Banded Gneiss
Gneiss (variable mineral composition)
metamorphic
Category
Metamorphic Rock (Specifically A Rock Composed Of Minerals)
Browse metamorphic rock (specifically a rock composed of minerals) specimens identified by the Rock Identifier community.
Learn about Metamorphic Rock (Specifically A Rock Composed Of Minerals) in the encyclopedia
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Sandstone Beach Pebble
Clastic Sedimentary Rock (primarily Quartz with Iron Oxide coating)
sedimentary
Sandstone or Limestone
Arenite or Calcareous Sedimentary Rock
Sedimentary
Gneiss
Foliated Metamorphic Rock
metamorphic
Granite
Phaneritic Plutonic Igneous Rock (primarily composed of quartz, alkali feldspar, and plagioclase)
igneous
Clear Quartz (Rock Crystal) Bracelet
Silicon Dioxide (SiO2)
gemstone
Ironstone Pebble
Sedimentary ironstone / Hematitic Sandstone
sedimentary
Granite Pebble
Granite
igneous
Schist
Mica Schist
metamorphic
Unakite
Altered Granite (Granitic Metamorphic Rock)
metamorphic
White Marble
Calcite-rich Metasomatized Carbonate (CaCO3)
metamorphic
Greenschist (or Serpentinite) with Quartz-Feldspar Vein
Metabasalt / Greenschist Facies Rock
metamorphic
Quartzite Cobble
Metamorphic rock primarily composed of Quartz (SiO2)
metamorphic
Granite Pegmatite
Phaneritic Plutonic Igneous Rock
igneous
Quartz-rich metamorphic fragment (likely mica schist)
Mica schist, probably muscovite–quartz schist
metamorphic
Likely weathered gneiss
Foliated metamorphic rock, commonly quartz–feldspar–mica gneiss
metamorphic
Granite
Granite (plutonic igneous rock)
igneous
Schist
Mica Schist (contains muscovite/biotite and quartz)
metamorphic
Pink Granite
Phaneritic Felsic Igneous Plutonic Rock
igneous
Quartz-veined Metamorphic Rock
Quartz-veined Schist or Gneiss
metamorphic
Slate
Slate (Metamorphic rock)
metamorphic
Gneiss
Foliated Metamorphic Rock
metamorphic
Granodiorite or Diorite
Granodiorite / Diorite
igneous
Sandstone
Arenite (primarily SiO2)
sedimentary
Gneiss
Gneiss
metamorphic
Quartzite
Quartzite (composed primarily of Silica, SiO2)
metamorphic
Quartzite
Quartzite (composed primarily of Quartz, SiO2)
metamorphic
Auriferous Quartz (Gold-bearing Quartz)
Silicon Dioxide (SiO2) with trace Gold (Au) and Iron Oxides
mineral
Gneiss (specifically Granite Gneiss)
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Unakite / Epidotized Granite
Metamorphic Granite (Epidote-Orthoclase-Quartz Rock)
metamorphic
Granite Pebble
Intrusive Igneous Rock (Felsic to Intermediate)
igneous
Slate with Quartz Vein
Foliated Metamorphic Rock (Mainly Quartz, Muscovite, Chlorite)
metamorphic
Soapstone (Talc Steatite) Carving
Steatite (Hydrous magnesium silicate, Mg3Si4O10(OH)2)
metamorphic
Chert (specifically Flint or Jasper variant)
Chert (Siliceous rock composed of microcrystalline Quartz, SiO2)
sedimentary
Soapstone
Steatite (primarily composed of Talc, Mg₃Si₄O₁₀(OH)₂)
Metamorphic Rock
Quartzite
Quartzite (composed primarily of SiO2)
metamorphic
Rounded gray metamorphic rock, likely quartzite or gneiss
Quartz-rich metamorphic rock; exact identification is uncertain from the photograph
metamorphic
Serpentine
Antigorite/Lizardite (Mg, Fe)3Si2O5(OH)4
metamorphic
Serpentinite
Serpentinite (composed primarily of serpentine group minerals like lizardite, antigorite, and chrysotile)
metamorphic
Quartzite (specifically Milky Quartz variety)
Quartz (SiO2)
metamorphic
Dalmatian Stone
Dalmatian Stone (a fine-grained igneous rock, often misidentified as Dalmatian Jasper)
igneous
Granite
Granite (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)
igneous