Rock Identifier

Category

Metamorphic And Igneous

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

Learn about Metamorphic And 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)

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

Milky quartz

Quartz (silicon dioxide, SiO₂)

Greenish Feldspathic Rock / Epidote Granite (Unakite-type or Epidote-bearing rock) (Epidotized Metamorphic/Igneous Rock) — metamorphic

Greenish Feldspathic Rock / Epidote Granite (Unakite-type or Epidote-bearing rock)

Epidotized Metamorphic/Igneous Rock

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

Sodalite

Sodalite, Na8(Al6Si6O24)Cl2

Likely garnet crystal (Garnet-group silicate; species cannot be determined from the image) — mineral

Likely garnet crystal

Garnet-group silicate; species cannot be determined from the image

Gneiss (Metamorphic Gneiss) — metamorphic

Gneiss

Metamorphic Gneiss

Weathered rock fragment (likely granite or granitic gneiss) (Undetermined felsic rock; possibly quartz–feldspar granite) — igneous

Weathered rock fragment (likely granite or granitic gneiss)

Undetermined felsic rock; possibly quartz–feldspar granite

Fossiliferous limestone fragment (Calcitic limestone; mainly calcium carbonate (CaCO₃), possibly with shell or coral debris) — sedimentary

Fossiliferous limestone fragment

Calcitic limestone; mainly calcium carbonate (CaCO₃), possibly with shell or coral debris

Foliated metamorphic rock, likely mica schist (Mica schist, mainly quartz–feldspar–mica assemblage) — metamorphic

Foliated metamorphic rock, likely mica schist

Mica schist, mainly quartz–feldspar–mica assemblage

Magnetite / Ironstone (Magnetite (Fe3O4)) — mineral

Magnetite / Ironstone

Magnetite (Fe3O4)

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

Greenstone or Epidote-rich rock

Epidote or Chlorite schist/greenstone

Venetian Gold Granite (Phaneritic Felsic Igneous Rock (Granite)) — igneous

Venetian Gold Granite

Phaneritic Felsic Igneous Rock (Granite)

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)

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

Magnetite (Iron Ore)

Magnetite (Fe3O4)

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

Milky quartz

Quartz, silicon dioxide (SiO₂)

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)

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

Magnetite

Fe3O4 (Iron(II,III) oxide)

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)

Amber (likely a small rough amber piece) (Fossilized plant resin; amber is an organic mineraloid, not a crystalline mineral) — gemstone

Amber (likely a small rough amber piece)

Fossilized plant resin; amber is an organic mineraloid, not a crystalline mineral

Banded Gneiss (Metamorphic Gneiss) — metamorphic

Banded Gneiss

Metamorphic Gneiss

Citrine or Yellow Sapphire (Quartz (SiO2) or Corundum (Al2O3)) — gemstone

Citrine or Yellow Sapphire

Quartz (SiO2) or Corundum (Al2O3)

Uncertain small stone; possibly weathered quartz-bearing rock (Indeterminate from image; candidate materials include quartz-rich pebble or altered silicate rock) — mineral

Uncertain small stone; possibly weathered quartz-bearing rock

Indeterminate from image; candidate materials include quartz-rich pebble or altered silicate rock

Feldspar (Potassium Feldspar (KAlSi3O8)) — mineral

Feldspar

Potassium Feldspar (KAlSi3O8)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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)

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

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

Quartz pebble / River stone

SiO2 (Silicon Dioxide)