Rock Identifier

Category

Man Made Material

Browse man made material specimens identified by the Rock Identifier community.

Learn about Man Made Material in the encyclopedia

Opalite

Goldstone

Blue Goldstone

Dunite

Zincite

Mint Obsidian

Crimson Obsidian

Lherzolite

Violet Obsidian

Tangerine Obsidian

Pastel Obsidian

Lilac Obsidian

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (Quartzose) (Arenite (SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (SiO2)

Sandstone (Quartzose) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (composed primarily of SiO2)

Diamond (or Diamond Simulant) (Carbon (C)) — gemstone

Diamond (or Diamond Simulant)

Carbon (C)

Serpentinite (Serpentinite (Hydrous magnesium iron phyllosilicate)) — metamorphic

Serpentinite

Serpentinite (Hydrous magnesium iron phyllosilicate)

Agate (Nodule/Chert) (Silicon Dioxide (SiO2)) — sedimentary

Agate (Nodule/Chert)

Silicon Dioxide (SiO2)

Amygdaloidal Basalt (Amygdaloidal Basalt with Secondary Mineral Amygdules) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt with Secondary Mineral Amygdules

Vesicular Basalt (Lava Rock) (Vesicular Basalt (comprising plagioclase feldspar and pyroxene group minerals)) — igneous

Vesicular Basalt (Lava Rock)

Vesicular Basalt (comprising plagioclase feldspar and pyroxene group minerals)

Fluorite (Calcium fluoride (CaF2)) — mineral

Fluorite

Calcium fluoride (CaF2)

Brecciated jasper, possibly rainforest jasper or brecciated rhyolite (Brecciated microcrystalline quartz (SiO₂), commonly called jasper; the green portions may contain epidote, chlorite, or iron-bearing silicates, while red-brown areas are typically hematite or other iron oxides) — sedimentary

Brecciated jasper, possibly rainforest jasper or brecciated rhyolite

Brecciated microcrystalline quartz (SiO₂), commonly called jasper; the green portions may contain epidote, chlorite, or iron-bearing silicates, while red-brown areas are typically hematite or other iron oxides

Olivine (Peridot) (Magnesium Iron Silicate (Mg,Fe)2SiO4) — Mineral

Olivine (Peridot)

Magnesium Iron Silicate (Mg,Fe)2SiO4

Olivine (Peridot when gem-quality) (Magnesium Iron Silicate (Mg,Fe)2SiO4) — mineral

Olivine (Peridot when gem-quality)

Magnesium Iron Silicate (Mg,Fe)2SiO4

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Biotite-bearing granite or granitic gneiss (Quartz–feldspar–biotite assemblage; possibly metamorphosed granite (gneiss)) — igneous

Biotite-bearing granite or granitic gneiss

Quartz–feldspar–biotite assemblage; possibly metamorphosed granite (gneiss)

Ferruginous Sandstone (Clastic Sedimentary Rock (Sandstone with Iron Oxide cement)) — sedimentary

Ferruginous Sandstone

Clastic Sedimentary Rock (Sandstone with Iron Oxide cement)

Olivine (Peridotite) ((Mg,Fe)2SiO4 (Magnesium Iron Silicate)) — igneous

Olivine (Peridotite)

(Mg,Fe)2SiO4 (Magnesium Iron Silicate)

Flint / Chert (Silicon dioxide (Microcrystalline quartz, SiO2)) — sedimentary

Flint / Chert

Silicon dioxide (Microcrystalline quartz, SiO2)

Olivine (Peridot) ((Mg,Fe)2SiO4) — mineral

Olivine (Peridot)

(Mg,Fe)2SiO4

Snowflake Obsidian (Volcanic Glass with Spherulite inclusions (Amorphous SiO2 + Cristobalite)) — igneous

Snowflake Obsidian

Volcanic Glass with Spherulite inclusions (Amorphous SiO2 + Cristobalite)

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

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

Chert (Gravel)

Silicon Dioxide (SiO2)

Limestone (River Pebble) (Calcium Carbonate (CaCO3)) — sedimentary

Limestone (River Pebble)

Calcium Carbonate (CaCO3)

Limestone Cobble (Sedimentary Calcium Carbonate (CaCO3)) — sedimentary

Limestone Cobble

Sedimentary Calcium Carbonate (CaCO3)

Diamond (or Diamond Simulant/Cubic Zirconia) (Carbon (C) - if diamond, or Zirconium dioxide (ZrO2) - if Cubic Zirconia) — mineral

Diamond (or Diamond Simulant/Cubic Zirconia)

Carbon (C) - if diamond, or Zirconium dioxide (ZrO2) - if Cubic Zirconia

Clear Quartz / Diamond (untested) (Silicon Dioxide (SiO2) or Carbon (C)) — mineral

Clear Quartz / Diamond (untested)

Silicon Dioxide (SiO2) or Carbon (C)

Peridot (Olivine) (Olivine, (Mg, Fe)2SiO4) — mineral

Peridot (Olivine)

Olivine, (Mg, Fe)2SiO4

Olivine (Peridotite) ((Mg,Fe)2SiO4 (Magnesium Iron Silicate)) — igneous

Olivine (Peridotite)

(Mg,Fe)2SiO4 (Magnesium Iron Silicate)

Blue topaz (likely treated) (Topaz, Al₂SiO₄(F,OH)₂) — gemstone

Blue topaz (likely treated)

Topaz, Al₂SiO₄(F,OH)₂

Chert (Jasper) (Silicon dioxide (SiO2)) — sedimentary

Chert (Jasper)

Silicon dioxide (SiO2)

Sandstone (Quartzose) (Sandstone (composed primarily of Quartz: SiO2)) — sedimentary

Sandstone (Quartzose)

Sandstone (composed primarily of Quartz: SiO2)

Banded Chert (Silicon Dioxide (SiO2)) — sedimentary

Banded Chert

Silicon Dioxide (SiO2)

Chalcedony (Agate/Chert variety) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate/Chert variety)

Silicon Dioxide (SiO2)

Granite River Stone (Phaneritic Felsic Igneous Rock) — igneous

Granite River Stone

Phaneritic Felsic Igneous Rock

Limonite Concretion (Goonie or Rattlestone) (Limonite (FeO(OH)·nH2O)) — sedimentary

Limonite Concretion (Goonie or Rattlestone)

Limonite (FeO(OH)·nH2O)

Diamond (or Cubic Zirconia simulant) (C (Carbon) or ZrO2 (Zirconium Dioxide)) — gemstone

Diamond (or Cubic Zirconia simulant)

C (Carbon) or ZrO2 (Zirconium Dioxide)

Diamond (faceted) (Carbon (C)) — gemstone

Diamond (faceted)

Carbon (C)

Pink Granite / K-Feldspar (Alkali feldspar granite / Potassium feldspar (Microcline/Orthoclase)) — igneous

Pink Granite / K-Feldspar

Alkali feldspar granite / Potassium feldspar (Microcline/Orthoclase)

Sandstone (Arenite (SiO2 composed primarily of quartz)) — sedimentary

Sandstone

Arenite (SiO2 composed primarily of quartz)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Yellow Ochre / Limonite (Limonite (inter-mixed iron oxides and hydroxides, primarily FeO(OH)·nH2O)) — mineral

Yellow Ochre / Limonite

Limonite (inter-mixed iron oxides and hydroxides, primarily FeO(OH)·nH2O)

Red Scoria (Lava Rock) (Vesicular Basalt / Scoria) — igneous

Red Scoria (Lava Rock)

Vesicular Basalt / Scoria

Sandstone (Arenite (SiO2 principal)) — sedimentary

Sandstone

Arenite (SiO2 principal)