Greenstone
Greenschist (metamorphosed mafic igneous rock)
metamorphic
Category
Metamorphic Rock (Primarily Composed Of Minerals)
Browse metamorphic rock (primarily composed of minerals) specimens identified by the Rock Identifier community.
Learn about Metamorphic Rock (Primarily Composed Of Minerals) in the encyclopedia
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Sandstone
Arenite (SiO2 based with cement)
sedimentary
Sandstone
Arenite (composed mainly of SiO2)
sedimentary
Sandstone (lithic/greywacke variety)
Arenite (composed primarily of SiO2 with various lithic fragments)
sedimentary
Quartz pebble
Silicon Dioxide (SiO2)
mineral
Rough Dark Green Sapphire
Corundum (Al2O3)
mineral
Banded Gneiss
Gneiss (Metamorphic silicate rock)
metamorphic
Garnet-bearing Quartzite
Metamorphic rock containing Almandine Garnet (Fe3Al2(SiO4)3) and Quartz (SiO2)
metamorphic
Basalt
Mafic Igneous Rock (composed primarily of plagioclase feldspar and pyroxene)
Igneous
Dalmatian Stone
Peralkaline Quartz-Feldspar Rock
igneous
Gneiss
Gneiss (Metamorphic rock of variable composition, typically SiO2 rich)
metamorphic
Tiger Iron
Tiger Iron (Hematite, Red Jasper, and Tiger's Eye)
metamorphic
Green Quartz (Prasiolite/Adventurine)
Silicon Dioxide with inclusions (SiO2)
mineral
Greenschist (Greenstone River Pebble)
Greenschist (Chlorite Schist)
metamorphic
Greenschist
Greenschist (Actinolite-Chlorite Schist)
metamorphic
Grey River Stone (Gneiss/Schist mix)
Foliated Metamorphic Rock (variable mineral formula)
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Mica Schist
Schist (Biotite/Muscovite dominant)
metamorphic
Pebble or Cobble (likely composed of sandstone or conglomerate)
Clastic Sedimentary Rock (specific name like sandstone, conglomerate, or breccia would require microscopic analysis of clast size and angularity)
Sedimentary Rock (possibly a conglomerate or coarse-grained sandstone)
Peacock Ore
Bornite (Cu5FeS4) or Chalcopyrite treated with acid
mineral
Sandstone
Sandstone (Clastic Sedimentary Rock)
Sedimentary Rock
Schist with Quartz Veins
Schist with Quartz (SiO2)
metamorphic
Lapis Lazuli
Lapis Lazuli (a rock type, not a single mineral, composed primarily of lazurite, calcite, and pyrite)
Mineral, part of a rock
Granite
Phaneritic Acidic Igneous Rock (composed of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Serpentinite (Serpentine Rock)
Serpentinite is a rock composed of one or more serpentine group minerals, chiefly antigorite, chrysotile, and lizardite, with the general formula (Mg,Fe)3Si2O5(OH)4. Often includes other minerals like magnetite, talc, and chromite.
Metamorphic Rock
Fuchsite (Chrome Mica)
K(Al,Cr)2(AlSi3O10)(OH)2
mineral
Moonstone
Adularia or Orthoclase (KAlSi3O8) or Albite (NaAlSi3O8), specifically with lamellar exsolution of albite and orthoclase.
mineral
Yellow Apatite Sphere (Polished)
Fluorapatite / Ca5(PO4)3F
mineral
Sandstone (Banded)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Basalt
Basalt
igneous
Sandstone
Arenite
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone (Ferruginous)
Arenite (with iron oxide cement)
sedimentary
Granite
Granite (Felsic Plutonic Rock)
igneous
Garnet Schist
Almandine-mica schist
metamorphic
Sandstone
Arenite
sedimentary
Garnetiferous Quartzite (Garnet Gneiss Pebble)
Garnet-bearing Quartzite or Quartz-Feldspar Gneiss
metamorphic
![Schist (Mica Schist (formula variable based on mineral content, typically containing [K,Al,Fe,Mg,Si,O,H])) — metamorphic](https://media.rockidentification.com/82921e91-3bee-4a52-8b94-97f62233f834-thumbnail.jpg)
Schist
Mica Schist (formula variable based on mineral content, typically containing [K,Al,Fe,Mg,Si,O,H])
metamorphic
Granite
Granite (Felsic Plutonic Rock)
igneous
Quartzite with inclusions
Metamorphic Quartzite (SiO2 with accessory minerals)
metamorphic
Greenstone (Epidote/Chlorite-rich Metabasalt)
Greenschist / Epidosite (Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic