Basalt with Iron Oxidation
Aphanitic Mafic Igneous Rock (composed primarily of Plagioclase and Pyroxene)
igneous
Category
Metamorphic Rock (Composed Of Multiple Minerals)
Browse metamorphic rock (composed of multiple minerals) specimens identified by the Rock Identifier community.
Learn about Metamorphic Rock (Composed Of Multiple Minerals) in the encyclopedia
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Quartzite
Quartzite (composed primarily of Quartz, SiO2)
metamorphic
Ruby in Zoisite
Ruby (Corundum, Al2O3) in Zoisite (Calcium aluminum silicate hydroxide, Ca2Al3(SiO4)3(OH)) with some Hornblende
Metamorphic Rock (specifically a rock composed of minerals)
Gneiss
Gneiss
metamorphic
Granite
Phaneritic Igneous Rock (composed primarily of Quartz, Feldspar, and Mica)
igneous
Schist
Schist (Crystalline metamorphic rock)
metamorphic
Granite
Granite
Igneous
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Siltstone River Rock
Siltstone (composed of silt-sized particles, silicate minerals)
sedimentary
Sandstone
Sandstone (Silicon Dioxide, SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Gneiss (with Quartzite layers)
Gneissic Metamorphic Rock
metamorphic
Sandstone
Arenite (primarily SiO2)
sedimentary
Mica Schist with Quartz
Mica Schist (primarily Muscovite or Biotite with Quartz)
metamorphic
Slate with Quartz Vein
Foliated Metamorphic Rock (Mainly Quartz, Muscovite, Chlorite)
metamorphic
Gneiss
Gneissic Metamorphic Rock (Mineral composition: Quartz, Feldspar, Amphibole/Biotite)
metamorphic
Granite with Mafic Inclusions
Granite (Phaneritic igneous rock composed of Quartz, Feldspar, and Mica)
igneous
Graphic Granite (Zebra Rock)
Pegmatitic Granite (composed of Quartz and K-Feldspar)
igneous
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (Pebble)
Sandstone (arenite, arkose, wacke depending on composition)
sedimentary
Calcite
Calcite (CaCO3)
Mineral
Granite (Dioritic variant)
Phaneritic Felsic Igneous Rock (primarily Quartz, Feldspar, and Mica)
igneous
Sandstone
Arenite (primarily SiO2 with various cementing agents)
sedimentary
Granite
Granite (a common rock type, not a single mineral species)
Igneous
Sandstone
Sandstone (lithified quartz arenite, arkose, graywacke, etc. depending on composition)
Sedimentary Rock
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Sandstone
Quartz Arenite (a type of sandstone composed of more than 90% quartz)
Sedimentary Rock
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Granite Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Chalcedony (River Stone)
Microcrystalline Quartz (SiO2)
mineral
Chert (Quartzite Pebble)
Microcrystalline Quartz (SiO2)
sedimentary
Desert Varnish (on Sandstone)
Rock Varnish (composed of Manganese oxides, Iron oxides, and Clay minerals)
sedimentary
Sandstone (Quartzose Sandstone)
Arenite (SiO2 principal component)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Conglomerate (Puddingstone)
Conglomerate (specifically, clastic sedimentary rock)
Sedimentary
Green Schist
Greenschist (Chlorite Schist)
metamorphic
River Stone (possibly Gneiss)
Metamorphic Gneiss
metamorphic
Jade (Nephrite or Jadeite)
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (Na(Al,Fe3+)Si2O6)
Mineral
Quartzite (River Pebble)
Quartzite (composed primarily of Silica, SiO2)
metamorphic
Oolitic Limestone
Oolite (Sedimentary rock composed of CaCO3)
sedimentary
Granite Cobble
Granite (Phaneritic igneous rock)
igneous