Rock Identifier

Category

Anthropogenic (Man Made Material)

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

Learn about Anthropogenic (Man Made Material) in the encyclopedia

Opalite

Goldstone

Peat

Map Jasper

Blue Goldstone

Mandarin Garnet

Mandarin Garnet

Dunite

Andalusite

Zincite

Marl

Limonite

Diamond

Limonite (Iron Ore) (Limonite (FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Sandstone (with Iron Staining) (Clastic sedimentary rock (primarily Quartz with Limonite/Goethite staining)) — sedimentary

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily Quartz with Limonite/Goethite staining)

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

Peridot

Olivine ((Mg,Fe)2SiO4)

Blue quartzite or blue aventurine glass-like aggregate (Quartzite, predominantly SiO₂ (identification uncertain from image)) — metamorphic

Blue quartzite or blue aventurine glass-like aggregate

Quartzite, predominantly SiO₂ (identification uncertain from image)

Fossilized Tooth (Vertebrate Fossilized Tooth (Mineralized Biogenic Material)) — fossil

Fossilized Tooth

Vertebrate Fossilized Tooth (Mineralized Biogenic Material)

Vuggy Quartz on Matrix (Silicon Dioxide (SiO2)) — mineral

Vuggy Quartz on Matrix

Silicon Dioxide (SiO2)

Flint (or Chert) (Microcrystalline quartz (SiO2)) — sedimentary

Flint (or Chert)

Microcrystalline quartz (SiO2)

Chert (Flint) (Chert (Cryptocrystalline silicon dioxide, SiO2)) — sedimentary

Chert (Flint)

Chert (Cryptocrystalline silicon dioxide, SiO2)

Chert / Flint (Microcrystalline Quartz (SiO2)) — sedimentary

Chert / Flint

Microcrystalline Quartz (SiO2)

Fossilized Bone Fragment (Vertebrate Fossil) — fossil

Fossilized Bone Fragment

Vertebrate Fossil

Limonite (Iron Ore) (Limonite (FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Quartz-rich pegmatite with green mica or chlorite (Granitic pegmatite; chiefly quartz (SiO₂), with feldspar and probable muscovite/chlorite) — igneous

Quartz-rich pegmatite with green mica or chlorite

Granitic pegmatite; chiefly quartz (SiO₂), with feldspar and probable muscovite/chlorite

Quartz / Chalcedony (Silicon Dioxide (SiO2)) — mineral

Quartz / Chalcedony

Silicon Dioxide (SiO2)

Limonite (Iron Ore) (Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Jasper (Silicon Dioxide (SiO2)) — mineral

Jasper

Silicon Dioxide (SiO2)

Dark flint or chert fragment (Microcrystalline quartz (SiO₂), likely flint/chert) — sedimentary

Dark flint or chert fragment

Microcrystalline quartz (SiO₂), likely flint/chert

Weathered vesicular stone, possibly pumice or scoria (Vesicular volcanic rock; likely pumice (highly vesicular rhyolitic material) or scoria (basaltic material)) — igneous

Weathered vesicular stone, possibly pumice or scoria

Vesicular volcanic rock; likely pumice (highly vesicular rhyolitic material) or scoria (basaltic material)

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

Limestone Gravel

Sedimentary Calcium Carbonate (CaCO3)

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

Chert (Flint)

Silicon Dioxide (SiO2)

Thunderegg (Agate or Quartz Geode) (Silica-filled rhyolitic nodule (SiO2)) — sedimentary

Thunderegg (Agate or Quartz Geode)

Silica-filled rhyolitic nodule (SiO2)

Flint Pebble (SiO2 (Microcrystalline Quartz / Chalcedony)) — sedimentary

Flint Pebble

SiO2 (Microcrystalline Quartz / Chalcedony)

Tumbled green aventurine (probable) (Quartzite dominated by quartz (SiO₂), with green mica/fuchsite or chlorite inclusions) — mineral

Tumbled green aventurine (probable)

Quartzite dominated by quartz (SiO₂), with green mica/fuchsite or chlorite inclusions

Flint or chert (Microcrystalline quartz (SiO₂), commonly with chalcedony) — sedimentary

Flint or chert

Microcrystalline quartz (SiO₂), commonly with chalcedony

Green Turban Shell (Polished) (Turbo marmoratus (Aragonite/Calcite)) — mineral

Green Turban Shell (Polished)

Turbo marmoratus (Aragonite/Calcite)

Amber (Succinite) — Mineraloid

Amber

Succinite

Fossilized Gastropod Internal Mold (Steinkern (Mollusca: Gastropoda)) — sedimentary

Fossilized Gastropod Internal Mold

Steinkern (Mollusca: Gastropoda)

Sandstone or Limestone (Sedimentary Rock) — Sedimentary

Sandstone or Limestone

Sedimentary Rock

Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

Limestone with Calcite Veins (Sedimentary Calcium Carbonate (CaCO3)) — sedimentary

Limestone with Calcite Veins

Sedimentary Calcium Carbonate (CaCO3)

Granite (Granite (Feldspar-Quartz-Mica Intrusive)) — igneous

Granite

Granite (Feldspar-Quartz-Mica Intrusive)

Sandstone (Sedimentary Rock (Quartz arenite/Arkose)) — sedimentary

Sandstone

Sedimentary Rock (Quartz arenite/Arkose)

Jasper (Silicon Dioxide (Microcrystalline Quartz, SiO2)) — sedimentary

Jasper

Silicon Dioxide (Microcrystalline Quartz, SiO2)

Quartz pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz pebble

Silicon dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Crinoid Stem Fossil (Crinoida (columnal ossicles)) — fossil

Crinoid Stem Fossil

Crinoida (columnal ossicles)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Sandstone (Sedimentary Clastic Rock) — sedimentary

Sandstone

Sedimentary Clastic Rock