Rock Identifier

Category

Man Made Rock Like Material

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

Quartz Geode (Silicon Dioxide (SiO2)) — sedimentary

Quartz Geode

Silicon Dioxide (SiO2)

Fossiliferous Chert with Brachiopod Impression (Chert (SiO2) containing Brachiopoda fossil remains) — sedimentary

Fossiliferous Chert with Brachiopod Impression

Chert (SiO2) containing Brachiopoda fossil remains

Sandstone (Ferruginous) (Arenite (primarily SiO2 with Iron Oxide cement)) — sedimentary

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Iron Oxide cement)

Blue Goldstone (Aventurine Glass (Silicon Dioxide infused with Cobalt/Copper)) — Synthetic (Man-made Glass)

Blue Goldstone

Aventurine Glass (Silicon Dioxide infused with Cobalt/Copper)

Synthetic (Man-made Glass)

Sea Glass (Cobalt Blue) (Amorphous Silica (Glass with Cobalt additives)) — Anthropogenic specimen (man-made)

Sea Glass (Cobalt Blue)

Amorphous Silica (Glass with Cobalt additives)

Anthropogenic specimen (man-made)

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Dacite (Dacite (Intermediate volcanic rock)) — igneous

Dacite

Dacite (Intermediate volcanic rock)

Granite (Phaneritic Plutonic Igneous Rock) — igneous

Granite

Phaneritic Plutonic Igneous Rock

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)

Slag (Industrial Glassy Byproduct) (Anthropogenic silicate byproduct (Slag)) — Mineral-like byproduct (often mistaken for igneous rock or meteorite)

Slag (Industrial Glassy Byproduct)

Anthropogenic silicate byproduct (Slag)

Mineral-like byproduct (often mistaken for igneous rock or meteorite)

Sandstone (Quartz Arenite (a common type of sandstone, given the appearance), Arkose, Greywacke (depending on mineralogy)) — Sedimentary Rock

Sandstone

Quartz Arenite (a common type of sandstone, given the appearance), Arkose, Greywacke (depending on mineralogy)

Sedimentary Rock

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Gabbro (Plutonic mafic rock) — igneous

Gabbro

Plutonic mafic rock

Sandstone (Arenite (primarily Quartz, SiO2)) — sedimentary

Sandstone

Arenite (primarily Quartz, SiO2)

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

Sandstone

Arenite (composed primarily of SiO2)

Quartz (Quartz (SiO₂)) — Mineral

Quartz

Quartz (SiO₂)

Jasper (Iron-stained Chert) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Jasper (Iron-stained Chert)

Silicon Dioxide (SiO2) with iron oxide inclusions

Jasper River Stone (Silicon Dioxide with Iron Oxide impurities (SiO2 + Fe2O3)) — sedimentary

Jasper River Stone

Silicon Dioxide with Iron Oxide impurities (SiO2 + Fe2O3)

Granite (Granite (a common type of Felsic Intrusive Igneous Rock)) — Igneous Rock

Granite

Granite (a common type of Felsic Intrusive Igneous Rock)

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

Chert (often called Jasper or Flint in this color variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (often called Jasper or Flint in this color variety)

Silicon Dioxide (SiO2)

Sandstone with trace fossil (Sandstone, possibly with Skolithos or similar trace fossil) — sedimentary

Sandstone with trace fossil

Sandstone, possibly with Skolithos or similar trace fossil

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

Chert / Flint

Silicon Dioxide (SiO2)

Marble (Recrystallized Calcite (CaCO3)) — metamorphic

Marble

Recrystallized Calcite (CaCO3)

Wishing Stone (Sandstone with Quartz Vein) (Arenite with Quartzite intrusion (SiO₂)) — sedimentary

Wishing Stone (Sandstone with Quartz Vein)

Arenite with Quartzite intrusion (SiO₂)

Lapis Lazuli (A metamorphic rock primarily composed of lazurite (Na,Ca)8[(S,SO4,Cl)2|(Al6Si6O24)], calcite (CaCO3), and pyrite (FeS2).) — Mineral

Lapis Lazuli

A metamorphic rock primarily composed of lazurite (Na,Ca)8[(S,SO4,Cl)2|(Al6Si6O24)], calcite (CaCO3), and pyrite (FeS2).

Sandstone (Sandstone (arenite is a more specific geological term for a clean sandstone, while wacke refers to a dirty sandstone with significant matrix)) — Sedimentary

Sandstone

Sandstone (arenite is a more specific geological term for a clean sandstone, while wacke refers to a dirty sandstone with significant matrix)

Petrified Wood (Silicified Wood (primarily Chalcedony or Quartz, SiO2)) — sedimentary

Petrified Wood

Silicified Wood (primarily Chalcedony or Quartz, SiO2)

Rose Quartz (Quartz (SiO₂), specifically a variety of Quartz) — Mineral

Rose Quartz

Quartz (SiO₂), specifically a variety of Quartz

Red Jasper (Jasper (a variety of Chalcedony, SiO₂ with iron oxide inclusions)) — Mineral

Red Jasper

Jasper (a variety of Chalcedony, SiO₂ with iron oxide inclusions)

Red Sandstone (Arenite (Ferruginous Sandstone)) — sedimentary

Red Sandstone

Arenite (Ferruginous Sandstone)

Slate (Slate (foliated metamorphic rock)) — metamorphic

Slate

Slate (foliated metamorphic rock)

Sandstone (Arenite or Sandstone) — Sedimentary Rock

Sandstone

Arenite or Sandstone

Sedimentary Rock

Petrified Wood (Silicified Fossil) (Silicified Wood (SiO2)) — sedimentary

Petrified Wood (Silicified Fossil)

Silicified Wood (SiO2)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Basalt (Basalt) — igneous

Basalt

Basalt

Vesicular Basalt (Pumice-like) (Vesicular Basalt) — igneous

Vesicular Basalt (Pumice-like)

Vesicular Basalt

Biotite (Mica) (K(Mg,Fe)3AlSi3O10(OH,F)2) — mineral

Biotite (Mica)

K(Mg,Fe)3AlSi3O10(OH,F)2

Sandstone (Quartzose Sandstone) (Clastic Sedimentary Rock (primarily SiO2)) — sedimentary

Sandstone (Quartzose Sandstone)

Clastic Sedimentary Rock (primarily SiO2)

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

Basalt

Basalt (Aphanitic Mafic Igneous Rock)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)