Rock Identifier

Category

Not A Rock (Synthetic Material)

Browse not a rock (synthetic material) specimens identified by the Rock Identifier community.

Learn about Not A Rock (Synthetic Material) in the encyclopedia

Dunite

Metarhyolite

Limonite

Rock Salt

Coral Rock

Rock Gypsum

Asphalt Rock

Calc-Silicate Rock

Calc-Silicate Rock

Talc-carbonate Rock

Talc-carbonate Rock

Yttrium Aluminum Garnet

Yttrium Aluminum Garnet

Zincite

Opalite

Sandstone (Pebble) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Pebble)

Arenite (primarily SiO2)

Sandstone (Red/Brown Variety) (Arenite (SiO2 with iron oxide impurities)) — sedimentary

Sandstone (Red/Brown Variety)

Arenite (SiO2 with iron oxide impurities)

Chert (Jasper/Flint variation) (Chert (SiO2)) — sedimentary

Chert (Jasper/Flint variation)

Chert (SiO2)

Granite Pebble (Granite (Felsic intrusive igneous rock)) — igneous

Granite Pebble

Granite (Felsic intrusive igneous rock)

Granite (Phaneritic Igneous Rock (Granite)) — igneous

Granite

Phaneritic Igneous Rock (Granite)

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

Rounded gray pebble (Indeterminate; likely a water-worn silicate or carbonate pebble) — sedimentary

Rounded gray pebble

Indeterminate; likely a water-worn silicate or carbonate pebble

Red Sandstone (Arenite) — sedimentary

Red Sandstone

Arenite

Polished orbicular stone, likely granite or diorite (Granite–diorite, composed mainly of feldspar, quartz, and dark amphibole/biotite) — igneous

Polished orbicular stone, likely granite or diorite

Granite–diorite, composed mainly of feldspar, quartz, and dark amphibole/biotite

Red Sandstone (Arenite (Ferruginous Sandstone)) — sedimentary

Red Sandstone

Arenite (Ferruginous Sandstone)

Chrysocolla (Copper Ore matrix) (Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O)) — mineral

Chrysocolla (Copper Ore matrix)

Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O)

Sandstone (Arenite (SiO2 based with various mineral cements)) — sedimentary

Sandstone

Arenite (SiO2 based with various mineral cements)

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

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 staining)

N/A - Non-Geological Item — not a rock/mineral

N/A - Non-Geological Item

not a rock/mineral

Sandstone (Ferruginous) (Arenite with Hematite cement (SiO2 + Fe2O3)) — sedimentary

Sandstone (Ferruginous)

Arenite with Hematite cement (SiO2 + Fe2O3)

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

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 staining)

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

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

Chert / Jasper

Silicon Dioxide (SiO2)

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

Chert (Black Flint)

Silicon Dioxide (SiO2)

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

Chert (Flint)

Silicon Dioxide (SiO2)

Chert (Jasper/Chalcedony Pebble) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper/Chalcedony Pebble)

Silicon Dioxide (SiO2)

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Quartz Sand/Gravel (Silicon Dioxide (SiO2)) — sedimentary

Quartz Sand/Gravel

Silicon Dioxide (SiO2)

Porphyritic Andesite (Andesite (porphyritic variety)) — igneous

Porphyritic Andesite

Andesite (porphyritic variety)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Sandstone (with Iron Staining) (Sandstone (mainly Quartz, SiO2, with Iron Oxides like Goethite/Hematite)) — sedimentary

Sandstone (with Iron Staining)

Sandstone (mainly Quartz, SiO2, with Iron Oxides like Goethite/Hematite)

Lepidodendron Plant Fossil (Lepidodendron sp. (Lycopodiophyta)) — fossil

Lepidodendron Plant Fossil

Lepidodendron sp. (Lycopodiophyta)

Chert (Pink Jasper/Agate variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Pink Jasper/Agate variety)

Microcrystalline Quartz (SiO2)

Chert (Yellow Jasper/Quartzite Pebble) (Microcrystalline Silicon Dioxide (SiO2)) — sedimentary

Chert (Yellow Jasper/Quartzite Pebble)

Microcrystalline Silicon Dioxide (SiO2)

Turquoise (Turquoise (CuAl6(PO4)4(OH)8·4H2O)) — mineral

Turquoise

Turquoise (CuAl6(PO4)4(OH)8·4H2O)

River Rock (Fluvial Cobble (typically Quartzite or Sandstone)) — sedimentary

River Rock

Fluvial Cobble (typically Quartzite or Sandstone)

Sandstone (Arenite (SiO2 principal component)) — sedimentary

Sandstone

Arenite (SiO2 principal component)

Sandstone (Ferruginous) (Arenite (Fe2O3 rich)) — sedimentary

Sandstone (Ferruginous)

Arenite (Fe2O3 rich)

Sandstone (Arenite (SiO2 principal component)) — sedimentary

Sandstone

Arenite (SiO2 principal component)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Weathered granite pebble (Granitic rock, chiefly quartz, potassium feldspar, plagioclase, and mica/hornblende) — igneous

Weathered granite pebble

Granitic rock, chiefly quartz, potassium feldspar, plagioclase, and mica/hornblende

Sandstone (Arenite (SiO2 based with various mineral cements)) — sedimentary

Sandstone

Arenite (SiO2 based with various mineral cements)

Milky quartz (Quartz (SiO₂), commonly massive or vein quartz) — mineral

Milky quartz

Quartz (SiO₂), commonly massive or vein quartz

Polished brecciated jasper (Jasper (microcrystalline quartz, SiO₂), likely brecciated and iron-stained) — metamorphic

Polished brecciated jasper

Jasper (microcrystalline quartz, SiO₂), likely brecciated and iron-stained

Limestone (Calcareous sedimentary rock (CaCO3)) — sedimentary

Limestone

Calcareous sedimentary rock (CaCO3)

Diorite (Intermediate plutonic igneous rock) — igneous

Diorite

Intermediate plutonic igneous rock

Diorite (Diorite (intermediate plutonic rock)) — igneous

Diorite

Diorite (intermediate plutonic rock)