Rock Identifier

Category

Metamorphic Mineral

Browse metamorphic mineral specimens identified by the Rock Identifier community.

Mica Schist (Schist (Crystalline metamorphic rock)) — metamorphic

Mica Schist

Schist (Crystalline metamorphic rock)

Quartz (Drusy/Crystalline) (Silicon Dioxide (SiO2)) — mineral

Quartz (Drusy/Crystalline)

Silicon Dioxide (SiO2)

Beryl (likely Emerald or Aquamarine in matrix) (Beryllium aluminum silicate (Be3Al2Si6O18)) — mineral

Beryl (likely Emerald or Aquamarine in matrix)

Beryllium aluminum silicate (Be3Al2Si6O18)

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

Rhodonite

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

Mica Schist (Foliated Metamorphic Rock (rich in Muscovite or Biotite)) — metamorphic

Mica Schist

Foliated Metamorphic Rock (rich in Muscovite or Biotite)

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

Soapstone

Steatite (composed primarily of Talc, Mg3Si4O10(OH)2)

Epidosite (Epidote-rich rock) (Epidotalite (primarily Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH))) — metamorphic

Epidosite (Epidote-rich rock)

Epidotalite (primarily Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH))

Gneiss (Gneiss (high-grade metamorphic rock)) — metamorphic

Gneiss

Gneiss (high-grade metamorphic rock)

Rhodonite (Rhodonite (MnSiO3)) — Mineral

Rhodonite

Rhodonite (MnSiO3)

Aquamarine (Beryl (Be₃Al₂Si‑₆O₁₈)) — mineral

Aquamarine

Beryl (Be₃Al₂Si‑₆O₁₈)

Orthoclase Feldspar (Orthoclase (KAlSi₃O₈)) — mineral

Orthoclase Feldspar

Orthoclase (KAlSi₃O₈)

Pyrite in Quartz (Iron Sulfide (FeS2) in Silicon Dioxide (SiO2)) — Mineral

Pyrite in Quartz

Iron Sulfide (FeS2) in Silicon Dioxide (SiO2)

Ruby Zoisite (Anyolite (Composition of Green Zoisite, Black Tschermakite, and Red Corundum)) — metamorphic

Ruby Zoisite

Anyolite (Composition of Green Zoisite, Black Tschermakite, and Red Corundum)

Schist (Schist (various mineral compositions)) — Metamorphic

Schist

Schist (various mineral compositions)

Schist (Micaceous) (Mica Schist) — metamorphic

Schist (Micaceous)

Mica Schist

Blue Quartz (Aventurine) (Silicon Dioxide (SiO2) with fibrous inclusions (commonly Dumortierite)) — mineral

Blue Quartz (Aventurine)

Silicon Dioxide (SiO2) with fibrous inclusions (commonly Dumortierite)

Gneiss (Metamorphic Rock) (Gneiss) — metamorphic

Gneiss (Metamorphic Rock)

Gneiss

Magnetite Orthorthotropic Rock (Magnetite (Fe3O4)) — mineral

Magnetite Orthorthotropic Rock

Magnetite (Fe3O4)

Mica (Phlogopite or Biotite group (KMg3(AlSi3O10)(F,OH)2 / K(Mg,Fe)3AlSi3O10(OH)2)) — mineral

Mica

Phlogopite or Biotite group (KMg3(AlSi3O10)(F,OH)2 / K(Mg,Fe)3AlSi3O10(OH)2)

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

Rhodonite

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

Green Kyanite (Kyanite (Al2SiO5)) — mineral

Green Kyanite

Kyanite (Al2SiO5)

Rhodochrosite (Manganese carbonate (MnCO3)) — mineral

Rhodochrosite

Manganese carbonate (MnCO3)

Schist (Schist (metamorphic rock)) — metamorphic

Schist

Schist (metamorphic rock)

Banded Gneiss (Gneiss (typically quartz, feldspar, mica, amphibole composition)) — metamorphic

Banded Gneiss

Gneiss (typically quartz, feldspar, mica, amphibole composition)

Arsenopyrite in Quartz Matrix (Arsenopyrite (FeAsS) with Quartz (SiO2)) — mineral

Arsenopyrite in Quartz Matrix

Arsenopyrite (FeAsS) with Quartz (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Biotite Mica

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

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

Mica Schist

Mica Schist (predominantly Muscovite or Biotite)

Milky Quartz with Iron Inclusions (Silicon Dioxide (SiO2)) — mineral

Milky Quartz with Iron Inclusions

Silicon Dioxide (SiO2)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Citrine or Yellow Quartz (Silicon Dioxide (SiO2) with iron impurities) — mineral

Citrine or Yellow Quartz

Silicon Dioxide (SiO2) with iron impurities

Moonstone (Orthoclase Feldspar (KAlSi3O8)) — mineral

Moonstone

Orthoclase Feldspar (KAlSi3O8)

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

Biotite (Black Mica)

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

Pyrite (Iron Pyrites) (Iron Sulfide (FeS2)) — mineral

Pyrite (Iron Pyrites)

Iron Sulfide (FeS2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Pyrite (Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Pyromorphite on Epidote (Pyromorphite [Pb5(PO4)3Cl] and Epidote [Ca2(Al2,Fe3+)(SiO4)3(OH)]) — mineral

Pyromorphite on Epidote

Pyromorphite [Pb5(PO4)3Cl] and Epidote [Ca2(Al2,Fe3+)(SiO4)3(OH)]

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

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

Rhodonite

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

Hypersthene (Hypersthene (Magnesium Iron Silicate - (Mg,Fe)SiO3)) — mineral

Hypersthene

Hypersthene (Magnesium Iron Silicate - (Mg,Fe)SiO3)

Sodalite (Na8(Al6Si6O24)Cl2) — mineral

Sodalite

Na8(Al6Si6O24)Cl2