Rock Identifier

Category

Igneous, Sedimentary, Or Metamorphic (Mineral Based)

Browse igneous, sedimentary, or metamorphic (mineral based) specimens identified by the Rock Identifier community.

Quartz pebble (Silicon Dioxide (SiO2)) — mineral

Quartz pebble

Silicon Dioxide (SiO2)

Folded Schist / Gneiss (Metamorphic Rock) (Regional Metaphoric Folded Outcrop (predominantly Schist/Gneiss)) — metamorphic

Folded Schist / Gneiss (Metamorphic Rock)

Regional Metaphoric Folded Outcrop (predominantly Schist/Gneiss)

Banded Gneiss (Gneiss (High-grade Regional Metamorphic Rock)) — metamorphic

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Banded Gneiss (Gneiss (High-grade Regional Metamorphic Rock)) — metamorphic

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Bornite (Peacock Ore) (Bornite (Cu5FeS4)) — mineral

Bornite (Peacock Ore)

Bornite (Cu5FeS4)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Black Tourmaline (Schorl) (Schorl (Na(Fe^2+)3Al6(Si6O18)(BO3)3(OH)4)) — Mineral

Black Tourmaline (Schorl)

Schorl (Na(Fe^2+)3Al6(Si6O18)(BO3)3(OH)4)

Milky Quartz (Quartz (Silica / Silicon Dioxide), SiO2) — mineral

Milky Quartz

Quartz (Silica / Silicon Dioxide), SiO2

Milky Quartz (Quartz (Silica / Silicon Dioxide, SiO2)) — mineral

Milky Quartz

Quartz (Silica / Silicon Dioxide, SiO2)

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Gneiss (Metamorphic Rock) (Gneiss (high-grade regional metamorphic rock)) — metamorphic

Gneiss (Metamorphic Rock)

Gneiss (high-grade regional metamorphic rock)

Fluorite (Green Fluorite on Host Rock) (Fluorite (Calcium Fluoride, CaF2)) — mineral

Fluorite (Green Fluorite on Host Rock)

Fluorite (Calcium Fluoride, CaF2)

Granite Gneiss (High-grade regional metamorphic rock (Quartz-Feldspar Gneiss)) — metamorphic

Granite Gneiss

High-grade regional metamorphic rock (Quartz-Feldspar Gneiss)

Milky Quartz with Iron Staining (Silicon Dioxide (SiO2)) — mineral

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Quartz (specifically Milky Quartz/Quartzite) (Silicon Dioxide (SiO2)) — Mineral

Quartz (specifically Milky Quartz/Quartzite)

Silicon Dioxide (SiO2)

Chert (Jasper variety) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Chert (Jasper variety)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Fossiliferous Limestone (containing Brachiopods) (Biogenic Limestone (Calcium Carbonate, CaCO3)) — sedimentary

Fossiliferous Limestone (containing Brachiopods)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Pink Granite (Gneissic transition) (Pink Biotite Granite) — igneous

Pink Granite (Gneissic transition)

Pink Biotite Granite

Chert (and associated Sedimentary rocks) (Microcrystalline Silica (SiO2)) — sedimentary

Chert (and associated Sedimentary rocks)

Microcrystalline Silica (SiO2)

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Banded Gneiss (Gneiss (High-grade Metamorphic Rock)) — metamorphic

Banded Gneiss

Gneiss (High-grade Metamorphic Rock)

Natural Gemstone Cabochons (Ruby, Moonstone, Emerald, Citrine) (Ruby (Al2O3:Cr), Moonstone (KAlSi3O8), Emerald (Be3Al2(SiO3)6:Cr), Citrine (SiO2)) — mineral

Natural Gemstone Cabochons (Ruby, Moonstone, Emerald, Citrine)

Ruby (Al2O3:Cr), Moonstone (KAlSi3O8), Emerald (Be3Al2(SiO3)6:Cr), Citrine (SiO2)

Banded Gneiss (Gneiss (High-grade Regional Metamorphic Rock)) — metamorphic

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Quartz (Milky/Gravel variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Gravel variety)

Silicon Dioxide (SiO2)

Mica Schist (Schist (primarily Muscovite and Biotite mica)) — metamorphic

Mica Schist

Schist (primarily Muscovite and Biotite mica)

Quartz Pebble (Silicon Dioxide (SiO2)) — Mineral / Sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Mineral / Sedimentary

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Puddingstone (Conglomerate) (Conglomerate (clastic sedimentary rock)) — sedimentary

Puddingstone (Conglomerate)

Conglomerate (clastic sedimentary rock)

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Concrete (Anthropogenic Sedimentary Conglomerate (Cement mixture: typically Ca2SiO4, Ca3SiO5, Ca3Al2O6)) — sedimentary (artificial)

Concrete

Anthropogenic Sedimentary Conglomerate (Cement mixture: typically Ca2SiO4, Ca3SiO5, Ca3Al2O6)

sedimentary (artificial)

Petoskey Stone (Hexagonaria percarinata (Fossilized Rugose Coral)) — sedimentary (fossilized)

Petoskey Stone

Hexagonaria percarinata (Fossilized Rugose Coral)

sedimentary (fossilized)

Graphite Schist (C (Carbonaceous Schist)) — metamorphic

Graphite Schist

C (Carbonaceous Schist)

Chrysocolla in Matrix (Hydrated copper phyllosilicate mineral (Cu,Al)2H2Si2O5(OH)4·nH2O) — mineral

Chrysocolla in Matrix

Hydrated copper phyllosilicate mineral (Cu,Al)2H2Si2O5(OH)4·nH2O

Weathered Quartzite or Chert Pebble (Silicon Dioxide (SiO2)) — metamorphic or sedimentary

Weathered Quartzite or Chert Pebble

Silicon Dioxide (SiO2)

metamorphic or sedimentary

Mica Schist with Pyrite (Muscovite/Biotite Schist (Complex Silicate)) — metamorphic

Mica Schist with Pyrite

Muscovite/Biotite Schist (Complex Silicate)

Gneiss (Gneiss (High-grade regional metamorphic rock)) — metamorphic

Gneiss

Gneiss (High-grade regional metamorphic rock)

Chert (Limestone-based) (Silicon dioxide (SiO2)) — sedimentary

Chert (Limestone-based)

Silicon dioxide (SiO2)

Garnet (Almandine/Pyrope series) (Silicate mineral (Almandine: Fe3Al2Si3O12; Pyrope: Mg3Al2Si3O12)) — mineral

Garnet (Almandine/Pyrope series)

Silicate mineral (Almandine: Fe3Al2Si3O12; Pyrope: Mg3Al2Si3O12)

Nephrite Jade (Nephrite (a variety of the mineral actinolite within the amphibole group); Chemical Formula: Ca2(Mg,Fe)5Si8O22(OH)2) — Mineral

Nephrite Jade

Nephrite (a variety of the mineral actinolite within the amphibole group); Chemical Formula: Ca2(Mg,Fe)5Si8O22(OH)2

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

White Quartz (Milky Quartz)

Quartz (Silicon Dioxide, SiO2)