Serpentine (Nephrite-like River Cobble)
Serpentinite (Hydrous Magnesium Iron Silicate)
Category
Browse industrial byproduct (anthropogenic rock like material) specimens identified by the Rock Identifier community.
Serpentine (Nephrite-like River Cobble)
Serpentinite (Hydrous Magnesium Iron Silicate)
Limestone (Cliff Formation)
Limestone (predominantly CaCO3 as calcite)
Granite with Epidote
Granite, containing quartz, feldspar, and epidote
Chert (Agatized/Banded)
Chert (Microcrystalline Silicon Dioxide, SiO2)
Chert (containing Flint and Calcareous inclusions)
Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3) impurities
Green Greenstone / Celadonite-bearing Metamorphic Rock
Greenschist / Celadonite / Serpentinitic pebble
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Schist (Micaceous)
Mica Schist
Shale
Fissile Clay-dominant Mudrock (SiO2, Al2O3, K2O, Na2O, CaO, MgO)
Chert (or Flint)
SiO2 (Microcrystalline Quartz)
Sandstone (specifically Red Sandstone)
Arenite (SiO2 with Iron Oxide)
Sandstone (Red)
Arenite (primarily SiO2 with Iron Oxide staining)
Sandstone (likely Quartzose Sandstone)
Arenite (composed primarily of SiO2)
Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
Quartz / Quartzite
Quartzite (primarily Silicon Dioxide, SiO2)
Sandstone (likely Fossiliferous Sandstone)
Clastic sedimentary rock (primarily SiO2)
Quartzite
Quartzite (SiO2)
Quartzite
Quartzite (SiO2)
Sandstone (Water-worn Pebble)
Clastic Sedimentary Rock (primarily SiO2)
Green aventurine quartz sphere
Quartz, SiO₂, with fuchsite or other green mica inclusions
Quartzite Pebble
Quartzite (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz Pebble
Silicon Dioxide (SiO2)
Cubic Zirconia
Cubic Zirconium Dioxide (ZrO2)
Agate
Silicon Dioxide (SiO2) - Chalcedony variety
Diorite
Diorite (Intermediate intrusive igneous rock)
Chert (Nodule)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Mica Schist
Mica Schist (Quartz-Biotite-Muscovite Schist)
Gabbro
Gabbro
Jasper
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Conglomerate
Sedimentary Conglomerate
Nuummite
Nuummite (Orthorhombic amphiboles: Anthophyllite and Gedrite)
Scoria (Lava Rock)
Scoria (extrusive volcanic rock)
Sandstone (Ferruginous)
Arenite (SiO2 with Fe2O3 inclusions)
Sandstone
Arenite (SiO2 based with mineral cement)
Fossilized Wood (Petrified Wood)
Agatized wood (primarily SiO2)
Textile (Upholstery Fabric)
Woven Polyethylene/Polyester or Cotton Blend
Fossil Coral
Scleractinia or Anthozoa (Fossilized)
Blue Sapphire
Corundum (Al2O3)
Schist with Quartz Veins
Schist with Quartz (SiO2)
Coquina or Fossiliferous Limestone
Biogenic Limestone (Calcite/Aragonite CaCO3)