Amphibolite
Amphibolite
metamorphic
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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Weathered granite
Granite, typically composed of quartz, feldspar, and mica
igneous
Granitic Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Yellow Quartzite (Onyx Pebble)
Silicon Dioxide (SiO2) - Quartzite
metamorphic
Sandstone (likely Arkosic or Lithic Sandstone)
Clastic Sedimentary Rock (SiO2 with assorted minerals)
sedimentary
Wishing Stone with Quartz Veins
Quartzite or Quartz-veined Metamorphic Rock (composed mainly of SiO2)
metamorphic
Granite-like rock
Coarse-grained felsic intrusive rock, likely granite or granodiorite
igneous
Quartzite
Quartzite (composed primarily of SiO2)
metamorphic
Pink quartzite pebble
Quartzite, composed predominantly of quartz (SiO₂)
metamorphic
Soapstone
Steatite (primarily composed of Talc, Mg₃Si₄O₁₀(OH)₂)
Metamorphic Rock
Unakite
Altered Granite (Epidotized Granite)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Conglomeratic basalt (rounded volcanic breccia/pebble)
Basaltic conglomerate or polymict volcanic breccia; predominantly plagioclase–pyroxene basalt with lighter felsic or weathered clasts
igneous
Weathered quartzite pebble
Quartzite, composed predominantly of SiO₂ (quartz)
metamorphic
Quartzite pebble
Quartzite (SiO2)
metamorphic
Agate Geode Slice with Druzy Quartz
Silicon Dioxide (SiO2) - Banded Chalcedony with Quartz
mineral
Mica-rich metamorphic rock, likely schist
Biotite–muscovite schist, possibly quartz-mica schist
metamorphic
Polished jasper, likely ocean jasper or orbicular jasper
Jasper: microcrystalline quartz (SiO₂), commonly with chalcedony and iron-oxide inclusions
mineral
Granite
Granite (Felsic Plutonic Rock)
Igneous
Diorite
Diorite (intermediate intrusive igneous rock)
igneous
Polished white quartz-rich pebble
Microcrystalline quartz (SiO₂), likely milky quartz or quartzite
mineral
Starfish Fossil
Asteroidea fossil
fossil
Sandstone (Ferruginous)
Arenite (SiO2 with Fe2O3 inclusions)
sedimentary
Granite
Intrusive Igneous Rock
igneous
Blue Apatite
Ca5(PO4)3(F,Cl,OH)
mineral
Quartz-rich rock fragment (likely quartzite)
Quartzite, composed chiefly of quartz (SiO₂)
metamorphic
Sandstone with Manganese Oxide Patina
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Diorite (Spotted or Dalmatian Stone effect)
Diorite (Intermediate Plutonic Rock)
igneous
Dalmatian Jasper
Peralkaline Quartz-feldspathic Rock (Arfvedsonite-bearing)
igneous
Granite with Epidote
Granite, containing quartz, feldspar, and epidote
Igneous
Quartzite
Quartzite (composed primarily of SiO2)
metamorphic
Eclogite
Eclogite (composed primarily of Omphacite and Garnet)
metamorphic
Bauxite
Aluminum ore (mixture of gibbsite Al(OH)3, boehmite γ-AlO(OH), and diaspore α-AlO(OH))
sedimentary
Bauxite
Bauxite (Mixture of Al(OH)3, AlO(OH), and Fe2O3)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Red Sandstone
Arenite (with Iron Oxide / Hematite cementation)
sedimentary
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4)
metamorphic
Weathered gray sandstone or siltstone cobble
Clastic sedimentary rock, likely quartz-rich sandstone/siltstone (diagnosis uncertain from image)
sedimentary
Quartz-rich rock (possibly quartzite)
Quartzite, composed mainly of quartz (SiO₂)
metamorphic
Granite
Phaneritic Felsic Igneous Rock
igneous
Unakite
Granitic Unakite (Alteration rock composed of pink orthoclase feldspar, green epidote, and clear quartz)
metamorphic
Unidentifiable Rock Fragment
Uncertain