Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
mineral
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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Pink Granite Gneiss
Granitic Gneiss
metamorphic
Raw Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
Quartzite River Rock
Metamorphic Quartzite (primarily SiO2)
metamorphic
Schist
Schist (primarily mica-schist)
metamorphic
Quartz Druzy on Matrix (with Copper Mineralization)
Silicon Dioxide (SiO2) with Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Multi-gemstone Quartz and Fluorite Bracelet
Silicon Dioxide (SiO2) and Calcium Fluoride (CaF2)
mineral
Rhyolite
Rhyolite (High-silica volcanic rock)
igneous
Agate
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Turquoise in Matrix
Hydrous phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O
mineral
Eclogite
Eclogite (Omphacite-Garnet Metamorphic Rock)
metamorphic
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2), a variety of Actinolite-Tremolite
metamorphic
Biotite Mica
K(Mg,Fe)3AlSi3O10(OH)2
Mineral in a matrix (likely quartz or feldspar)
Granite Pebble
Phaneritic Felsic Igneous Rock
igneous
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Basalt
Extrusive Mafic Igneous Rock (composed primarily of Plagioclase, Pyroxene, and Olivine)
igneous
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)
metamorphic
Fulgurite
Fulgurite (Lechatelierite-rich variety)
metamorphic
Amethyst and Ruby in Zoisite
Silicon Dioxide (SiO2) and Anyolite (Zoisite-Hornblende-Ruby mix)
mineral and metamorphic rock
Quartzite Pebble
Metamorphic Quartzite (SiO2)
metamorphic
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Sandstone
Arenite
sedimentary
River Rock (Granitic Gneiss)
Foliated Granitic Gneiss
metamorphic
Jadeite Jade
Sodium Aluminum Silicate (NaAlSi2O6)
metamorphic
Sandstone (Pebble/Conglomerate fragment)
Sandstone (clastic sedimentary rock)
Sedimentary Rock
Diorite
Diorite (intermediate intrusive igneous rock)
igneous
Migmatite
Migmatite (Mixed metamorphic-igneous rock)
metamorphic
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Tiger's Eye
Pseudomorph of quartz after crocidolite (SiO2)
metamorphic
Ruby in Kyanite
Al2O3 (Corundum) in Al2SiO5 (Kyanite-Fuchsite-Quartz)
metamorphic
Greenstone / River Siltstone
Metasedimentary Greenstone (Chlorite-rich Siltstone)
metamorphic
Diamond (in Gold Jewelry)
Carbon (C)
mineral
Turquoise
Hydrated phosphate of copper and aluminum (CuAl6(PO4)4(OH)8·4H2O)
mineral
Green Aventurine
Silicon Dioxide (Quartz) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Amazonite
KAlSi3O8 (Potassium Aluminum Silicate) - a variety of Microcline Feldspar
mineral
Chalk
Micrite (primarily Calcium Carbonate, CaCO3)
sedimentary
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
metamorphic
Botryoidal Chalcedony (Agate/Carnelian)
Chalcedony (SiO2)
mineral
Gneiss
Gneiss
metamorphic