Igneous Or Metamorphic

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

Quartz (Milky/Common)

Quartz (Silicon Dioxide, SiO2)

mineral

Quartz (specifically Milky or Clear Quartz)

Silicon Dioxide (SiO2)

mineral

Sunstone

Aventurine Feldspar ((Ca,Na)(Al,Si)4O8)

mineral

Pyrite

Iron Sulfide (FeS2)

mineral

Pyrite

Iron Sulfide (FeS2)

mineral

Clear/White Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

mineral

Muscovite Mica (Golden/Yellow variety)

KAl2(AlSi3O10)(F,OH)2

mineral

Quartz (Smoky/Milky variety)

Silicon Dioxide (SiO2)

mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

mineral

Epidote

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

mineral

Magnetite / Iron Ore

Magnetite (Fe3O4)

mineral

Aventurine Quartz

Silicon Dioxide (SiO2) with inclusions (typically Fuchsite/Mica)

metamorphic

Gneiss (Stream-worn Cobble)

Gneiss (Metamorphic rock composed primarily of Quartz, Feldspar, and Mica)

metamorphic

Gneiss

Gneiss (High-grade Metamorphic Rock)

metamorphic

Gneiss

Gneiss (High-grade metamorphic rock)

metamorphic

Almandine Garnet

Almandine [Fe3Al2(SiO4)3]

mineral

Red Garnet

Almandine and Pyrope (Silicate minerals: Fe3Al2(SiO4)3 and Mg3Al2(SiO4)3)

mineral

Nuummite

Nuummite (mixture of Anthophyllite and Gedrite)

metamorphic

Gneiss

metamorphic

Greenstone

Metabasalt / Chlorite-Epidote Schist

metamorphic

Gneiss (specifically Banded Gneiss)

Gneiss

metamorphic

Greenstone

Greenschist / Meta-basalt

metamorphic

Gneiss (Cobble)

Gneiss

metamorphic

Banded Gneiss

Gneiss (Metamorphic high-grade, predominantly SiO2, Al2O3, K2O, Na2O)

metamorphic

Lapis Lazuli

Na8(Al6Si6O24)S2 (Lazurite is the primary constituent mineral)

metamorphic

Gneiss

High-grade regional metamorphic rock (Foliated)

metamorphic

Banded Gneiss

Gneiss (high-grade metamorphic silicate rock)

metamorphic

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

metamorphic

River Cobble (Salt and Pepper Gneiss)

Gneiss (High-grade regional metamorphic rock)

metamorphic

Gneiss

Gneiss (High-grade regional metamorphic rock)

metamorphic

Gneiss (specifically Granite Gneiss)

Gneiss (High-grade Regional Metamorphic Rock)

metamorphic

Serpentine

Antigorite, Lizardite, or Chrysotile (Mg, Fe)3Si2O5(OH)4

metamorphic

Lapis Lazuli

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

metamorphic

Gneiss (specifically a weathered Amphibolite or Garnet Gneiss)

Gneiss (complex silicate composition)

metamorphic

Garnet-Bearing Gneiss

Almandine-Garnet Gneiss

metamorphic

Black Spinel

Magnesium Aluminum Oxide (MgAl2O4)

mineral

Greenschist with Quartz Veining

Greenschist (commonly containing Chlorite, Actinolite, and Epidote)

metamorphic

Mica Schist (with Golden/Biotite inclusions)

K(Mg,Fe)3AlSi3O10(F,OH)2 (Biotite), KAl2(AlSi3O10)(F,OH)2 (Muscovite)

metamorphic

Lava Stone and Chakra Beads

Basalt (with various mineral/synthetic beads)

igneous

Gneiss (Metamorphic Rock)

Gneiss (variable mineral formula primarily containing Quartz, Feldspar, and Mica)

metamorphic

Greenstone

Greenschist / Greenstone (containing Chlorite, Epidote, Actinolite)

metamorphic

Clear Quartz (or Rock Crystal)

Quartz (SiO₂)

Mineral