Rock Identifier

Category

Metamorphic And Mineral

Browse metamorphic and mineral specimens identified by the Rock Identifier community.

Learn about Metamorphic And Mineral in the encyclopedia

Metabasalt

Glauconite

Eulysite

Hutcheonite

Halite

Anthracite

Eltyubyuite

Metaquartzite

Metagabbro

Slate

Sperrylite

Paracelsian

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

Rhodonite

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

Rhodonite (Rhodonite (Mn2+SiO3)) — mineral

Rhodonite

Rhodonite (Mn2+SiO3)

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

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Agate

Silicon Dioxide (Chalcedony), SiO2

Banded Gneiss (Banded Gneiss (High-grade Metamorphic Rock)) — metamorphic

Banded Gneiss

Banded Gneiss (High-grade Metamorphic Rock)

Weathered gneiss (Banded gneiss, commonly composed of quartz, feldspar, and mica) — metamorphic

Weathered gneiss

Banded gneiss, commonly composed of quartz, feldspar, and mica

Greenstone (Epidote/Chlorite Rich Rock) (Metabasalt (often contains Epidote Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH))) — metamorphic

Greenstone (Epidote/Chlorite Rich Rock)

Metabasalt (often contains Epidote Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH))

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

Quartz in Greenstone

Metamorphic rock with quartz vein (SiO2 / mixed silicates)

Greenstone (Metabasalt / Greenschist) — metamorphic

Greenstone

Metabasalt / Greenschist

Quartz pebble (Silicon dioxide (SiO2)) — mineral

Quartz pebble

Silicon dioxide (SiO2)

Foliated metamorphic rock, likely gneiss or schist (Quartz–feldspar–mica gneiss/schist; exact identification requires petrographic examination) — metamorphic

Foliated metamorphic rock, likely gneiss or schist

Quartz–feldspar–mica gneiss/schist; exact identification requires petrographic examination

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

Milky quartz (quartzite possible)

Quartz, silicon dioxide (SiO₂)

Quartzite River Pebble (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite River Pebble

Metamorphic Quartzite (SiO2)

Arsenopyrite (Arsenopyrite (FeAsS)) — mineral

Arsenopyrite

Arsenopyrite (FeAsS)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Gneiss (Gneissic Metamorphic Rock) — metamorphic

Gneiss

Gneissic Metamorphic Rock

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Likely garnet crystal (rough fragment) (Garnet group; possibly almandine, Fe₃Al₂(SiO₄)₃) — mineral

Likely garnet crystal (rough fragment)

Garnet group; possibly almandine, Fe₃Al₂(SiO₄)₃

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

Rhodonite

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

Almandine Garnet (Almandine (Fe3Al2(SiO4)3)) — metamorphic

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Muscovite Mica (Muscovite (Potassium Aluminum Silicate Hydroxide Fluoride), KAl2(AlSi3O10)(OH,F)2) — mineral

Muscovite Mica

Muscovite (Potassium Aluminum Silicate Hydroxide Fluoride), KAl2(AlSi3O10)(OH,F)2

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

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Tumbled garnet (likely almandine) (Almandine garnet, iron-aluminum nesosilicate (Fe₃Al₂Si₃O₁₂)) — gemstone

Tumbled garnet (likely almandine)

Almandine garnet, iron-aluminum nesosilicate (Fe₃Al₂Si₃O₁₂)

Gneiss (Foliated Metamorphic Gneiss) — metamorphic

Gneiss

Foliated Metamorphic Gneiss

Gneiss (Foliated Metamorphic Rock) — metamorphic

Gneiss

Foliated Metamorphic Rock

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

Rhodochrosite (Manganese carbonate (MnCO3)) — mineral

Rhodochrosite

Manganese carbonate (MnCO3)

White Calcite (Calcium Carbonate (CaCO3)) — mineral

White Calcite

Calcium Carbonate (CaCO3)

Epidote (Unakite-related) (Epidote (Ca2(Al,Fe)3(SiO4)3(OH))) — metamorphic

Epidote (Unakite-related)

Epidote (Ca2(Al,Fe)3(SiO4)3(OH))

Greenstone (or Greywacke/Metasediment Pebble) (Metamorphosed Mafic Rock / Chlorite Schist) — metamorphic

Greenstone (or Greywacke/Metasediment Pebble)

Metamorphosed Mafic Rock / Chlorite Schist

Small rounded stone or mineral fragment (Indeterminate; likely a common quartz- or feldspar-bearing silicate fragment) — mineral

Small rounded stone or mineral fragment

Indeterminate; likely a common quartz- or feldspar-bearing silicate fragment

Polished greenstone (likely serpentine) (Serpentinite; chiefly serpentine-group minerals, Mg₃Si₂O₅(OH)₄) — metamorphic

Polished greenstone (likely serpentine)

Serpentinite; chiefly serpentine-group minerals, Mg₃Si₂O₅(OH)₄

Polished ruby-in-fuchsite (probable) (Corundum (Al₂O₃) with green fuchsite mica (Cr-muscovite), possibly zoisite/amphibole) — metamorphic

Polished ruby-in-fuchsite (probable)

Corundum (Al₂O₃) with green fuchsite mica (Cr-muscovite), possibly zoisite/amphibole

Banded Gneiss Pebble (Banded Gneiss) — metamorphic

Banded Gneiss Pebble

Banded Gneiss

Greenschist (Greenstone River Pebble) (Greenschist (Chlorite Schist)) — metamorphic

Greenschist (Greenstone River Pebble)

Greenschist (Chlorite Schist)

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

Mica Schist with Quartz

Mica-Quartz Schist (Muscovite subclass)

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

White Quartz Pebble

Silicon Dioxide (SiO2)