Rock Identifier

Category

Metamorphic Mineral

Browse metamorphic mineral specimens identified by the Rock Identifier community.

Learn about Metamorphic Mineral in the encyclopedia

Metagabbro

Metabasalt

Glauconite

Eulysite

Anthracite

Hutcheonite

Halite

Eltyubyuite

Metaquartzite

Slate

Sperrylite

Paracelsian

Greenstone / Greenschist (Greenschist facies metamorphic rock (composed primarily of chlorite, actinolite, and epidote)) — metamorphic

Greenstone / Greenschist

Greenschist facies metamorphic rock (composed primarily of chlorite, actinolite, and epidote)

Glaucophane / Blue Schist (Glaucophane (Na2(Mg3Al2)Si8O22(OH)2)) — metamorphic

Glaucophane / Blue Schist

Glaucophane (Na2(Mg3Al2)Si8O22(OH)2)

Likely clear quartz pebble or glassy quartz fragment (Quartz (silicon dioxide, SiO₂)) — mineral

Likely clear quartz pebble or glassy quartz fragment

Quartz (silicon dioxide, SiO₂)

Banded Gneiss Pebble (Banded Gneiss) — metamorphic

Banded Gneiss Pebble

Banded Gneiss

Small white mineral fragment (Indeterminate; possibly quartz, calcite, or feldspar) — mineral

Small white mineral fragment

Indeterminate; possibly quartz, calcite, or feldspar

Tumbled quartz-rich pebble (Microcrystalline quartz (SiO₂), possibly milky quartz or chalcedony) — mineral

Tumbled quartz-rich pebble

Microcrystalline quartz (SiO₂), possibly milky quartz or chalcedony

Milky quartz (iron-stained quartz) (Quartz, silicon dioxide (SiO₂)) — mineral

Milky quartz (iron-stained quartz)

Quartz, silicon dioxide (SiO₂)

Epidosite with Quartz (Unakite-variant or Jasper) (Epidotized Metasomatite) — metamorphic

Epidosite with Quartz (Unakite-variant or Jasper)

Epidotized Metasomatite

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Tumbled dark green beach pebble (Likely serpentinite or altered basalt; exact identification requires testing) — metamorphic

Tumbled dark green beach pebble

Likely serpentinite or altered basalt; exact identification requires testing

Blue Quartz (Silicon Dioxide (SiO2) with inclusions) — mineral

Blue Quartz

Silicon Dioxide (SiO2) with inclusions

Fuchsite (Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)) — mineral

Fuchsite

Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)

Greenschist (Greenschist (chlorite schist)) — metamorphic

Greenschist

Greenschist (chlorite schist)

Mica Schist with Quartz (Mica Schist (primarily Muscovite or Biotite with Quartz)) — metamorphic

Mica Schist with Quartz

Mica Schist (primarily Muscovite or Biotite with Quartz)

Greenschist (Greenschist) — metamorphic

Greenschist

Greenschist

Greenschist (Greenschist (Chlorite Schist)) — metamorphic

Greenschist

Greenschist (Chlorite Schist)

Greenschist (Greenstone) (Greenschist (Metamorphic rock containing chlorite, actinolite, and epidote)) — metamorphic

Greenschist (Greenstone)

Greenschist (Metamorphic rock containing chlorite, actinolite, and epidote)

Magnetite / Iron Ore (Magnetite (Fe3O4)) — mineral

Magnetite / Iron Ore

Magnetite (Fe3O4)

Green Tourmaline (Verdelite) (Elbaite (Na(Li,Al)3Al6(BO3)3Si6O18(OH)4)) — gemstone

Green Tourmaline (Verdelite)

Elbaite (Na(Li,Al)3Al6(BO3)3Si6O18(OH)4)

Greenschist (Greenstone) (Chlorite Schist / Greenschist Facies Rock) — metamorphic

Greenschist (Greenstone)

Chlorite Schist / Greenschist Facies Rock

Small blue-green mineral fragment, possibly apatite or beryl (Tentatively fluorapatite, Ca₅(PO₄)₃(F,Cl,OH), or beryl, Be₃Al₂Si₆O₁₈) — mineral

Small blue-green mineral fragment, possibly apatite or beryl

Tentatively fluorapatite, Ca₅(PO₄)₃(F,Cl,OH), or beryl, Be₃Al₂Si₆O₁₈

Gossan (Iron Hat) (Goethite-Hematite rich weathered rock (Fe-hydroxides)) — sedimentary

Gossan (Iron Hat)

Goethite-Hematite rich weathered rock (Fe-hydroxides)

Schist (Crystalline Metamorphic Rock (Schistose)) — metamorphic

Schist

Crystalline Metamorphic Rock (Schistose)

Slate (Foliated Metamorphic Rock) — metamorphic

Slate

Foliated Metamorphic Rock

Muscovite (Muscovite (KAl2(AlSi3O10)(OH)2)) — mineral

Muscovite

Muscovite (KAl2(AlSi3O10)(OH)2)

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

Rhodonite

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

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

Rhodonite

Rhodonite (Mn,Fe,Mg,Ca)SiO3

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Likely metamorphic schist or gneiss (Mica-rich quartz-feldspar schist/gneiss; exact identification requires testing) — metamorphic

Likely metamorphic schist or gneiss

Mica-rich quartz-feldspar schist/gneiss; exact identification requires testing

Milky quartz (Quartz (silicon dioxide, SiO₂)) — mineral

Milky quartz

Quartz (silicon dioxide, SiO₂)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Gneiss (River Cobble) (Gneiss) — metamorphic

Gneiss (River Cobble)

Gneiss

Quartz in Greenstone (Metamorphic rock with quartz vein (SiO2 / mixed silicates)) — metamorphic

Quartz in Greenstone

Metamorphic rock with quartz vein (SiO2 / mixed silicates)

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

Biotite on Matrix

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

Schist (Schist (Crystalline metamorphic rock)) — metamorphic

Schist

Schist (Crystalline metamorphic rock)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Agate (Silicon Dioxide (Chalcedony), SiO2) — sedimentary

Agate

Silicon Dioxide (Chalcedony), SiO2

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Epidote (Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))) — metamorphic

Epidote

Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

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

Rhodonite

(Mn,Fe,Mg,Ca)SiO3

Mica Schist with Quartz (Mica-Quartz Schist (Muscovite subclass)) — metamorphic

Mica Schist with Quartz

Mica-Quartz Schist (Muscovite subclass)

Tiger's Eye (Tiger's eye (Pseudomorph of Quartz after Crocidolite), SiO2) — metamorphic

Tiger's Eye

Tiger's eye (Pseudomorph of Quartz after Crocidolite), SiO2