Rock Identifier

Category

Metamorphic Or Igneous

Browse metamorphic or igneous specimens identified by the Rock Identifier community.

Learn about Metamorphic Or Igneous in the encyclopedia

Carbonatite

Cordierite Hornfels

Cordierite Hornfels

Metabasalt

Eulysite

Migmatite

Anthracite

Metaquartzite

Slate

Marble

Hornfels

Metarhyolite

Metagabbro

Quartz fragment (Silicon Dioxide (SiO2)) — mineral

Quartz fragment

Silicon Dioxide (SiO2)

Blue Apatite (Ca5(PO4)3(F,Cl,OH)) — mineral

Blue Apatite

Ca5(PO4)3(F,Cl,OH)

Natural Gemstone Cabochons (Ruby, Moonstone, Emerald, Citrine) (Ruby (Al2O3:Cr), Moonstone (KAlSi3O8), Emerald (Be3Al2(SiO3)6:Cr), Citrine (SiO2)) — mineral

Natural Gemstone Cabochons (Ruby, Moonstone, Emerald, Citrine)

Ruby (Al2O3:Cr), Moonstone (KAlSi3O8), Emerald (Be3Al2(SiO3)6:Cr), Citrine (SiO2)

Tumbled blue stone, possibly sodalite or blue quartz (Indeterminate from the photograph; possibilities include sodalite (Na₈Al₆Si₆O₂₄Cl₂) or blue quartz (SiO₂)) — mineral

Tumbled blue stone, possibly sodalite or blue quartz

Indeterminate from the photograph; possibilities include sodalite (Na₈Al₆Si₆O₂₄Cl₂) or blue quartz (SiO₂)

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

Magnetite / Iron Ore

Magnetite (Fe3O4)

Greenstone or Epidote-rich rock (Epidote or Chlorite schist/greenstone) — metamorphic

Greenstone or Epidote-rich rock

Epidote or Chlorite schist/greenstone

Greenschist (Chlorite Schist) — metamorphic

Greenschist

Chlorite Schist

Garnet-bearing metamorphic rock, possibly garnet amphibolite or mica schist (Almandine garnet (Fe₃Al₂Si₃O₁₂) in a mafic, amphibole–feldspar-rich matrix) — metamorphic

Garnet-bearing metamorphic rock, possibly garnet amphibolite or mica schist

Almandine garnet (Fe₃Al₂Si₃O₁₂) in a mafic, amphibole–feldspar-rich matrix

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

Muscovite Mica

KAl2(AlSi3O10)(OH)2

Moonstone (Feldspar) (Orthoclase or Oligoclase (KAlSi3O8)) — mineral

Moonstone (Feldspar)

Orthoclase or Oligoclase (KAlSi3O8)

Garnet (Almandine/Pyrope series) (Silicate mineral (Almandine: Fe3Al2Si3O12; Pyrope: Mg3Al2Si3O12)) — mineral

Garnet (Almandine/Pyrope series)

Silicate mineral (Almandine: Fe3Al2Si3O12; Pyrope: Mg3Al2Si3O12)

Sodalite (Sodalite, Na8(Al6Si6O24)Cl2) — Mineral

Sodalite

Sodalite, Na8(Al6Si6O24)Cl2

Magnetite / Ironstone (Magnetite (Fe3O4)) — mineral

Magnetite / Ironstone

Magnetite (Fe3O4)

Magnetite (Fe3O4 (Iron(II,III) oxide)) — mineral

Magnetite

Fe3O4 (Iron(II,III) oxide)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Raw and Water-worn) (Silicon Dioxide (SiO2)) — mineral

Quartz (Raw and Water-worn)

Silicon Dioxide (SiO2)

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

Milky Quartz with inclusions

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Milky and Smoky variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky and Smoky variety)

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Magnetite (Iron Ore)

Magnetite (Fe3O4)

Garnet in Schist or Pegmatite (Almandine Garnet (Fe3Al2(SiO4)3) in host rock) — metamorphic

Garnet in Schist or Pegmatite

Almandine Garnet (Fe3Al2(SiO4)3) in host rock

Rainbow Moonstone (White Labradorite) (Labradorite (White varieties with Schiller effect), (Na,Ca)(Al,Si)4O8) — gemstone

Rainbow Moonstone (White Labradorite)

Labradorite (White varieties with Schiller effect), (Na,Ca)(Al,Si)4O8

Magnetite (Charnockite Regional Variation) (Magnetite (Fe3O4)) — mineral

Magnetite (Charnockite Regional Variation)

Magnetite (Fe3O4)

White Sapphire (Corundum (Al2O3)) — mineral

White Sapphire

Corundum (Al2O3)

Greenish Metamorphic Rock (likely containing epidote or chlorite) (Metamorphic rock, possibly epidosite or greenstone) — Metamorphic

Greenish Metamorphic Rock (likely containing epidote or chlorite)

Metamorphic rock, possibly epidosite or greenstone

Gneiss (Metamorphic Gneiss) — metamorphic

Gneiss

Metamorphic Gneiss

Likely weathered gneiss or mica-rich schist (Foliated metamorphic rock, probably quartz–feldspar–biotite gneiss/schist) — metamorphic

Likely weathered gneiss or mica-rich schist

Foliated metamorphic rock, probably quartz–feldspar–biotite gneiss/schist

Feldspar (Potassium Feldspar (KAlSi3O8)) — mineral

Feldspar

Potassium Feldspar (KAlSi3O8)

Quartz (Smoky/Brown variety) (Silicon dioxide (SiO2)) — mineral

Quartz (Smoky/Brown variety)

Silicon dioxide (SiO2)

Kfeldspar (Potassium Feldspar) (KAlSi3O8) — mineral

Kfeldspar (Potassium Feldspar)

KAlSi3O8

K-Feldspar (Potassium Feldspar / Pink Feldspar) (KAlSi3O8 (Potassium Aluminum Silicate)) — mineral

K-Feldspar (Potassium Feldspar / Pink Feldspar)

KAlSi3O8 (Potassium Aluminum Silicate)

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

Quartz with Inclusions

Silicon Dioxide (SiO2)

Blue Topaz (Al2SiO4(F,OH)2) — gemstone

Blue Topaz

Al2SiO4(F,OH)2

Potassium Feldspar (Microcline / Orthoclase) (KAlSi3O8) — mineral

Potassium Feldspar (Microcline / Orthoclase)

KAlSi3O8

Moonstone (Orthoclase (KAlSi3O8) or Oligoclase with adularescence) — gemstone

Moonstone

Orthoclase (KAlSi3O8) or Oligoclase with adularescence

Garnet (Silicate mineral group (often Pyrope or Almandine in this color range)) — gemstone

Garnet

Silicate mineral group (often Pyrope or Almandine in this color range)

Agate (SiO2 (Chalcedony/Quartz)) — sedimentary

Agate

SiO2 (Chalcedony/Quartz)

Hematite (Iron Oxide (Fe2O3)) — mineral

Hematite

Iron Oxide (Fe2O3)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz pebble / River stone (SiO2 (Silicon Dioxide)) — mineral

Quartz pebble / River stone

SiO2 (Silicon Dioxide)

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

Pyrite in Matrix (Fool's Gold)

Iron Sulfide (FeS2)