Rock Identifier

Category

Man Made Object (Simulant)

Browse man made object (simulant) specimens identified by the Rock Identifier community.

Learn about Man Made Object (Simulant) in the encyclopedia

Opalite

Yttrium Aluminum Garnet

Yttrium Aluminum Garnet

Goldstone

Map Jasper

Blue Goldstone

Mandarin Garnet

Mandarin Garnet

Andalusite

Zincite

Transvaal Jade

Marl

Dunite

Coquina

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

Smoky Quartz Geode

Silicon Dioxide (SiO2)

Greywacke (Greywacke (Lithofeldspathic Sandstone)) — sedimentary

Greywacke

Greywacke (Lithofeldspathic Sandstone)

Scoria (Lava Rock) (Scoria) — igneous

Scoria (Lava Rock)

Scoria

Quartz (likely macrocrystalline variety) (Quartz (SiO₂)) — Mineral

Quartz (likely macrocrystalline variety)

Quartz (SiO₂)

Sandstone (Ferruginous) (Arenite (with Hematite/Limonite cement)) — sedimentary

Sandstone (Ferruginous)

Arenite (with Hematite/Limonite cement)

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

Sandstone

Arenite (composed primarily of SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

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

Chert (Nodule)

Silicon Dioxide (SiO2)

Quartzite (Quartzite (composed primarily of SiO2)) — metamorphic

Quartzite

Quartzite (composed primarily of SiO2)

Basaltic Tuff / Volcanic Breccia (Pyroclastic Breccia / Lithic Tuff) — igneous

Basaltic Tuff / Volcanic Breccia

Pyroclastic Breccia / Lithic Tuff

Likely chert or flint (Microcrystalline quartz (SiO₂), commonly called chert; exact identification requires testing) — sedimentary

Likely chert or flint

Microcrystalline quartz (SiO₂), commonly called chert; exact identification requires testing

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

Limestone

Limestone (Calcium Carbonate - CaCO3)

Moqui Marble (Shaman Stone) (Ironstone Concretion (Goethite/Hematite Shell)) — sedimentary

Moqui Marble (Shaman Stone)

Ironstone Concretion (Goethite/Hematite Shell)

Chert (Field Stone) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Field Stone)

Silicon Dioxide (SiO2)

Schist (Schist) — metamorphic

Schist

Schist

Chert (or Chalcedony) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (or Chalcedony)

Microcrystalline Quartz (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Amethyst (Druze) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst (Druze)

Silicon Dioxide (SiO2) with iron impurities

Granite Gneiss (Felsic Gneiss (composed of Quartz, Feldspar, and Biotite)) — metamorphic

Granite Gneiss

Felsic Gneiss (composed of Quartz, Feldspar, and Biotite)

Sandstone (Quartzite Pebble) (Arenite / Metamorphosed Sandstone (SiO2)) — sedimentary

Sandstone (Quartzite Pebble)

Arenite / Metamorphosed Sandstone (SiO2)

Granodiorite (Phaneritic intrusive igneous rock (Granodiorite)) — igneous

Granodiorite

Phaneritic intrusive igneous rock (Granodiorite)

Chert (Commonly called Jasper or Flint) (Chert (SiO2)) — sedimentary

Chert (Commonly called Jasper or Flint)

Chert (SiO2)

Chert (Chert Nodule) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (Chert Nodule)

Microcrystalline quartz (SiO2)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Quartz Crystal Cluster in Matrix (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal Cluster in Matrix

Silicon Dioxide (SiO2)

Pegmatite (Igneous Pegmatite) — igneous

Pegmatite

Igneous Pegmatite

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

Ferruginous Sandstone

Clastic Sedimentary Rock (Sandstone with Iron Oxide cement)

Sandstone (likely Ferruginous) (Arenite (SiO2 with iron oxide impurities)) — sedimentary

Sandstone (likely Ferruginous)

Arenite (SiO2 with iron oxide impurities)

Red Sandstone (Ferruginous Sandstone (SiO2 with Fe2O3)) — sedimentary

Red Sandstone

Ferruginous Sandstone (SiO2 with Fe2O3)

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

Scoria (Lava Rock)

Vesicular Basalt / Scoria

Quartz-rich breccia or vein quartz with dark inclusions (Milky quartz (SiO₂), likely brecciated and cemented with iron oxides and dark mica/amphibole minerals) — igneous

Quartz-rich breccia or vein quartz with dark inclusions

Milky quartz (SiO₂), likely brecciated and cemented with iron oxides and dark mica/amphibole minerals

Zoisite with Ruby (Anyolite) (Anyolite (Ca2Al3(SiO4)3(OH) + (Hb, Al, Cr)2O3)) — metamorphic

Zoisite with Ruby (Anyolite)

Anyolite (Ca2Al3(SiO4)3(OH) + (Hb, Al, Cr)2O3)

Polished labradorite (Labradorite, calcium-rich plagioclase feldspar (approximately Ca0.5–0.7Na0.5–0.3Al1.5–1.7Si2.5–2.3O8)) — mineral

Polished labradorite

Labradorite, calcium-rich plagioclase feldspar (approximately Ca0.5–0.7Na0.5–0.3Al1.5–1.7Si2.5–2.3O8)

Diabase (Dolerite) (Diabase or Dolerite) — igneous

Diabase (Dolerite)

Diabase or Dolerite

Tumbled serpentine (Serpentinite; chiefly antigorite, lizardite, and/or chrysotile serpentine-group minerals) — metamorphic

Tumbled serpentine

Serpentinite; chiefly antigorite, lizardite, and/or chrysotile serpentine-group minerals

Blue mineral specimen, likely bornite (“peacock ore”) (Bornite, Cu5FeS4, possibly iridescent chalcopyrite (CuFeS2)) — mineral

Blue mineral specimen, likely bornite (“peacock ore”)

Bornite, Cu5FeS4, possibly iridescent chalcopyrite (CuFeS2)

Muscovite mica (Muscovite, KAl₂(AlSi₃O₁₀)(OH)₂) — mineral

Muscovite mica

Muscovite, KAl₂(AlSi₃O₁₀)(OH)₂

Bloodstone (Heliotrope (cryptocrystalline Quartz SiO2 with Hematite inclusions)) — mineral

Bloodstone

Heliotrope (cryptocrystalline Quartz SiO2 with Hematite inclusions)

Hag Stone (Perforated Sedimentary Rock (typically Chert or Limestone)) — sedimentary

Hag Stone

Perforated Sedimentary Rock (typically Chert or Limestone)

Blue Quartzite (likely dyed) (Silicon dioxide (SiO2) with likely color treatment) — metamorphic

Blue Quartzite (likely dyed)

Silicon dioxide (SiO2) with likely color treatment

Carnelian Agate (Silicon Dioxide (SiO2)) — mineral

Carnelian Agate

Silicon Dioxide (SiO2)