Soapstone
Steatite (primarily composed of Talc, Mg₃Si₄O₁₀(OH)₂)
Metamorphic Rock
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.
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Green Quartzite (with Fuchsite)
Quartzite with Muscovite variety Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Chrome Diopside
Magnesium Calcium Silicate (MgCaSi2O6) containing Chromium impurities
mineral
Quartz (specifically Milky or Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Gneiss (Granitic Gneiss)
Gneiss (composed primarily of Quartz, Feldspar, and Mica/Amphibole)
metamorphic
Mica-rich metamorphic rock, likely schist
Biotite–muscovite schist, possibly quartz-mica schist
metamorphic
Granite
Granite, a coarse-grained intrusive felsic rock composed mainly of quartz, feldspar, and mica
igneous
Shale
Shale (Sedimentary rock composed of mud/clay minerals)
sedimentary
Slate
Slate (Metamorphic Rock)
metamorphic
Dark fine-grained rock fragment
Likely basalt or basaltic scoria; exact identification requires testing
igneous
Green Aventurine
Quartz (SiO2) with fuchsite inclusions
mineral
Banded Gneiss
Banded Gneiss (Metamorphic Rock)
metamorphic
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Greenstone / Greenschist
Greenschist (composed of chlorite, epidote, and actinolite)
metamorphic
Quartzite
Quartzite (composed primarily of SiO2)
metamorphic
Granite Pebble
Intrusive Igneous Rock
igneous
Quartzite (Beach Pebble)
Quartzite (composed primarily of SiO2)
metamorphic
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Quartz-rich gravel fragment
Quartz (silicon dioxide, SiO₂), possibly with feldspar or carbonate inclusions
mineral
Schist
Metamorphic Rock (Schist)
metamorphic
Gneiss (with Quartzite layers)
Gneissic Metamorphic Rock
metamorphic
Sandstone
Sandstone (composed predominantly of Quartz, SiO2)
sedimentary
Green Slate or Metamorphic Rock with Moss/Lichen
Metamorphic rock / Phyllite or Slate variant
metamorphic
Red Sandstone (Iron-Rich)
Arenite (Fe2O3)
sedimentary
Serpentine
Serpentinite (composed primarily of Mg3Si2O5(OH)4)
metamorphic
Gneiss
High-grade metamorphic rock (Gneiss)
metamorphic
Ironstone Concretion (Moqui Marble)
Iron-oxide Concretion (Hydrated ferric oxide, Fe2O3·nH2O)
sedimentary
Quartz-rich granite (likely leucocratic granite)
Granite, composed mainly of quartz and feldspar with minor dark minerals
igneous
Sandstone
Arenite (primarily SiO2)
sedimentary
Granite
Granite (plutonic igneous rock)
igneous
Quartzite
Quartzite (SiO2)
metamorphic
Banded gneiss pebble
Gneiss, commonly quartz–feldspar–mica gneiss
metamorphic
Sandstone
Arenite (Siliclastic sedimentary rock), SiO2 + various minerals
sedimentary
Magnetite
Magnetite (Fe3O4)
mineral
Sandstone
Arenite (Sedimentary rock composed of sand-sized minerals or rock grains)
sedimentary
Schist (Oxidized)
Mica Schist with Iron Oxide staining
metamorphic
Likely serpentinite (rough green serpentinite rock)
Serpentinite, composed mainly of serpentine-group minerals (e.g., antigorite, lizardite, and chrysotile)
metamorphic
Lapis Lazuli
Lapis Lazuli (a rock composed primarily of Lazurite, Sodalite, Calcite, and Pyrite)
Mineral
Granodiorite
Granodiorite (Intermediate intrusive igneous rock)
igneous
Quartz Geode
Silicon Dioxide (SiO2)
Mineral/Sedimentary
Pink Granite
Phaneritic Felsic Igneous Rock (Granite)
igneous