Granite
Granite
Igneous
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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Conglomerate
Conglomerate (Rock composed predominantly of rounded clasts > 2mm)
sedimentary
Sandstone (Quartzite-rich River Cobble)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (Pet Rock)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Marble
Recrystallized Carbonate Rock (CaCO3)
metamorphic
Sandstone (Quartz-rich)
Arenite (composed mainly of SiO2)
sedimentary
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Mica Schist with Quartz
Mica Schist (primarily Muscovite or Biotite sheet silicates)
metamorphic
Basalt
Extrusive Mafic Igneous Rock
igneous
Verde Antique Marble (Serpentinite)
Serpentinite (composed mainly of Serpentine group minerals, Mg3Si2O5(OH)4)
metamorphic
Granite
Phaneritic Intrusive Igneous Rock (composed of Quartz, Feldspar, and Mica)
igneous
Almandine Garnet in Matrix
Almandine Garnet (Fe3Al2(SiO4)3)
metamorphic
Sandstone
Arenite (Siliclastic sedimentary rock)
sedimentary
Siltstone River Pebble
Siltstone (primarily composed of silt-sized particles)
sedimentary
Siltstone
Siltstone (primarily composed of SiO2, Al2O3, and phyllosilicates)
sedimentary
Red Sandstone Pebble
Arenite with iron oxide (Hematite)
sedimentary
Granite
Granite (composed primarily of Quartz, Feldspar, and Mica)
igneous
Garnet-Bearing Schist
Almandine Garnet Micaceous Schist
metamorphic
Sandstone (with possibly iron oxides and other minerals)
Sandstone
Sedimentary rock
Granite Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Garnet in Matrix (likely Almandine in Quartz/Mica Schist)
Almandine Garnet (Fe3Al2(SiO4)3) in Quartz-Feldspar host rock
metamorphic
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
metamorphic
Quartz Vein / Milky Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss
Metamorphic Rock (Gneissic texture)
metamorphic
Schist
Crystalline Metamorphic Rock (Schistose)
metamorphic
Limonite Concretion
Limonite (Hydrated Iron Oxide) FeO(OH)·nH2O
sedimentary
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Black Tourmaline
Schorl (Sodium Iron Aluminum Borosilicate Hydroxide), NaFe3Al6(BO3)3Si6O18(OH)4
mineral
Sandstone (Glacial Cobble)
Arenite / Sedimentary Rock (primarily SiO2)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Quartz with Chlorite or Hornblende inclusions
Silicon dioxide (SiO2) with phyllosilicate or amphibole inclusions
metamorphic
Garnet in Schist
Almandine Garnet in Mica-Schist (Fe3Al2(SiO4)3)
metamorphic
Garnet in Schist (Garnetiferous Micaceous Schist)
Almandine Garnet, Fe3Al2(SiO4)3
metamorphic
Granite
Granite (Phaneritic intrusive igneous rock; primarily SiO2 and Al2O3)
igneous
Greenshist / Chlorite Schist
Chlorite schist (contains (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6)
metamorphic
Eclogite
Eclogite (Omphacite + Pyrope)
metamorphic
Sandstone (Red/Brown Variety)
Arenite (composed primarily of SiO2 with Fe2O3 iron oxide inclusions)
sedimentary
Sandstone
Arenite
sedimentary
Sandstone (Quartz Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Serpentinite
Serpentinite (group of hydrous magnesium iron phyllosilicates)
metamorphic
Slate
Slate (Foliated metamorphic rock)
metamorphic