Rock Identifier

Category

Not A Natural Rock (Man Made Composite)

Browse not a natural rock (man made composite) specimens identified by the Rock Identifier community.

Granite (Plutonic felsic igneous rock) — igneous

Granite

Plutonic felsic igneous rock

Granite (Granite (a felsic intrusive igneous rock)) — Igneous rock

Granite

Granite (a felsic intrusive igneous rock)

Smoky Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Smoky Quartz

Quartz (Silicon Dioxide, SiO2)

Granite (Granite (a common term for a felsic intrusive igneous rock)) — igneous

Granite

Granite (a common term for a felsic intrusive igneous rock)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Quartz (in matrix) (Quartz (SiO₂)) — mineral

Quartz (in matrix)

Quartz (SiO₂)

Basalt with Iron Oxidation (Vesicular Basalt (Aphanitic Mafic Igneous Rock)) — igneous

Basalt with Iron Oxidation

Vesicular Basalt (Aphanitic Mafic Igneous Rock)

Black River Stone (likely Basalt or Chert) (Basalt (primarily Plagioclase Feldspar and Pyroxene)) — igneous

Black River Stone (likely Basalt or Chert)

Basalt (primarily Plagioclase Feldspar and Pyroxene)

Granite (Granite (a felsic intrusive igneous rock)) — Igneous Rock

Granite

Granite (a felsic intrusive igneous rock)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Calcite (Calcite (CaCO3)) — Mineral

Calcite

Calcite (CaCO3)

Blue Agate (likely dyed) (Silicon Dioxide (SiO2)) — mineral

Blue Agate (likely dyed)

Silicon Dioxide (SiO2)

Sandstone (Clastic Sedimentary Rock (composed mostly of SiO2)) — sedimentary

Sandstone

Clastic Sedimentary Rock (composed mostly of SiO2)

Basalt (River Rock pebble) (Basalt (a mafic extrusive igneous rock)) — igneous

Basalt (River Rock pebble)

Basalt (a mafic extrusive igneous rock)

Malachite (Malachite (Cu2CO3(OH)2)) — mineral

Malachite

Malachite (Cu2CO3(OH)2)

Fluorite (Blue) (Calcium Fluoride (CaF2)) — mineral

Fluorite (Blue)

Calcium Fluoride (CaF2)

Serpentinite (Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe)3Si2O5(OH)4)) — metamorphic

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe)3Si2O5(OH)4)

Serpentine (Serpentinite) (Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4) — metamorphic

Serpentine (Serpentinite)

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Red Jasper (Brecciated Jasper) (SiO2 (Silicon Dioxide) with Ferric Iron inclusions) — sedimentary

Red Jasper (Brecciated Jasper)

SiO2 (Silicon Dioxide) with Ferric Iron inclusions

Basalt River Pebble (Basalt (Aphanitic Mafic Igneous Rock)) — igneous

Basalt River Pebble

Basalt (Aphanitic Mafic Igneous Rock)

Basalt (Basalt (Aphanitic Mafic Volcanic Rock)) — Igneous

Basalt

Basalt (Aphanitic Mafic Volcanic Rock)

Quartz (Variety: Citrine or Tumbled Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Quartz (Variety: Citrine or Tumbled Chalcedony)

Silicon Dioxide (SiO2)

Red Jasper (Silicon Dioxide (SiO2) with Hematite inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Sandstone (Arenite (Sedimentary rock composed of sand-sized minerals or rock grains)) — sedimentary

Sandstone

Arenite (Sedimentary rock composed of sand-sized minerals or rock grains)

Slate (Slate (a fine-grained, foliated metamorphic rock). Mineral composition: Primarily composed of mica minerals (muscovite, chlorite, sericite) and quartz, with minor amounts of hematite, pyrite, and other accessory minerals.) — sedimentary

Slate

Slate (a fine-grained, foliated metamorphic rock). Mineral composition: Primarily composed of mica minerals (muscovite, chlorite, sericite) and quartz, with minor amounts of hematite, pyrite, and other accessory minerals.

Basalt (River Stone) (Basalt) — igneous

Basalt (River Stone)

Basalt

Basalt (Mafic Igneous Rock) — igneous

Basalt

Mafic Igneous Rock

Dalmatian Stone (Dalmatian Jasper / Feldspathic Igneous Rock) — igneous

Dalmatian Stone

Dalmatian Jasper / Feldspathic Igneous Rock

Diamond (Diamond (pure carbon, C)) — Mineral

Diamond

Diamond (pure carbon, C)

Lapis Lazuli (Lazurite-rich metamorphic rock ((Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)) — metamorphic

Lapis Lazuli

Lazurite-rich metamorphic rock ((Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Vesicular Basalt (Extrusive Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)) — igneous

Vesicular Basalt

Extrusive Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)

Orthoclase Feldspar (Orthoclase (KAlSi3O8)) — mineral

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Sandstone Chert/Quartzite (Silicon Dioxide (SiO2) - Sedimentary Sandstone / Orthoquartzite) — sedimentary

Sandstone Chert/Quartzite

Silicon Dioxide (SiO2) - Sedimentary Sandstone / Orthoquartzite

Basalt (Basalt (extrusive igneous rock)) — Igneous

Basalt

Basalt (extrusive igneous rock)

Basalt River Stone (Aphanitic Mafic Igneous Rock) — igneous

Basalt River Stone

Aphanitic Mafic Igneous Rock

Sandstone (Water-worn Pebble) (Clastic Sedimentary Rock (primarily SiO2)) — sedimentary

Sandstone (Water-worn Pebble)

Clastic Sedimentary Rock (primarily SiO2)

Pearls (Aragonite (calcium carbonate) and Conchiolin) — Mineraloid

Pearls

Aragonite (calcium carbonate) and Conchiolin

Cubic Zirconia (Faceted) (Zirconium dioxide (ZrO2)) — mineral

Cubic Zirconia (Faceted)

Zirconium dioxide (ZrO2)

Amethyst (variety of Quartz) (SiO2 (Silicon Dioxide) with trace iron impurities) — Mineral

Amethyst (variety of Quartz)

SiO2 (Silicon Dioxide) with trace iron impurities

Build-A-Bear Plush (Non-Geological) (Polyester fibers (C10H8O4)n and Synthetic Polymers) — Anthropogenic / Non-mineral

Build-A-Bear Plush (Non-Geological)

Polyester fibers (C10H8O4)n and Synthetic Polymers

Anthropogenic / Non-mineral

Smoky Quartz (SiO2 (Silicon Dioxide with aluminum impurities)) — mineral

Smoky Quartz

SiO2 (Silicon Dioxide with aluminum impurities)

Crushed Rock (Basalt) (Basalt (Aphanitic Mafic Igneous Rock)) — Igneous

Crushed Rock (Basalt)

Basalt (Aphanitic Mafic Igneous Rock)