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.

Quartzite with Iron Inclusions (Quartzite (primarily SiO2 with Fe2O3 impurities)) — metamorphic

Quartzite with Iron Inclusions

Quartzite (primarily SiO2 with Fe2O3 impurities)

Veined Quartz (SiO2 (Silicon Dioxide)) — Mineral

Veined Quartz

SiO2 (Silicon Dioxide)

Turquoise (Hydrous phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

Hydrous phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O

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

Basalt River Rock

Basalt (Aphanitic Mafic Igneous Rock)

Prehnite (Prehnite (Ca2Al2Si3O10(OH)2)) — mineral

Prehnite

Prehnite (Ca2Al2Si3O10(OH)2)

Basalt (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

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

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 staining)

Serpentinite (Serpentinite (complex of Antigorite, Lizardite, and Chrysotile, Mg3Si2O5(OH)4)) — metamorphic

Serpentinite

Serpentinite (complex of Antigorite, Lizardite, and Chrysotile, Mg3Si2O5(OH)4)

Turquoise (Turquoise (Hydrated copper aluminum phosphate, CuAl6(PO4)4(OH)8·4H2O)) — Mineral

Turquoise

Turquoise (Hydrated copper aluminum phosphate, CuAl6(PO4)4(OH)8·4H2O)

Orange Calcite (Calcite (CaCO3)) — Mineral

Orange Calcite

Calcite (CaCO3)

Amphibolite with Hornblende (Amphibole-rich Metamorphic Rock (Ca2(Mg,Fe)5Si8O22(OH)2)) — metamorphic

Amphibolite with Hornblende

Amphibole-rich Metamorphic Rock (Ca2(Mg,Fe)5Si8O22(OH)2)

Amphibolite (Amphibolite) — metamorphic

Amphibolite

Amphibolite

Quartz (Druzy) in host rock (SiO₂ (Silicon Dioxide) as Quartz, with unspecified host rock components (likely silicates and iron oxides)) — Mineral

Quartz (Druzy) in host rock

SiO₂ (Silicon Dioxide) as Quartz, with unspecified host rock components (likely silicates and iron oxides)

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

Sandstone (Red/Brown Variety)

Arenite (SiO2 with iron oxide impurities)

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

Basalt

Basalt (Aphanitic Mafic Igneous Rock)

Vesicular Basalt (Basalt) — igneous

Vesicular Basalt

Basalt

Agate (Silicon dioxide (SiO2)) — mineral

Agate

Silicon dioxide (SiO2)

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

Sandstone (Weathered Pebble)

Arenite (SiO2 primarily)

Blue Agate (likely Dyed) (Silicon Dioxide (SiO2) - Chalcedony variety) — mineral

Blue Agate (likely Dyed)

Silicon Dioxide (SiO2) - Chalcedony variety

Slate (Foliated Metamorphic Rock (composed primarily of silica and alumina with iron and magnesium)) — metamorphic

Slate

Foliated Metamorphic Rock (composed primarily of silica and alumina with iron and magnesium)

Crazy Lace Agate (Chalcedony (Silicon Dioxide, SiO2)) — mineral

Crazy Lace Agate

Chalcedony (Silicon Dioxide, SiO2)

Synthetic Convention Badge (Plastic/PVC) (Polyvinyl Chloride (PVC) / Polycarbonate) — mineraloid (synthetic)

Synthetic Convention Badge (Plastic/PVC)

Polyvinyl Chloride (PVC) / Polycarbonate

mineraloid (synthetic)

Basalt (River Stone/Pebble) (Basalt (Extrusive Igneous Rock)) — igneous

Basalt (River Stone/Pebble)

Basalt (Extrusive Igneous Rock)

Hematite Nodule (Hematite (Fe2O3)) — mineral

Hematite Nodule

Hematite (Fe2O3)

Basalt with Peridotite Inclusion (Mafic Volcanic Rock (Extrusive Igneous) with Ultramafic Xenolith) — igneous

Basalt with Peridotite Inclusion

Mafic Volcanic Rock (Extrusive Igneous) with Ultramafic Xenolith

Amethyst (Silicon Dioxide (SiO2) with Fe3+ impurities) — mineral

Amethyst

Silicon Dioxide (SiO2) with Fe3+ impurities

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Basalt (Basalt (Fine-grained extrusive igneous rock)) — igneous

Basalt

Basalt (Fine-grained extrusive igneous rock)

Green Quartzite (Quartzite (SiO2)) — metamorphic

Green Quartzite

Quartzite (SiO2)

Granite (Granite (High-silica plutonic rock)) — igneous

Granite

Granite (High-silica plutonic rock)

Basalt with Quartz/Calcite Veins (Basalt (Aphanitic Mafic Volcanic Rock) with Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3) inclusions) — igneous

Basalt with Quartz/Calcite Veins

Basalt (Aphanitic Mafic Volcanic Rock) with Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3) inclusions

Limestone (Calcite (CaCO3)) — sedimentary

Limestone

Calcite (CaCO3)

Quartz Veined Rock (Likely Graywacke or Quartzite) (Silicon Dioxide (SiO2) veins in Metasedimentary matrix) — metamorphic

Quartz Veined Rock (Likely Graywacke or Quartzite)

Silicon Dioxide (SiO2) veins in Metasedimentary matrix

Quartzite (River Cobble) (Quartzite (predominantly SiO2)) — metamorphic

Quartzite (River Cobble)

Quartzite (predominantly SiO2)

Basalt (Vesicular) (Extrusive mafic igneous rock; primarily (Ca, Na)(Mg, Fe, Al)(Si, Al)2O6 with (Ca, Na)(Al, Si)4O8) — igneous

Basalt (Vesicular)

Extrusive mafic igneous rock; primarily (Ca, Na)(Mg, Fe, Al)(Si, Al)2O6 with (Ca, Na)(Al, Si)4O8

Greenstone (Greenschist) (Greenschist (composed of Chlorite, Epidote, and Actinolite)) — metamorphic

Greenstone (Greenschist)

Greenschist (composed of Chlorite, Epidote, and Actinolite)

Sandstone (with Lichen) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (with Lichen)

Arenite (composed primarily of SiO2)

Grey Agate (Banded Chalcedony) (Agate (Silicon Dioxide - SiO2)) — mineral

Grey Agate (Banded Chalcedony)

Agate (Silicon Dioxide - SiO2)

Quartzite (Quartzite (primarily Silicon Dioxide, SiO2)) — metamorphic

Quartzite

Quartzite (primarily Silicon Dioxide, SiO2)

Chert (Chalk-associated Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Chalk-associated Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Limestone (Fossiliferous) (Calcium Carbonate (CaCO3)) — sedimentary

Limestone (Fossiliferous)

Calcium Carbonate (CaCO3)