Rock Identifier

Category

Anthropogenic Material (Man Made Rock)

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

Chert (Nodule) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Nodule)

Cryptocrystalline Quartz (SiO2)

sedimentary
Green Chert (Chert (Cryptocrystalline Quartz, SiO2)) — sedimentary

Green Chert

Chert (Cryptocrystalline Quartz, SiO2)

sedimentary
Coquina (Coquina Limestone) — sedimentary

Coquina

Coquina Limestone

sedimentary
Red Jasper (Silicon dioxide (SiO2) with iron inclusions) — sedimentary

Red Jasper

Silicon dioxide (SiO2) with iron inclusions

sedimentary
Jasper (Silicon Dioxide (SiO2) with impurities) — sedimentary

Jasper

Silicon Dioxide (SiO2) with impurities

sedimentary
Fossilized Brachiopod (Phylum Brachiopoda (replaced by Calcite/CaCO3)) — sedimentary

Fossilized Brachiopod

Phylum Brachiopoda (replaced by Calcite/CaCO3)

sedimentary
Limonite (Iron Ore) (Hydrous ferric oxides (FeO(OH)·nH2O)) — sedimentary

Limonite (Iron Ore)

Hydrous ferric oxides (FeO(OH)·nH2O)

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

Chert (Chalcedony)

Microcrystalline Quartz (SiO2)

sedimentary
Chert (specifically Flint or Common Opal fragment) (Cryptocrystalline Silica (SiO2)) — sedimentary

Chert (specifically Flint or Common Opal fragment)

Cryptocrystalline Silica (SiO2)

sedimentary
Chert (Flint) (Chert (SiO2)) — sedimentary

Chert (Flint)

Chert (SiO2)

sedimentary
Sandstone Concretion (Ferruginous Sandstone Concretion) — sedimentary

Sandstone Concretion

Ferruginous Sandstone Concretion

sedimentary
Bicolor Quartz Tumble (Silicon Dioxide (SiO2)) — mineral

Bicolor Quartz Tumble

Silicon Dioxide (SiO2)

mineral
Chert (Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper)

Microcrystalline Quartz (SiO2)

sedimentary
Jasper (Green) (Silicon dioxide (SiO2)) — Mineral/Sedimentary

Jasper (Green)

Silicon dioxide (SiO2)

Mineral/Sedimentary
Petrified Wood (Silicified Wood (primarily SiO2)) — sedimentary

Petrified Wood

Silicified Wood (primarily SiO2)

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

Petrified Wood

Silicified Wood (SiO2)

sedimentary
Chert (Flint) (Cryptocrystalline quartz (SiO2)) — sedimentary

Chert (Flint)

Cryptocrystalline quartz (SiO2)

sedimentary
Nephrite Jade (Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)) — metamorphic

Nephrite Jade

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)

metamorphic
Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

metamorphic
Muscovite Mica (Muscovite (KAl2(AlSi3O10)(OH)2)) — mineral

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

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

Chert (Flint)

Silicon Dioxide (SiO2)

sedimentary
Schist (Mica Schist) — metamorphic

Schist

Mica Schist

metamorphic
Chert (Quartz Variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Quartz Variety)

Silicon Dioxide (SiO2)

sedimentary
Reddish Brown Claystone or Siltstone (Argillite / Siltstone / Claystone) — sedimentary

Reddish Brown Claystone or Siltstone

Argillite / Siltstone / Claystone

sedimentary
Chert Nodules (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Nodules

Microcrystalline Quartz (SiO2)

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

Chert / Jasper

Silicon Dioxide (SiO2)

sedimentary
Dragon Blood Jasper (Lizard Stone/Septarian Chalcedony) (Epidote with Black Hornblende and White Quartz mixture) — metamorphic

Dragon Blood Jasper (Lizard Stone/Septarian Chalcedony)

Epidote with Black Hornblende and White Quartz mixture

metamorphic
Chert (varietal Flint or Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (varietal Flint or Jasper)

Microcrystalline Quartz (SiO2)

sedimentary
Quartz (Milky Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

mineral
Unakite (Epidotized Granite) — metamorphic

Unakite

Epidotized Granite

metamorphic
Sodalite (Sodalite (Na8(Al6Si6O24)Cl2)) — mineral

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

mineral
Pink Granite (Phaneritic Quartz-Feldspar Granite) — igneous

Pink Granite

Phaneritic Quartz-Feldspar Granite

igneous
Chert (Chalcedony/Agate variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Chalcedony/Agate variety)

Microcrystalline Quartz (SiO2)

sedimentary
Larimar (Pectolite (NaCa2Si3O8(OH))) — mineral

Larimar

Pectolite (NaCa2Si3O8(OH))

mineral
Clear Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

mineral
Petrified Wood (Silicified wood (primarily Quartz/Chalcedony, SiO2)) — metamorphic

Petrified Wood

Silicified wood (primarily Quartz/Chalcedony, SiO2)

metamorphic
Blue Chalcedony (Chalcedony (SiO2)) — mineral

Blue Chalcedony

Chalcedony (SiO2)

mineral
Banded Calcite (often sold as Onyx or Mexican Onyx) (Calcite (Calcium Carbonate, CaCO3)) — sedimentary

Banded Calcite (often sold as Onyx or Mexican Onyx)

Calcite (Calcium Carbonate, CaCO3)

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

Chert Concretion

Silicon dioxide (SiO2)

sedimentary
Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

mineral
Mica Schist (Mica Schist (contains Muscovite, Biotite, and Quartz)) — metamorphic

Mica Schist

Mica Schist (contains Muscovite, Biotite, and Quartz)

metamorphic
Gowganda Tillite (Puddingstone) (Glacial Diamictite (Gowganda Formation)) — sedimentary

Gowganda Tillite (Puddingstone)

Glacial Diamictite (Gowganda Formation)

sedimentary