Artificial Rock Face (Faux Rock)
Glass Fiber Reinforced Concrete (GFRC)
man-made/construction material
Category
Man Made Silicate (Anthropogenic Glass)
Browse man made silicate (anthropogenic glass) specimens identified by the Rock Identifier community.
Learn about Man Made Silicate (Anthropogenic Glass) in the encyclopedia
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Chert (Flint / Quartz Nodule)
Microcrystalline Quartz (SiO2)
sedimentary
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Black Chert River Stone
Cryptocrystalline Quartz (SiO2)
sedimentary
Sandstone
Arenite (mostly SiO2)
sedimentary
Tektite
Natural impact glass
meteorite
Chert (varietal: Flint/Jasper)
Silicon Dioxide (SiO2)
sedimentary
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Blue Goldstone
Aventurine Glass
Man-made mineral simulant (Glass)
Polished/tumbled brown-and-white mineral fragment
Indeterminate; possibly quartz-rich jasper, brecciated jasper, or an iron-stained quartz mineral
mineral
Feldspar (specifically Orthoclase)
Potassium aluminum silicate (KAlSi3O8)
mineral
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Chert or Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Aquamarine (Beryl) Beads
Beryllium aluminum silicate (Be3Al2Si6O18)
gemstone
Beryl (likely Aquamarine)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Yellow Beryl (Heliodor)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Potassium Feldspar (Orthoclase)
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Snowflake Obsidian
Volcanic glass with Cristobalite inclusions (70–75% SiO2)
igneous
Sandstone
Arenite (primarily SiO2)
sedimentary
Obsidian
Volcanic glass
igneous
Quartzite
Metamorphic Rock (Mainly SiO2)
metamorphic
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Smoky Quartz occurring with Feldspar
Silicon Dioxide (SiO2) with Potassium Aluminum Silicate (KAlSi3O8)
mineral
Quartzite
Metamorphosed Quartz Sandstone
metamorphic
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Pearl
Biogenic CaCO3 (Aragonite and Calcite)
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
Mineral
Tektite
Natural impact glass
meteorite
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Feldspar (Orthoclase)
Potassium Alveolar Silicate (KAlSi3O8)
mineral
Precious Coral (Red Coral)
Corallium rubrum (Calcium Carbonate, CaCO3)
mineral
Pegmatitic quartz–feldspar rock with dark mica
Granitic pegmatite; quartz (SiO₂), feldspar, and biotite mica
igneous
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Probable amber fragment
Amber (fossilized plant resin; chiefly amorphous organic resin, commonly dominated by succinite)
gemstone
Tumbled brown mineral pebble, possibly jasper or weathered quartzite
Indeterminate from the blurred image; likely microcrystalline quartz (SiO₂) if jasper, or quartzite dominated by quartz
mineral
Sandstone with Hematite staining
Arenite with Fe2O3 inclusions
sedimentary
Quartz with impurities or Host Rock
SiO2 (Silicon Dioxide) with mixed silicates
mineral
Orthoclase Feldspar
Potassium aluminum silicate (KAlSi3O8)
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral