Quartzite with Iron Inclusions
Metamorphosed Quartz (SiO2)
metamorphic
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.
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Granodiorite Pebble
Granodiorite
igneous
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)
sedimentary
Quartzite pebble
Quartzite (mostly Silicon Dioxide, SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Slate with Quartz Vein
Foliated Metamorphic Rock (Mainly Quartz, Muscovite, Chlorite)
metamorphic
Jadeite
Jadeite (NaAlSi2O6)
metamorphic
Aquamarine
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Gemstones (Emerald and Yellow Topaz or Citrine)
Beryl (Be3Al2Si6O18) and Quartz (SiO2) or Topaz (Al2SiO4(F,OH)2)
mineral
Green Aventurine
Silicon dioxide with Fuscite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
mineral
Shark Tooth Fossil
Otodus sp. (possibly Cretalamna)
fossil
Quartzite
Quartzite (primarily SiO2)
metamorphic
Phyllite
Phyllite
metamorphic
Quartzite Pebble (with Iron Inclusions)
Metamorphic Rock (Mainly SiO2)
metamorphic
Quartzite with Veining
Quartzite (SiO2)
metamorphic
Conglomeratic Sandstone
Clastic Sedimentary Rock
sedimentary
Anthracite Coal
Anthracite (Carbon-based sedimentary-derived metamorphic rock)
metamorphic
Basalt with Feldspar phenocrysts
Aphanitic to Porphyritic Mafic Volcanic Rock
igneous
Sandstone
Arenite (SiO2 principal)
sedimentary
Ruby
Corundum (Al2O3:Cr)
gemstone
Sandstone (Ferruginous)
Arenite (Fe-rich)
sedimentary
Basalt with Quartz Infill
Aphanitic Mafic Igneous Rock with Silica (SiO2) inclusion
igneous
Sandstone (Greywacke/Lithic Sandstone)
Arenite (composed primarily of SiO2)
sedimentary
Sandstone (Arkose/Quartzose)
Arenite (SiO2 based clastic rock)
sedimentary
Fossiliferous Limestone
Bioclastic Limestone (CaCO3)
sedimentary
Sandstone (likely Quartzose Sandstone)
Arenite (primarily SiO2)
sedimentary
Emerald
Beryl (Be₃Al₂Si₆Oထ₈) with Chromium/Vanadium impurities
gemstone
Schorl (Black Tourmaline)
NaFe3Al6(BO3)3Si6O18(OH)4 (Sodium Iron Aluminum Borosilicate)
mineral
Tourmaline
Complex Borosilicate - Na(Li,Al)3Al6(BO3)3Si6O18(OH)4 (Elbaite species)
mineral
Quartzite pebble with Mafic inclusions
Quartzite (SiO2)
metamorphic
K-Feldspar (Potassium Feldspar)
Potassium Feldspar (Microcline or Orthoclase), KAlSi3O8
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Corundum (Sapphire)
Corundum (Al2O3)
mineral
Nuummite
Nuummite (Orthorhombic amphiboles: Anthophyllite and Gedrite)
metamorphic
Vuggy Limestone
Carbonate Sedimentary Rock with Vuggy Porosity (CaCO3)
sedimentary
Quartzite (River Stone)
Silicon Dioxide (SiO2)
metamorphic
Quartz
Silicon Dioxide (SiO2)
Mineral
Iron-stained quartzite (likely)
Quartzite, predominantly quartz (SiO₂), with iron-oxide staining and possible mica/feldspar
metamorphic
Yellow Chert
Sedimentary cryptocrystalline quartz (SiO2)
sedimentary
Sandstone (Ferruginous)
Sandstone (mainly SiO2 with Fe2O3 staining)
sedimentary