Fossil Crab
Decapoda (likely Avitelmessus or Raninidae family)
sedimentary
Category
Metamorphic (Likely Gneiss Or Schist Based On Texture)
Browse metamorphic (likely gneiss or schist based on texture) specimens identified by the Rock Identifier community.
Black Tourmaline
Schorl (Na(Fe2+)_{3}Al_{6} (BO_{3})_{3} (Si_{6}O_{18})(OH)_{4})
Mineral
Garnet in Schist (Polished Tower)
Almandine Garnet (Fe3Al2(SiO4)3) in Mica Schist
metamorphic
Schist
Mica Schist
metamorphic
Sandstone (with banding/weathering)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Quartz
Silicon dioxide (SiO2)
Mineral
Gneiss (specifically Granitic Gneiss)
Gneiss (composed primarily of Quartz, Feldspar, and Biotite/Amphibole)
metamorphic
Sandstone
Arenite (SiO2-rich)
sedimentary
Soapstone (Talc Schist)
Steatite
metamorphic
Quartz
Quartz (SiO₂)
Mineral
Apatite
Apatite Group (e.g., Fluorapatite Ca5(PO4)3F, Chlorapatite Ca5(PO4)3Cl, Hydroxylapatite Ca5(PO4)3(OH))
mineral
Sandstone
Arenite (SiO2 based)
sedimentary
Schist
Mica Schist
metamorphic
Granite Gneiss
Felsic Gneiss
metamorphic
Marble
Metamorphosed Limestone (principally CaCO3)
metamorphic
Diorite Gneiss
Foliated Diorite Gneiss
metamorphic
Quartz
Quartz (SiO₂)
Mineral
Granite Glacial Erratic
Intrusive Phaneritic Felsic Rock (Granite)
igneous
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (SiO2 based)
sedimentary
Tourmaline (Multi-colored)
Complex Borosilicate (Na,Ca)(Li,Mg,Al,Fe)3Al6(BO3)3Si6O18(OH)4
mineral
Aventurine (Green Quartz)
Silicon Dioxide (SiO2) with inclusions of Fuchsite (Mica)
mineral
Rose Quartz with Schist Matrix
Silicon Dioxide (SiO2) with Mica-Schist
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Garnetiferous Quartzite (Garnet Gneiss Pebble)
Garnet-bearing Quartzite or Quartz-Feldspar Gneiss
metamorphic
Sandstone
Arenite (SiO2 based)
sedimentary
Greenschist (Greenstone)
Chlorite schist (primarily Chlorite-Epidote-Actinolite-Albite)
metamorphic
Gneiss (specifically a weathered Amphibolite or Garnet Gneiss)
Gneiss (complex silicate composition)
metamorphic
Mica Schist with Pyrite
Muscovite/Biotite Schist (Complex Silicate)
metamorphic
Pyrite in Matrix (likely Quartz or Schist matrix)
Iron Sulfide (FeS2)
mineral
Phyllite
Phyllite (Foliated metamorphic rock)
metamorphic
Mica-rich Sandstone or Micaceous Schist Weathering
Micaceous Schist (Muscovite-Quartz composition)
Metamorphic or Sedimentary depending on local grade
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Fuchsite
K(Al,Cr)2(AlSi3O10)(OH)2 (Chromium-rich Muscovite)
mineral
Blue Aventurine
Silicon Dioxide (SiO2) with inclusions of Dumortierite
Mineral (silicate variety)
Schist
Mica Schist
metamorphic
Emerald in Matrix (Quartz/Schist)
Beryl (Be₃Al₂Si₆O₁₈) with Chromium/Vanadium impurities
mineral
Sandstone (with potential iron-oxide weathering)
Arenite (SiO2 based)
sedimentary
Drill Core Samples (Varied Lithology)
Multi-lithological core samples (containing potential granite, marble, and phyllite/schist sequence)
igneous, sedimentary, and metamorphic
Granite (Weathered)
Granitic intrusive rock
igneous
Banded Gneiss (River Cobble)
Gneiss (High-grade regional metamorphic rock)
metamorphic
Ruby (Corundum)
Aluminium oxide (Al2O3) with Chromium traces
mineral