Rock Identifier

Category

Metamorphic Or Igneous (Context Dependent)

Browse metamorphic or igneous (context dependent) specimens identified by the Rock Identifier community.

Learn about Metamorphic Or Igneous (Context Dependent) in the encyclopedia

Carbonatite

Cordierite Hornfels

Cordierite Hornfels

Metabasalt

Eulysite

Migmatite

Anthracite

Hornfels

Metaquartzite

Slate

Marble

Metarhyolite

Metagabbro

Greenstone (Metabasalt / Greenstone (low-grade metamorphic rock)) — metamorphic

Greenstone

Metabasalt / Greenstone (low-grade metamorphic rock)

Ruby in Zoisite (Anyolite (composite of Corundum [Al2O3] and Zoisite [Ca2Al3(SiO4)(Si2O7)O(OH)])) — metamorphic

Ruby in Zoisite

Anyolite (composite of Corundum [Al2O3] and Zoisite [Ca2Al3(SiO4)(Si2O7)O(OH)])

Serpentine (Serpentinite) (Serpentine group ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Fe)2O5(OH)4)) — metamorphic

Serpentine (Serpentinite)

Serpentine group ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Fe)2O5(OH)4)

Unakite (Epidotized Granite) — metamorphic

Unakite

Epidotized Granite

Serpentinite (Serpentinite (composed primarily of Serpentine group minerals, Mg3Si2O5(OH)4)) — metamorphic

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals, Mg3Si2O5(OH)4)

Diorite (Gneissic) (Diorite with possible metamorphic foliation) — igneous

Diorite (Gneissic)

Diorite with possible metamorphic foliation

Chrysotile Serpentine (Asbestos in Matrix) (Chrysotile Mg3Si2O5(OH)4) — metamorphic

Chrysotile Serpentine (Asbestos in Matrix)

Chrysotile Mg3Si2O5(OH)4

Greenstone / Greenschist (Greenschist facies metamorphic rock) — metamorphic

Greenstone / Greenschist

Greenschist facies metamorphic rock

Gneiss (High-grade Metamorphic Gneiss) — metamorphic

Gneiss

High-grade Metamorphic Gneiss

Gneiss (Metamorphic Gneiss (High-grade regional metamorphism)) — metamorphic

Gneiss

Metamorphic Gneiss (High-grade regional metamorphism)

Epidote in Matrix (Dragon Stone variant) (Epidote with Quartz/Feldspar (Ca2(Al,Fe)3(SiO4)3(OH))) — metamorphic

Epidote in Matrix (Dragon Stone variant)

Epidote with Quartz/Feldspar (Ca2(Al,Fe)3(SiO4)3(OH))

Greenschist (Chlorite schist (Metamorphic rock dominated by chlorite, epidote, and actinolite)) — metamorphic

Greenschist

Chlorite schist (Metamorphic rock dominated by chlorite, epidote, and actinolite)

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

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

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

Biotite Mica

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

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

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Orange Quartz (Citrine Quartz) (Silicon Dioxide (SiO2)) — mineral

Orange Quartz (Citrine Quartz)

Silicon Dioxide (SiO2)

Milky Quartz (Quartz (Silicon Dioxide - SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Quartz (Silicon Dioxide (SiO2)) — Mineral

Quartz

Silicon Dioxide (SiO2)

Garnet (Garnet Group (often Pyrope or Almandine); X3Y2(SiO4)3) — mineral

Garnet

Garnet Group (often Pyrope or Almandine); X3Y2(SiO4)3

Orthoclase Feldspar (Potassium aluminum silicate (KAlSi3O8)) — mineral

Orthoclase Feldspar

Potassium aluminum silicate (KAlSi3O8)

Greenschist (containing Epidote and Quartz) (Greenschist (Epidote-Chlorite-Actinolite Schist)) — metamorphic

Greenschist (containing Epidote and Quartz)

Greenschist (Epidote-Chlorite-Actinolite Schist)

Gneiss (Metamorphic Rock) (Gneiss) — metamorphic

Gneiss (Metamorphic Rock)

Gneiss

Tumbled dark gray stone, likely basalt (Basalt; fine-grained mafic volcanic rock composed mainly of plagioclase feldspar and pyroxene, commonly with olivine) — igneous

Tumbled dark gray stone, likely basalt

Basalt; fine-grained mafic volcanic rock composed mainly of plagioclase feldspar and pyroxene, commonly with olivine

Greenschist (Chlorite schist) — metamorphic

Greenschist

Chlorite schist

Greenstone / Epidosite (Epidosite (primary minerals: Epidote and Quartz)) — metamorphic

Greenstone / Epidosite

Epidosite (primary minerals: Epidote and Quartz)

Lapis Lazuli (Na8(Al6Si6O24)S2 (composed primarily of Lazurite, Calcite, and Pyrite)) — metamorphic

Lapis Lazuli

Na8(Al6Si6O24)S2 (composed primarily of Lazurite, Calcite, and Pyrite)

Greenschist (Greenschist (containing Chlorite, Actinolite, and Epidote)) — metamorphic

Greenschist

Greenschist (containing Chlorite, Actinolite, and Epidote)

Quartz Vein in Schist / Gneiss (Silicon Dioxide (SiO2) in Metamorphic Matrix) — igneous

Quartz Vein in Schist / Gneiss

Silicon Dioxide (SiO2) in Metamorphic Matrix

Gneiss (Gneiss (Foliated Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (Foliated Metamorphic Rock)

Granitoid Gneiss with Feldspar Vein (Gneiss (High-grade Metamorphic Rock) with Potassium Feldspar (KAlSi3O8)) — metamorphic

Granitoid Gneiss with Feldspar Vein

Gneiss (High-grade Metamorphic Rock) with Potassium Feldspar (KAlSi3O8)

Green Schist (Greenschist) (Greenschist facies metamorphic rock) — metamorphic

Green Schist (Greenschist)

Greenschist facies metamorphic rock

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

Gneiss

Gneiss (High-grade metamorphic rock)

Gneiss with Quartz Veining (Gneiss (High-grade Regional Metamorphic Rock)) — metamorphic

Gneiss with Quartz Veining

Gneiss (High-grade Regional Metamorphic Rock)

Greenschist (Greenschist (Major minerals include Chlorite, Actinolite, and Epidote)) — metamorphic

Greenschist

Greenschist (Major minerals include Chlorite, Actinolite, and Epidote)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Greenstone (Epidosite/Altered Diorite) (Metabasalt or Meta-andesite / Epidotized Diorite) — metamorphic

Greenstone (Epidosite/Altered Diorite)

Metabasalt or Meta-andesite / Epidotized Diorite

Schist (Chlorite/Mica Schist) — metamorphic

Schist

Chlorite/Mica Schist

Greenschist (Greenschist (Chlorite Schist)) — metamorphic

Greenschist

Greenschist (Chlorite Schist)

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

Muscovite (Mica)

Muscovite - KAl2(AlSi3O10)(OH)2

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

Milky quartz (likely quartz fragment)

Quartz, silicon dioxide (SiO₂)

Quartz Boulder (Silicon Dioxide (SiO2)) — mineral

Quartz Boulder

Silicon Dioxide (SiO2)

White Quartz (Silicon Dioxide (SiO2)) — mineral

White Quartz

Silicon Dioxide (SiO2)