Rock Identifier

Category

Organic Materia (Not A Rock Or Mineral)

Browse organic materia (not a rock or mineral) specimens identified by the Rock Identifier community.

Learn about Organic Materia (Not A Rock Or Mineral) in the encyclopedia

Rock Salt

Rock Gypsum

Coral Rock

Asphalt Rock

Calc-Silicate Rock

Calc-Silicate Rock

Talc-carbonate Rock

Talc-carbonate Rock

Emerald in Matrix

Emerald in Matrix

Aquamarine Matrix

Aquamarine Matrix

Sapropel

Halite

Black Shale

Bituminous Shale

Bituminous Shale

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Granite Pebble (Intrusive Igneous Rock) — igneous

Granite Pebble

Intrusive Igneous Rock

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Chert (River Siltstone/Flint) (Chert (SiO2)) — sedimentary

Chert (River Siltstone/Flint)

Chert (SiO2)

Quartz pebble (Silicon Dioxide (SiO2)) — mineral

Quartz pebble

Silicon Dioxide (SiO2)

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

Porphyritic Basalt or Porphyritic Andesite (Porphyritic volcanic rock) — igneous

Porphyritic Basalt or Porphyritic Andesite

Porphyritic volcanic rock

Limonite Concretion (FeO(OH)·nH2O (Hydrated Iron Oxide)) — sedimentary

Limonite Concretion

FeO(OH)·nH2O (Hydrated Iron Oxide)

Emerald in Matrix (Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities) — mineral

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Quartz in Limonite-rich Matrix (Silicon Dioxide (SiO2) with Goethite/Limonite FeO(OH)·nH2O) — Mineral in Sedimentary/Secondary host

Quartz in Limonite-rich Matrix

Silicon Dioxide (SiO2) with Goethite/Limonite FeO(OH)·nH2O

Mineral in Sedimentary/Secondary host

Rough Apatite in Matrix (Fluorapatite / Chlorapatite / Hydroxylapatite (Ca5(PO4)3(F,Cl,OH))) — mineral

Rough Apatite in Matrix

Fluorapatite / Chlorapatite / Hydroxylapatite (Ca5(PO4)3(F,Cl,OH))

Manganese Oxide Crust on Limestone (Manganese Oxides (e.g., Pyrolusite MnO2 or Romanechite) on CaCO3) — sedimentary

Manganese Oxide Crust on Limestone

Manganese Oxides (e.g., Pyrolusite MnO2 or Romanechite) on CaCO3

Quartz Vein in Host Rock (Quartz (SiO2) in Mafic or Sedimentary Matrix) — igneous

Quartz Vein in Host Rock

Quartz (SiO2) in Mafic or Sedimentary Matrix

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartzite with Epidote Vein (Metamorphosed Quartz Sandstone with Hydrothermal Vein) — metamorphic

Quartzite with Epidote Vein

Metamorphosed Quartz Sandstone with Hydrothermal Vein

Chert (often referred to as Flint) (Chert (Microcrystalline Quartz, SiO2)) — sedimentary

Chert (often referred to as Flint)

Chert (Microcrystalline Quartz, SiO2)

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

Chert (Chert / Flint)

Silicon Dioxide (SiO2)

Shale (Sedimentary rock composed of clay minerals and quartz) — sedimentary

Shale

Sedimentary rock composed of clay minerals and quartz

Gneiss (Gneiss (Metamorphic rock)) — metamorphic

Gneiss

Gneiss (Metamorphic rock)

Amygdaloidal Basalt with Quartz Veining (Basalt (Extrusive Igneous Rock) with Quartz (SiO2) veining) — igneous

Amygdaloidal Basalt with Quartz Veining

Basalt (Extrusive Igneous Rock) with Quartz (SiO2) veining

Red Jasper (Red Jasper (variety of Chalcedony, SiO₂)) — Mineral

Red Jasper

Red Jasper (variety of Chalcedony, SiO₂)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Sandstone (Arenite (SiO2 dominant)) — sedimentary

Sandstone

Arenite (SiO2 dominant)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Jasper (Silicon dioxide (SiO2) with impurities, microcrystalline quartz) — sedimentary

Jasper

Silicon dioxide (SiO2) with impurities, microcrystalline quartz

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Agate Geode (Silicon Dioxide (SiO2)) — mineral

Agate Geode

Silicon Dioxide (SiO2)

Wavellite with Quartz (Al3(PO4)2(OH,F)3 & SiO2) — mineral

Wavellite with Quartz

Al3(PO4)2(OH,F)3 & SiO2

Megalodon Shark Tooth (Otodus megalodon) — fossil

Megalodon Shark Tooth

Otodus megalodon

Sandstone (Clastic sedimentary rock) — sedimentary

Sandstone

Clastic sedimentary rock

Sandstone (Arenite (SiO2 predominantly)) — sedimentary

Sandstone

Arenite (SiO2 predominantly)

Blue Goldstone (Man-made glass with cobalt and metal flecks) — man-made glass

Blue Goldstone

Man-made glass with cobalt and metal flecks

Shale (Shale (clastic sedimentary rock composed of silt and clay-sized particles)) — sedimentary

Shale

Shale (clastic sedimentary rock composed of silt and clay-sized particles)

Chert (Flint Nodules) (Sedimentary cryptocrystalline quartz (SiO2)) — sedimentary

Chert (Flint Nodules)

Sedimentary cryptocrystalline quartz (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Sandstone (Sedimentary Rock (Quartz arenite)) — sedimentary

Sandstone

Sedimentary Rock (Quartz arenite)

Chert (varieties include Flint and Jasper) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (varieties include Flint and Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Mixed Tumbled Rocks and Minerals Collection (Mixed Minerals and Rocks (Quartz, Feldspar, Jasper, Agate, Lapis Lazuli, Sodalite, Rose Quartz, Fluorite, etc.)) — mineral

Mixed Tumbled Rocks and Minerals Collection

Mixed Minerals and Rocks (Quartz, Feldspar, Jasper, Agate, Lapis Lazuli, Sodalite, Rose Quartz, Fluorite, etc.)

Sandstone pebble (Sandstone (mainly Quartz, SiO2)) — sedimentary

Sandstone pebble

Sandstone (mainly Quartz, SiO2)