Schist
Mica Schist (Medium-grade metamorphic rock)
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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Granite Pebble
Granite (composed primarily of Quartz, Feldspar, and Mica/Amphibole)
igneous
Red Sandstone
Arenite
sedimentary
Granite
Phaneritic Plutonic Felsic Rock
igneous
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)3(Si, Al, Fe)2O5(OH)4
metamorphic
Diamond (set in jewelry)
Carbon (C)
mineral
Sand and Gravel (Quartz-rich)
Unconsolidated fluvial/beach sediment (primarily Silica/SiO2)
sedimentary
Garnet Schist or Garnet-bearing Quartzite
Metamorphic rock containing Almandine Garnet (Fe3Al2(SiO4)3) and Quartz (SiO2)
metamorphic
Chert (Flint)
Chert (Cryptocrystalline Quartz, SiO2)
sedimentary
Shale
Shale
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Granite Gneiss with Garnet
Garnetiferous Gneiss
metamorphic
Gneiss with Orthoclase Feldspar
Gneissic Metamorphic Rock with K-Feldspar inclusions
metamorphic
Unakite
Epidote-Feldspar rock (specifically, a variety of granite)
Metamorphic rock
Gneiss
Gneiss
metamorphic
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Mica Schist
Schist (Biotite/Muscovite rich)
metamorphic
Fulgurite
Fulgurite (Lechatelierite)
metamorphic
Sandstone (Ferruginous)
Arenite (with Iron Oxide cement)
sedimentary
Gneiss
High-grade Metamorphic Gneiss
metamorphic
Sandstone
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Kidney Stone
Calcium Oxalate (CaC2O4·nH2O)
mineral
Banded Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Magnetite (Lodestone)
Iron(II,III) oxide (Fe3O4)
mineral
Eclogite (retrograded)
Eclogite (Omphacite-Garnet rock)
metamorphic
Basalt
Basalt (Volcanic Mafic Rock)
igneous
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Asphalt (Bituminous Pavement)
Bituminous mix (Aggregates with Bitumen binder)
sedimentary
Sandstone (Red Sandstone)
Arenite (SiO2 based with Fe2O3 staining)
sedimentary
Quartz-veined Gneiss
Gneiss with Quartz (SiO2) intrusions
metamorphic
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2
metamorphic
Green Quartzite
Quartzite (primarily SiO2 with chlorite inclusions)
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Serpentinite
Serpentinite (Mg, Fe, Ni)3Si2O5(OH)4
metamorphic
Granite
Granite (Phaneritic Quartz-Feldspar Igneous Rock)
igneous
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)
metamorphic
Snowflake Obsidian
Volcanic Glass with Spherulite Inclusions (70–75% SiO2)
igneous
Aventurine (likely Green Aventurine)
Silicon Dioxide (SiO2) with mineral inclusions
Mineral/Mineraloid within a rock matrix