Banded Gneiss
Gneiss (High-grade Regional 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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Clay Brick
Ceramic structural unit (Al2O3·2SiO2·2H2O as precursor)
metamorphic (man-made/anthropogenic)
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Gneiss (specifically a Granitic Gneiss)
Gneiss (Composition: Quartz, Feldspar, Mica)
metamorphic
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Greenschist with Quartz Veining
Greenschist (commonly containing Chlorite, Actinolite, and Epidote)
metamorphic
Granitic Gneiss
Gneiss (Metamorphic rock of granitic composition)
metamorphic
Laterite (iron-rich nodule, possibly Bauxite as a subtype)
Laterite (composed of various minerals including goethite, hematite, gibbsite, etc.)
Sedimentary
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 cementation)
sedimentary
Banded Gneiss
Gneiss (complex metamorphic silicate rock)
metamorphic
Granite (Weathered/Oxidized)
Phaneritic Felsic Igneous Rock (composed of Quartz, Orthoclase Feldspar, and Mica)
igneous
Dalmatian Jasper (or Dalmatian Stone)
Dalmatian Stone (A peralkaline felsite composed of feldspar, quartz, and sodic amphibole)
igneous
Sandstone
Arenite (SiO2 based with various mineral cements)
sedimentary
Gneiss
High-grade foliated metamorphic rock
metamorphic
Granite
Granite (a plutonic igneous rock composed primarily of quartz and feldspar)
Igneous Rock
Wishing Stone
Greenschist or Basalt with Quartz/Calcite Vein
metamorphic
Sandstone
Arenite (Sedimentary rock composed of sand-sized grains)
sedimentary
Quartz (Milk Quartz / Massive Quartz)
Silicon Dioxide (SiO2)
mineral
Dalmatian Jasper
Dalmatian Stone (not a true Jasper, primarily a Perthitic Feldspar with Arfvedsonite)
igneous
Granite
Phaneritic Plutonic Igneous Rock (composed of Quartz, Feldspar, and Mica)
igneous
Specular Hematite with Pyrite
Iron Oxide (Fe2O3) with Iron Sulfide (FeS2)
mineral
Marble
Recrystallized Calcite (CaCO3) Rock
metamorphic
Quartz Vein
Silicon Dioxide (SiO2)
Mineral
Greenschist (containing Epidote and Quartz)
Greenschist (Epidote-Chlorite-Actinolite Schist)
metamorphic
Sandstone
Arenite (primarily SiO2 - Silicon Dioxide)
sedimentary
Mica Schist
Mica Schist (primarily Muscovite or Biotite KAl2(AlSi3O10)(OH)2)
metamorphic
Pearl
Nacre (Aragonite and Conchiolin), CaCO3
mineral
Gneiss
High-grade metamorphic rock (Gneiss)
metamorphic
Sandstone (lithic/greywacke variant)
Clastic sedimentary rock (primarily SiO2 with rock fragments)
sedimentary
Hypersthene
Hypersthene ((Mg,Fe)SiO₃)
Mineral
Schist
Mica Schist
metamorphic
Serpentinite
Serpentinite (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
metamorphic
Sandstone
Arenite (predominantly SiO2 with iron oxides)
sedimentary
Banded Gneiss (River Rock/Pebble)
Gneiss (specifically a banded variety often found as a river rock)
Metamorphic Rock
Sandstone (River Stone)
Arenite (composed primarily of SiO2)
sedimentary
Schist
Mica Schist (primarily consisting of muscovite KAl2(AlSi3O10)(OH)2 or biotite K(Mg,Fe)3(AlSi3O10)(OH)2)
metamorphic
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals usually (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)
metamorphic
Mookaite Jasper
Silicified Radiolarite (SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Black Sand (Magnetite Sand)
Magnetite-rich Placers (Fe3O4)
sedimentary
Fancy Jasper
Jasper (Cryptocrystalline Quartz, SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement
sedimentary