Quartzite
Quartzite (primarily SiO2)
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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Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Quartzite (Milky)
Metamorphic rock predominantly composed of Quartz (SiO2)
metamorphic
Gneiss (specifically a Granitic Gneiss)
Gneiss (Composition: Quartz, Feldspar, Mica)
metamorphic
Limonite-stained Quartz
Silicon Dioxide (SiO2) with Iron Oxide/Hydroxide (FeO(OH)·nH2O) staining
mineral
Sandstone (lithic/greywacke variant)
Clastic sedimentary rock (primarily SiO2 with rock fragments)
sedimentary
Quartzite
Quartzite (composed primarily of SiO2)
metamorphic
Quartzite
Quartzite (composed primarily of SiO2)
metamorphic
Quartzite (River-worn Cobble)
Quartzite (composed primarily of SiO2)
metamorphic
River Siltstone / Mudstone Pebble
Siltstone (composed of mixed silicate and carbonate minerals)
sedimentary
Granite Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Gneiss
Foliated Metamorphic Rock (Gneiss)
metamorphic
Diamond
Diamond (C)
mineral
Mica Schist
Mica Schist (KAl2(AlSi3O10)(OH)2 / K(Mg,Fe)3AlSi3O10(OH)2)
metamorphic
Dalmatian Stone
Dalmatian Jasper (Aplitic Perthite)
igneous
Biotite Schist (likely)
Biotite Schist (rock), Biotite (mineral)
Metamorphic
Granite
Phaneritic intrusive felsic igneous rock
igneous
Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Greenschist (Chlorite Schist)
Greenschist (containing chlorite, actinolite, and epidote)
metamorphic
Sandstone (Gneissic or Banded)
Clastic Sedimentary Rock (composed predominantly of SiO2)
sedimentary
Clay (as a rock-forming material)
Clay minerals (e.g., Kaolinite group, Smectite group, Illite group, Chlorite group)
Mineral
Schist with Quartz/Mica
Mica Schist (primarily Muscovite and Quartz)
Metamorphic
Quartzite
Metamorphic rock predominantly composed of Quartz (SiO2)
metamorphic
Gneiss
Gneiss
metamorphic
Quartz Vein in Host Rock (Gabbro or Basalt)
Silicon Dioxide (SiO2) with Mafic Silicates
metamorphic/igneous
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Fossiliferous Limestone
Bioclastic Limestone (CaCO3)
sedimentary
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Epidosite (Epidote-Quartz rock)
Epidote-rich hydrothermal rock
metamorphic
Greenschist with Quartz Veining
Greenschist (commonly containing Chlorite, Actinolite, and Epidote)
metamorphic
Pebble (likely Quartzite or Chert)
Clastic Sediment, potentially composed of SiO₂ (Quartz)
Mineral, Sediment
Basalt
Extrusive volcanic basalt
igneous
Sandstone (River Cobble)
Sandstone (primarily composed of silica, SiO2)
sedimentary
Serpentinite
Serpentinite (composed primarily of mineral group (Mg,Fe,Ni,Al)3Si2O5(OH)4)
metamorphic
Chalcedony
Silicon Dioxide (SiO2)
mineral
Unakite
Unakite (Altered Granite composed of Orthoclase KAlSi3O8, Epidote Ca2(Al, Fe)3(SiO4)3(OH), and Quartz SiO2)
metamorphic
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Granite
Phaneritic Felsic Intrusive Igneous Rock
igneous
Gneiss Pebble
Gneiss
metamorphic
Banded Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic