Rock Identifier

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

Opalite

Goldstone

Blue Goldstone

Pitchstone

Pumice

Gondite

Andalusite

Mandarin Garnet

Mandarin Garnet

Zincite

Talc Schist

Cherry Obsidian

Emerald Green Obsidian

Snowflake Obsidian (Vitreous volcanic silicate (SiO2 with Cristobalite inclusions)) — igneous

Snowflake Obsidian

Vitreous volcanic silicate (SiO2 with Cristobalite inclusions)

Quartz-veined Granite or Gneiss Pebble (Silicate-rich metamorphic rock fragment) — metamorphic

Quartz-veined Granite or Gneiss Pebble

Silicate-rich metamorphic rock fragment

Tumbled gray feldspar-rich stone, possibly granite or quartzite (Indeterminate; likely quartz–feldspar aggregate, potentially fine-grained granite or quartzite) — igneous

Tumbled gray feldspar-rich stone, possibly granite or quartzite

Indeterminate; likely quartz–feldspar aggregate, potentially fine-grained granite or quartzite

Pumice (Pumice (Amorphous silicate glass with trapped gas bubbles)) — igneous

Pumice

Pumice (Amorphous silicate glass with trapped gas bubbles)

Chert (Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline Quartz (SiO2)

Sandstone (Pebble) (Sandstone (SiO2 with matrix/cement)) — sedimentary

Sandstone (Pebble)

Sandstone (SiO2 with matrix/cement)

Corundum (Sapphire variant) (Aluminium oxide (Al2O3)) — mineral

Corundum (Sapphire variant)

Aluminium oxide (Al2O3)

Banded Chert (River Stone) (Silicon Dioxide (SiO2)) — sedimentary

Banded Chert (River Stone)

Silicon Dioxide (SiO2)

Chert / Flint (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Chert / Flint

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Chert (Yellow Jasper variant) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Yellow Jasper variant)

Microcrystalline Quartz (SiO2)

Sandstone (with ripple marks) (Arenite (SiO2 primarily)) — sedimentary

Sandstone (with ripple marks)

Arenite (SiO2 primarily)

Jasper (Silicon dioxide (SiO2) with impurities) — sedimentary

Jasper

Silicon dioxide (SiO2) with impurities

Red Sandstone (Arenite (Ferruginous Sandstone)) — sedimentary

Red Sandstone

Arenite (Ferruginous Sandstone)

Smoky Quartz (Silicon Dioxide (SiO2) with trace aluminum and irradiation) — mineral

Smoky Quartz

Silicon Dioxide (SiO2) with trace aluminum and irradiation

Diamond (C (Pure Carbon)) — gemstone

Diamond

C (Pure Carbon)

Chert / Flint (Silicon Dioxide (SiO2)) — sedimentary

Chert / Flint

Silicon Dioxide (SiO2)

Quartz Pebble (Quartz (Silicon Dioxide, SiO2)) — sedimentary

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Sandstone (likely Fossiliferous) (Arenite / Fossiliferous Sandstone (SiO2 composition)) — sedimentary

Sandstone (likely Fossiliferous)

Arenite / Fossiliferous Sandstone (SiO2 composition)

Sandstone (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone

Clastic sedimentary rock (primarily SiO2)

Quartz with Tourmaline or Amphibole (Silicon Dioxide with silicate inclusions (SiO2)) — mineral

Quartz with Tourmaline or Amphibole

Silicon Dioxide with silicate inclusions (SiO2)

Sandstone (Arenite (SiO2 composition dominant)) — sedimentary

Sandstone

Arenite (SiO2 composition dominant)

Pink Granite (Phaneritic Felsic Igneous Rock (composed of orthoclase, quartz, and plagioclase)) — igneous

Pink Granite

Phaneritic Felsic Igneous Rock (composed of orthoclase, quartz, and plagioclase)

Sandstone (Arenite (SiO2 based clastic rock)) — sedimentary

Sandstone

Arenite (SiO2 based clastic rock)

Chert (Flint Arrowhead) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint Arrowhead)

Silicon Dioxide (SiO2)

Chert (varieties: Flint or Jasper) (Silicon dioxide (SiO2) / Microcrystalline Quartz) — sedimentary

Chert (varieties: Flint or Jasper)

Silicon dioxide (SiO2) / Microcrystalline Quartz

Chert (Microcrystalline quartz (SiO2)) — sedimentary

Chert

Microcrystalline quartz (SiO2)

Sandstone (Arenite (specifically sublithic or quartz arenite)) — sedimentary

Sandstone

Arenite (specifically sublithic or quartz arenite)

Chert (Microcrystalline quartz (SiO2)) — sedimentary

Chert

Microcrystalline quartz (SiO2)

Chert Nodules (Limonitic Chert) (Cryptocrystalline Quartz (SiO2) with Hydrated Iron Oxides) — sedimentary

Chert Nodules (Limonitic Chert)

Cryptocrystalline Quartz (SiO2) with Hydrated Iron Oxides

Sandstone (Ferruginous) (Arenite (primarily SiO2 with Fe2O3 staining)) — sedimentary

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 staining)

Chert (with nodule) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (with nodule)

Microcrystalline Quartz (SiO2)

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

Amethyst (Amethyst (Silicon Dioxide - SiO2 with Iron impurities)) — mineral

Amethyst

Amethyst (Silicon Dioxide - SiO2 with Iron impurities)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Weathered iron-rich rock, possibly jasper or ironstone (Likely limonite/goethite-bearing siliceous rock; exact identification requires hardness and streak tests) — mineral

Weathered iron-rich rock, possibly jasper or ironstone

Likely limonite/goethite-bearing siliceous rock; exact identification requires hardness and streak tests

Chert (Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Quartzite (Quartzite (Metamorphic Quartz Sandstone)) — metamorphic

Quartzite

Quartzite (Metamorphic Quartz Sandstone)

Red Jasper (Jasper (Silicate Mineral), SiO2 with Fe2O3 inclusions) — sedimentary

Red Jasper

Jasper (Silicate Mineral), SiO2 with Fe2O3 inclusions

Green Jasper (Banded Jasper) (Silicon Dioxide (SiO2) with impurities) — sedimentary

Green Jasper (Banded Jasper)

Silicon Dioxide (SiO2) with impurities

Rose Quartz (Silicon Dioxide with traces of titanium, iron, or manganese (SiO2)) — mineral

Rose Quartz

Silicon Dioxide with traces of titanium, iron, or manganese (SiO2)

Chert (and associated river cobbles) (Silicon dioxide (SiO2)) — sedimentary

Chert (and associated river cobbles)

Silicon dioxide (SiO2)