Sandstone
Arenite (primarily Quartz Sandstone with Iron Oxide)
sedimentary
Category
Metamorphic Rock (Primarily Composed Of Minerals)
Browse metamorphic rock (primarily composed of minerals) specimens identified by the Rock Identifier community.
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Moonstone
Orthoclase Feldspar (composed of alternate layers of orthoclase and albite), (K,Na)AlSi3O8
mineral
Shale
Sedimentary rock composed of clay minerals and quartz
sedimentary
Sandstone
Arenite
sedimentary
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
K-Feldspar (Potassium Feldspar)
Orthoclase / Microcline (KAlSi3O8)
mineral
Mica Schist with Quartz
Mica Schist (primarily Muscovite or Biotite with Quartz)
metamorphic
Red Sandstone
Arenite
sedimentary
Granite
Felsic intrusive igneous rock
igneous
Lapis Lazuli
Lapis Lazuli (Rock composed primarily of lazurite, calcite, and pyrite)
metamorphic
![Epidote and Quartz in Basalt (Epidote [Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)] in Metabasalt) — metamorphic](https://media.rock.id/epidote-and-quartz-in-basalt-e08bf758-8a44-4287-884d-e46154d22b80-thumbnail.jpg)
Epidote and Quartz in Basalt
Epidote [Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)] in Metabasalt
metamorphic
Diorite
Intermediate plutonic igneous rock
igneous
Quartz (likely) or a Quartzite Pebble
Silicon dioxide (SiO2) for quartz. If it's quartzite, it's a metamorphic rock primarily composed of quartz.
Mineral, specifically a detrital grain
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Bauxite
Bauxite (Al2O3·2H2O)
sedimentary
Gneiss
Gneiss
metamorphic
Mica Schist
Metamorphic rock predominantly composed of muscovite or biotite with quartz and feldspar
metamorphic
Lapis Lazuli
Lazurite-rich metamorphic rock ((Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
metamorphic
Sandstone (Stream Pebble)
Arenite (primarily SiO2)
sedimentary
Sandstone (with Feldspathic/Arkose qualities)
Arenite (primarily SiO2 with KAlSi3O8 components)
sedimentary
Basalt
Extrusive igneous rock primarily composed of plagioclase and pyroxene
igneous
Quartz with Mica/Schist inclusion
Silicon Dioxide (SiO2) with Phyllosilicates
mineral
Granite Pebble
Intrusive Igneous Rock
igneous
Sandstone (Quartzose Pebble)
Clastic Sedimentary Rock (Litharenite/Quartz arenite)
sedimentary
Granite
Intrusive igneous rock
igneous
Granite Boulder
Intrusive Igneous Rock
igneous
Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Garnet-bearing Schist / Conglomerate Specimen
Metamorphic rock with almandine garnet porphyroblasts
metamorphic
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Jasper and Quartz Breccia
Silica breccia (SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite (with Iron Oxide)
sedimentary
Gneiss
Gneissic Metamorphic Rock (Mineral composition: Quartz, Feldspar, Amphibole/Biotite)
metamorphic
Banded Gneiss
Gneiss (variable mineral composition)
metamorphic
Granite
Granite (Felsic Plutonic Rock)
igneous
Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Garnet Schist
Almandine Garnet Schist (Fe3Al2(SiO4)3 in Schistose matrix)
metamorphic
Mica Schist with Garnet
Garnet-Mica Schist
metamorphic
Marble
Metamorphic Rock (composed primarily of recrystallized calcite, CaCO3, or dolomite)
metamorphic
Pink Granite
Phaneritic intrusive igneous rock (Felsic)
igneous