Rock Identifier

Category

Man Made Material (Simulated Mineral)

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

Sandstone (Ferruginous) (Arenite (primarily SiO2 with iron oxide cement)) — sedimentary

Sandstone (Ferruginous)

Arenite (primarily SiO2 with iron oxide cement)

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Banded Calcite (often sold as 'Mexican Onyx') (Calcite (Calcium Carbonate, CaCO3)) — Mineral / Sedimentary Rock

Banded Calcite (often sold as 'Mexican Onyx')

Calcite (Calcium Carbonate, CaCO3)

Mineral / Sedimentary Rock

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

Chert (varietal Flint)

Silicon Dioxide (SiO2)

Brown Jasper (Likely) (Jasper (Cryptocrystalline Silicon Dioxide - SiO2)) — Mineral

Brown Jasper (Likely)

Jasper (Cryptocrystalline Silicon Dioxide - SiO2)

Rose Quartz (Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Rose Quartz (Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Schist (Crystalline Metamorphic Rock (Schistose)) — metamorphic

Schist

Crystalline Metamorphic Rock (Schistose)

Nuummite (Nuummite (Orthorhombic amphiboles: Anthophyllite and Gedrite)) — metamorphic

Nuummite

Nuummite (Orthorhombic amphiboles: Anthophyllite and Gedrite)

Schist (Lepidoblastic Mica Schist) — metamorphic

Schist

Lepidoblastic Mica Schist

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

Banded Calcite (often sold as 'Mexican Onyx' or 'Calcite Onyx')

Calcite (Calcium Carbonate, CaCO3)

Petrified Wood (Silicified wood (Quartz, SiO2)) — metamorphic

Petrified Wood

Silicified wood (Quartz, SiO2)

Conglomerate (Clastic sedimentary rock (Conglomerate)) — sedimentary

Conglomerate

Clastic sedimentary rock (Conglomerate)

Sandstone (Arenite (SiO2 based with various cements)) — sedimentary

Sandstone

Arenite (SiO2 based with various cements)

Chert (with Quartz Vein) (Chert (Siliceous sedimentary rock, predominantly Microcrystalline Quartz SiO2)) — sedimentary

Chert (with Quartz Vein)

Chert (Siliceous sedimentary rock, predominantly Microcrystalline Quartz SiO2)

Sandstone (Arenite (SiO2 based with quartz, feldspar, or lithic fragments)) — sedimentary

Sandstone

Arenite (SiO2 based with quartz, feldspar, or lithic fragments)

Banded Calcite (often sold as 'Travertine' or 'Mexican Onyx') (Calcium Carbonate (CaCO3)) — sedimentary

Banded Calcite (often sold as 'Travertine' or 'Mexican Onyx')

Calcium Carbonate (CaCO3)

Chert (Jasper/Common Opal mix) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Common Opal mix)

Microcrystalline Quartz (SiO2)

Greenschist (Greenschist facies rock (containing chlorite, actinolite, and epidote)) — metamorphic

Greenschist

Greenschist facies rock (containing chlorite, actinolite, and epidote)

Black Obsidian (Volcanic Glass (predominantly SiO2, Silicon Dioxide)) — igneous

Black Obsidian

Volcanic Glass (predominantly SiO2, Silicon Dioxide)

Obsidian (in jewelry setting) (Volcanic Glass (Amorphous Silica)) — igneous

Obsidian (in jewelry setting)

Volcanic Glass (Amorphous Silica)

Golden Healer Quartz (Silicon Dioxide (SiO2) with iron oxide inclusions) — mineral

Golden Healer Quartz

Silicon Dioxide (SiO2) with iron oxide inclusions

Malachite (Copper(II) carbonate hydroxide [Cu2CO3(OH)2]) — mineral

Malachite

Copper(II) carbonate hydroxide [Cu2CO3(OH)2]

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Raw Chunk) (Silicon Dioxide (SiO2)) — mineral

Quartz (Raw Chunk)

Silicon Dioxide (SiO2)

Quartz (likely milky quartz or a stained variety) (Silicon Dioxide (SiO₂)) — Mineral

Quartz (likely milky quartz or a stained variety)

Silicon Dioxide (SiO₂)

Olivine/Peridot (Magnesium Iron Silicate (Mg,Fe)2SiO4) — mineral

Olivine/Peridot

Magnesium Iron Silicate (Mg,Fe)2SiO4

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

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

Petrified Wood

Silicified Wood (primarily SiO2)

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Chalk (Calcium Carbonate (CaCO3)) — sedimentary

Chalk

Calcium Carbonate (CaCO3)

Granite / Gneiss Complex (Felsic Plutonic Rock (Granite) or High-grade Metamorphic Rock (Gneiss)) — igneous/metamorphic

Granite / Gneiss Complex

Felsic Plutonic Rock (Granite) or High-grade Metamorphic Rock (Gneiss)

igneous/metamorphic

Porous Quartzite (Metamorphosed Quartz-rich Sandstone (SiO2)) — metamorphic

Porous Quartzite

Metamorphosed Quartz-rich Sandstone (SiO2)

Biotite Mica in Host Rock (Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2)) — mineral

Biotite Mica in Host Rock

Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2)

Conglomerate (River Rock Aggregate) (Conglomerate (Lithic-clast conglomerate)) — sedimentary

Conglomerate (River Rock Aggregate)

Conglomerate (Lithic-clast conglomerate)

Sandstone (Glacial Cobble) (Arenite / Sedimentary Rock (primarily SiO2)) — sedimentary

Sandstone (Glacial Cobble)

Arenite / Sedimentary Rock (primarily SiO2)

Chalcedony (Cryptocrystalline Quartz (SiO2)) — mineral

Chalcedony

Cryptocrystalline Quartz (SiO2)

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

Chert (Jasper/Chalcedony)

Microcrystalline Quartz (SiO2)

Bauxite (Bauxite (Al(OH)3, AlO(OH))) — sedimentary

Bauxite

Bauxite (Al(OH)3, AlO(OH))

Orthoclase Feldspar (Potassium aluminum silicate (KAlSi3O8)) — mineral

Orthoclase Feldspar

Potassium aluminum silicate (KAlSi3O8)