ca)Al(Si,Al)Si2O8

Jade (likely Nephrite Jade based on appearance) (Nephrite (a variety of actinolite, Ca2(Mg,Fe)5Si8O22(OH)2)) — Mineral

Jade (likely Nephrite Jade based on appearance)

Nephrite (a variety of actinolite, Ca2(Mg,Fe)5Si8O22(OH)2)

Pyrite (Iron Pyrite (FeS₂)) — Mineral

Pyrite

Iron Pyrite (FeS₂)

Green Tourmaline (Verdelite) (Tourmaline Group; often Elbaite (Na(Li,Al)3Al6(BO3)3Si6O18(OH)4) or Dravite (NaMg3Al6(BO3)3Si6O18(OH)4)) — Mineral

Green Tourmaline (Verdelite)

Tourmaline Group; often Elbaite (Na(Li,Al)3Al6(BO3)3Si6O18(OH)4) or Dravite (NaMg3Al6(BO3)3Si6O18(OH)4)

Green Aventurine (Quartz (Aventurine variety) - SiO₂ with Fuchsite inclusions) — Mineral

Green Aventurine

Quartz (Aventurine variety) - SiO₂ with Fuchsite inclusions

Yellow Quartzite (River Pebble) (Crystalline Quartz (SiO2)) — metamorphic

Yellow Quartzite (River Pebble)

Crystalline Quartz (SiO2)

River Stone (Granitic Gneiss) (Foliated Granitic Gneiss) — metamorphic

River Stone (Granitic Gneiss)

Foliated Granitic Gneiss

Blue Quartzite (Blue Aventurine / Dumortierite Quartz) (Quartzite with inclusions (SiO2 with AlAl4BSi3O18)) — metamorphic

Blue Quartzite (Blue Aventurine / Dumortierite Quartz)

Quartzite with inclusions (SiO2 with AlAl4BSi3O18)

Quartzite River Pebble (Quartzite (primarily Silicon Dioxide, SiO2)) — metamorphic

Quartzite River Pebble

Quartzite (primarily Silicon Dioxide, SiO2)

Schist (Mica Schist (contains muscovite/biotite and quartz)) — metamorphic

Schist

Mica Schist (contains muscovite/biotite and quartz)

Rhodonite (Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3