Rock Identifier

Category

Mineraloid (Man Made Origin)

Browse mineraloid (man made origin) specimens identified by the Rock Identifier community.

Learn about Mineraloid (Man Made Origin) in the encyclopedia

Opalite

Opalite

Shungite

Shungite

Oregon Opal

Oregon Opal

Map Jasper

Map Jasper

Oregon Sunstone

Oregon Sunstone

Goldstone

Goldstone

Blue Goldstone

Blue Goldstone

Mandarin Garnet

Mandarin Garnet

Andalusite

Andalusite

Zincite

Zincite

Quartzite Sandstone

Quartzite Sandstone

Marl

Marl

Pearl (Calcium Carbonate (CaCO3) - Aragonite/Calcite) — mineral

Pearl

Calcium Carbonate (CaCO3) - Aragonite/Calcite

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

Chert or Jasper

Microcrystalline Quartz (SiO2)

Granodiorite / Granite (Weathered) (Granodiorite) — Igneous

Granodiorite / Granite (Weathered)

Granodiorite

Quartz (Milky/Clear Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Clear Quartz)

Silicon Dioxide (SiO2)

Quartz (Smoky/Milky variety with matrix) (Silicon Dioxide (SiO2)) — mineral

Quartz (Smoky/Milky variety with matrix)

Silicon Dioxide (SiO2)

Chalk (Carbonate rock (mainly CaCO3)) — sedimentary

Chalk

Carbonate rock (mainly CaCO3)

Quartz (Smoky/Clear variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Smoky/Clear variety)

Silicon Dioxide (SiO2)

Quartz (Milky or White Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or White Quartz)

Silicon Dioxide (SiO2)

Quartz (Milky/Common variant) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Common variant)

Silicon Dioxide (SiO2)

White Quartz (Silicon Dioxide (SiO2)) — mineral

White Quartz

Silicon Dioxide (SiO2)

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

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Quartz (Milky/Yellowish Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Yellowish Pebble)

Silicon Dioxide (SiO2)

Quartzite (Metamorphic Rock (Mainly SiO2)) — metamorphic

Quartzite

Metamorphic Rock (Mainly SiO2)

Coquina (Biogenic Limestone (Calcium Carbonate, CaCO3)) — sedimentary

Coquina

Biogenic Limestone (Calcium Carbonate, CaCO3)

Red Tiger Eye (or Polished Jasper Gneiss) (Silicon dioxide with crocidolite inclusions (SiO2)) — metamorphic

Red Tiger Eye (or Polished Jasper Gneiss)

Silicon dioxide with crocidolite inclusions (SiO2)

Granite (Granite (a plutonic rock)) — Igneous

Granite

Granite (a plutonic rock)

Emerald (Beryl (Be₃Al₂Si₆O₁₈), specifically the green variety colored by trace amounts of chromium or vanadium.) — Mineral

Emerald

Beryl (Be₃Al₂Si₆O₁₈), specifically the green variety colored by trace amounts of chromium or vanadium.

Chert (Cherty Shale / Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Cherty Shale / Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Sandstone (Arenite (mostly SiO2)) — sedimentary

Sandstone

Arenite (mostly SiO2)

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

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

Sandstone (Quartzose)

Arenite (primarily SiO2)

Granite (Granite (Mainly Quartz SiO2, Feldspar KAlSi3O8, and Mica KAl2(AlSi3O10)(OH)2)) — Igneous

Granite

Granite (Mainly Quartz SiO2, Feldspar KAlSi3O8, and Mica KAl2(AlSi3O10)(OH)2)

Chert (Silicon dioxide (SiO2)) — Sedimentary

Chert

Silicon dioxide (SiO2)

Pearl and Garnet Glass (Calcium Carbonate (CaCO3) for pearl; Silicon Dioxide (SiO2) for glass) — mineral and glass

Pearl and Garnet Glass

Calcium Carbonate (CaCO3) for pearl; Silicon Dioxide (SiO2) for glass

mineral and glass

Smoky Quartz (Smoky Quartz (SiO2)) — mineral

Smoky Quartz

Smoky Quartz (SiO2)

Pearl (Organic gemstone (Calcium carbonate - CaCO3)) — mineral

Pearl

Organic gemstone (Calcium carbonate - CaCO3)

Chert (specifically Flint or Nodular Chert) (Silicon dioxide (SiO2)) — sedimentary

Chert (specifically Flint or Nodular Chert)

Silicon dioxide (SiO2)

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

Sandstone

Arenite (composed primarily of SiO2)

Granodiorite (Granodiorite (phaneritic intrusive igneous rock)) — igneous

Granodiorite

Granodiorite (phaneritic intrusive igneous rock)

Chert (Jasper/Flint var.) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper/Flint var.)

Silicon Dioxide (SiO2)

Chert (often called Flint or River Stone) (Microcrystalline alpha-quartz (SiO2)) — sedimentary

Chert (often called Flint or River Stone)

Microcrystalline alpha-quartz (SiO2)

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

Chert (Flint)

Silicon Dioxide (SiO2)

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

Chert (Flint)

Silicon Dioxide (SiO2)

Red Jasper (Silicon Dioxide (SiO2) with Hematite (Fe2O3)) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite (Fe2O3)

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

Chert (Chert / Flint Variety)

Microcrystalline / Cryptocrystalline Quartz (SiO2)

Granite (Intrusive Igneous Rock (Granitic)) — igneous

Granite

Intrusive Igneous Rock (Granitic)

Sandstone (Arenite (with iron oxide cement)) — sedimentary

Sandstone

Arenite (with iron oxide cement)

Quartz (Drusy/Crystalline variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Drusy/Crystalline variety)

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

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

Chert (Flint)

Silicon Dioxide (SiO2)

Sandstone (Arenite (SiO2, often with CaCO3 or Fe2O3 cement)) — sedimentary

Sandstone

Arenite (SiO2, often with CaCO3 or Fe2O3 cement)

Chert (Chert (SiO2)) — sedimentary

Chert

Chert (SiO2)