Quartzite pebble
Quartzite (SiO2)
Category
Browse industrial byproduct (anthropogenic rock like material) specimens identified by the Rock Identifier community.
Quartzite pebble
Quartzite (SiO2)
Greenschist
Greenschist (Chlorite-actinolite schist)
Weathered granite-like rock
Coarse-grained granitic rock, likely quartz–feldspar–mica aggregate
Chert (Flint)
Chert (Cryptocrystalline Silica/SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
Sandstone
Arenite (SiO2 based)
Serpentine
Serpentinite (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
Chert (Flint Nodules)
Silicon Dioxide (SiO2)
Chert (Iron-stained)
Silicon Dioxide (SiO2) with Ferruginous impurities
Sandstone (Quartzite-rich)
Clastic sedimentary rock (primarily SiO2)
Quartz (Milky or Druzy Quartz)
Silicon Dioxide (SiO2)
Red Sandstone
Arenite
Chert / Flint
Silicon Dioxide (Microcrystalline Quartz, SiO2)
Sandstone (Quartzose)
Arenite (composed primarily of SiO2)
Ferruginous Sandstone Pebble
Arenite with Iron-Oxide Cement (SiO2 with Fe2O3/FeO(OH) staining)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Sandstone
Quartz Arenite
Quartzite (or Milky Quartz pebble)
Quartzite (Metamorphosed Sandstone) / Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Fossiliferous Limestone containing a Brachiopod or Mollusk Impression
Biogenic Sedimentary Rock / Fossiliferous Limestone
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with Fe2O3 cement)
Sandstone Pebbles
Arenite (primarily SiO2 with mineral cement)
Quartz (Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
Mica Schist
Metamorphic rock dominated by micas (muscovite, biotite)
Clear Quartz
Silicon Dioxide (SiO2)
Basalt
Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)
Garnet (Almandine)
Almandine (Fe3Al2(SiO4)3)
Garnet in Schist/Gneiss Matrix
Almandine (Fe3Al2(SiO4)3) or Pyrope (Mg3Al2(SiO4)3)
Schist (Mica Schist)
Mica Schist
Sandstone
Clastic Sedimentary Rock
Marble
Recrystallized Calcite Rock (CaCO3)
Sandstone
Arenite (SiO2 based)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Olivine (Peridotite)
(Mg, Fe)2SiO4 (Magnesium Iron Silicate)
Quartzite with Hematite staining
Metamorphic Quartzite (SiO2)
N/A (Non-Geological Object)
Sandstone (Ferruginous)
Arenite (with Iron Oxide cement)
Sandstone
Arenite (SiO2 principal component)
Sandstone (Ferruginous)
Ferruginous Sandstone (SiO2 with iron oxide cement)