Rock Identifier

Category

Man Made Material (Simulated Mineral)

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

Learn about Man Made Material (Simulated Mineral) in the encyclopedia

Opalite

Goldstone

Blue Goldstone

Dunite

Zincite

Claystone

Carbonatite

Marl

Dalmatian Jasper

Dalmatian Jasper

Mint Obsidian

Crimson Obsidian

Lherzolite

Quartz geode or drusy quartz cluster (Quartz (silicon dioxide, SiO₂), likely microcrystalline quartz lining a cavity) — mineral

Quartz geode or drusy quartz cluster

Quartz (silicon dioxide, SiO₂), likely microcrystalline quartz lining a cavity

Milky quartz (Quartz (silicon dioxide, SiO₂)) — mineral

Milky quartz

Quartz (silicon dioxide, SiO₂)

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

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Rhodonite (in matrix) (Rhodonite (Mn,Fe,Mg,Ca)SiO3) — Mineral

Rhodonite (in matrix)

Rhodonite (Mn,Fe,Mg,Ca)SiO3

Precious Opal (Hydrated Silica (SiO2·nH2O)) — mineral

Precious Opal

Hydrated Silica (SiO2·nH2O)

Sunstone (Plagioclase feldspar (with Copper or Hematite inclusions)) — mineral

Sunstone

Plagioclase feldspar (with Copper or Hematite inclusions)

Amazonite (Potassium Feldspar (Microcline), K(AlSi3O8)) — mineral

Amazonite

Potassium Feldspar (Microcline), K(AlSi3O8)

Rounded quartz-rich pebble (Likely milky quartz or quartzite (SiO₂)) — mineral

Rounded quartz-rich pebble

Likely milky quartz or quartzite (SiO₂)

Brecciated jasper/chalcedony (iron-stained silica) (Microcrystalline quartz, SiO₂, with iron-oxide inclusions) — mineral

Brecciated jasper/chalcedony (iron-stained silica)

Microcrystalline quartz, SiO₂, with iron-oxide inclusions

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

Milky Quartz

Quartz (Silicon Dioxide) - SiO2

Milky Quartz (Tumbled Pebble) (Silicon Dioxide (SiO2)) — mineral

Milky Quartz (Tumbled Pebble)

Silicon Dioxide (SiO2)

Petrified Wood (Silicified wood (SiO2)) — fossil

Petrified Wood

Silicified wood (SiO2)

Botryoidal chalcedony (possibly agate/geode material) (Microcrystalline quartz, SiO₂; commonly chalcedony with quartz-lined cavities and iron-oxide staining) — mineral

Botryoidal chalcedony (possibly agate/geode material)

Microcrystalline quartz, SiO₂; commonly chalcedony with quartz-lined cavities and iron-oxide staining

Quartz pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz pebble

Silicon dioxide (SiO2)

Sandstone (Sedimentary Rock (Quartz arenite / Lithic sandstone)) — sedimentary

Sandstone

Sedimentary Rock (Quartz arenite / Lithic sandstone)

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

Sandstone (Quartzose)

Arenite (composed primarily of SiO2)

Quartz Pebble (Water-worn) (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble (Water-worn)

Silicon Dioxide (SiO2)

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

Sandstone

Arenite (composed primarily of SiO2)

Honey/brown agate (chalcedony) (Microcrystalline quartz, SiO₂; likely translucent agate or chalcedony) — mineral

Honey/brown agate (chalcedony)

Microcrystalline quartz, SiO₂; likely translucent agate or chalcedony

Chalcedony (Silicon Dioxide (SiO2)) — mineral

Chalcedony

Silicon Dioxide (SiO2)

Chalcedony (Silicon Dioxide (SiO2)) — mineral

Chalcedony

Silicon Dioxide (SiO2)

Staurolite-bearing mica schist (probable) (Mica schist composed chiefly of muscovite/biotite, quartz, and likely staurolite or garnet) — metamorphic

Staurolite-bearing mica schist (probable)

Mica schist composed chiefly of muscovite/biotite, quartz, and likely staurolite or garnet

Serpentinite (Serpentinite; chiefly serpentine-group minerals (lizardite, chrysotile, antigorite), commonly with magnetite and minor talc) — metamorphic

Serpentinite

Serpentinite; chiefly serpentine-group minerals (lizardite, chrysotile, antigorite), commonly with magnetite and minor talc

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

Chert (Chalcedony/Agate)

Microcrystalline Quartz (SiO2)

Banded Agate (Agate (chalcedony variety of Silicon Dioxide, SiO2)) — mineral

Banded Agate

Agate (chalcedony variety of Silicon Dioxide, SiO2)

Coarse-grained Granite (Granitoid (Felsic Plutonic Rock)) — igneous

Coarse-grained Granite

Granitoid (Felsic Plutonic Rock)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Petrified Wood (Silicified wood (primarily quartz, SiO2)) — sedimentary

Petrified Wood

Silicified wood (primarily quartz, SiO2)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Granite Pebble (Granite (Felsic intrusive igneous rock)) — igneous

Granite Pebble

Granite (Felsic intrusive igneous rock)

Red Sandstone (Arenite (typically with iron oxide/hematite cement)) — sedimentary

Red Sandstone

Arenite (typically with iron oxide/hematite cement)

Geode with Quartz/Chalcedony (Silicon Dioxide (SiO2)) — sedimentary

Geode with Quartz/Chalcedony

Silicon Dioxide (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Olivine ((Mg,Fe)2SiO4) — mineral

Olivine

(Mg,Fe)2SiO4

Petrified Wood (Silicified Wood (SiO2)) — mineral

Petrified Wood

Silicified Wood (SiO2)

White calcite (likely tumbled calcite or marble fragment) (Calcite, calcium carbonate (CaCO₃); if the specimen is granular and rock-like, it may be marble, a calcite-rich metamorphic rock) — mineral

White calcite (likely tumbled calcite or marble fragment)

Calcite, calcium carbonate (CaCO₃); if the specimen is granular and rock-like, it may be marble, a calcite-rich metamorphic rock

Red Sandstone (Old Red Sandstone) (Ferruginous Sandstone (SiO2 + Fe2O3)) — sedimentary

Red Sandstone (Old Red Sandstone)

Ferruginous Sandstone (SiO2 + Fe2O3)

Tumbled chalcedony (likely pale agate or quartz pebble) (Microcrystalline silica, SiO₂ (chalcedony; possibly quartz-rich agate)) — mineral

Tumbled chalcedony (likely pale agate or quartz pebble)

Microcrystalline silica, SiO₂ (chalcedony; possibly quartz-rich agate)

Sandstone Pebble (Sandstone (SiO2 rich clastic rock)) — sedimentary

Sandstone Pebble

Sandstone (SiO2 rich clastic rock)

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

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Fossil Shark Tooth (Chondrichthyes (class)) — fossil

Fossil Shark Tooth

Chondrichthyes (class)