Rock Identifier

Category

Igneous And Mineral

Browse igneous and mineral specimens identified by the Rock Identifier community.

Learn about Igneous And Mineral in the encyclopedia

Carbonatite

Glauconite

Hutcheonite

Halite

Sperrylite

Baddeleyite

Anatase

Brookite

Talc

Euxenite

Eltyubyuite

Buergerite

Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

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

Milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Amygdaloidal Basalt (Extrusive Igneous Rock with Secondary Mineral Fillings) — igneous

Amygdaloidal Basalt

Extrusive Igneous Rock with Secondary Mineral Fillings

Quartz with Mica/Host Rock (Silicon Dioxide (SiO2) with Phyllosilicates) — mineral

Quartz with Mica/Host Rock

Silicon Dioxide (SiO2) with Phyllosilicates

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Granite (Intrusive igneous rock) — igneous

Granite

Intrusive igneous rock

Rhyolite (Extrusive igneous rock (felsic)) — igneous

Rhyolite

Extrusive igneous rock (felsic)

Gabbro (River Cobble) (Gabbro (mafic intrusive rock)) — igneous

Gabbro (River Cobble)

Gabbro (mafic intrusive rock)

Vesicular basalt (Basalt, a mafic volcanic rock composed mainly of plagioclase feldspar, pyroxene, and often olivine) — igneous

Vesicular basalt

Basalt, a mafic volcanic rock composed mainly of plagioclase feldspar, pyroxene, and often olivine

Banded Gneiss (Gneiss) — metamorphic

Banded Gneiss

Gneiss

Basalt with Phenocrysts (Extrusive Igneous Rock) — igneous

Basalt with Phenocrysts

Extrusive Igneous Rock

Obsidian (Volcanic Glass (Amorphous silicon dioxide with impurities)) — igneous

Obsidian

Volcanic Glass (Amorphous silicon dioxide with impurities)

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Granite pebble (Granite; predominantly quartz, feldspar, and mica) — igneous

Granite pebble

Granite; predominantly quartz, feldspar, and mica

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

Gneiss

Gneiss (High-grade metamorphic rock)

Quartz (SiO2 (Silicon Dioxide)) — mineral

Quartz

SiO2 (Silicon Dioxide)

Amazonite (KAlSi3O8 (Potassium Aluminum Silicate)) — mineral

Amazonite

KAlSi3O8 (Potassium Aluminum Silicate)

Quartz Crystal Cluster / Quartzite (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal Cluster / Quartzite

Silicon Dioxide (SiO2)

Quartz with Matrix (Silicon Dioxide (SiO2)) — mineral

Quartz with Matrix

Silicon Dioxide (SiO2)

Amygdaloidal Basalt (Amygdaloidal Basalt (containing quartz/agate or zeolite fill)) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt (containing quartz/agate or zeolite fill)

Labradorite ((Ca, Na)(Al, Si)4O8 (Plagioclase Feldspar)) — mineral

Labradorite

(Ca, Na)(Al, Si)4O8 (Plagioclase Feldspar)

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

Small rough mineral/rock fragment (Indeterminate; possibly quartz-bearing rock or weathered feldspar) — mineral

Small rough mineral/rock fragment

Indeterminate; possibly quartz-bearing rock or weathered feldspar

Epidote (Epidote - Ca2(Al2,Fe3+)3(SiO4)3(OH)) — mineral

Epidote

Epidote - Ca2(Al2,Fe3+)3(SiO4)3(OH)

Smoky Quartz with Feldspar (SiO2 (Quartz) with KAlSi3O8 (Feldspar)) — mineral

Smoky Quartz with Feldspar

SiO2 (Quartz) with KAlSi3O8 (Feldspar)

Quartz (Milky and Smoky variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky and Smoky variety)

Silicon Dioxide (SiO2)

Granite Pebble (Granitoid (Plagioclase, Alkali feldspar, Quartz, Biotite/Amphibole)) — igneous

Granite Pebble

Granitoid (Plagioclase, Alkali feldspar, Quartz, Biotite/Amphibole)

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

Gneiss

Gneiss (High-grade metamorphic rock)

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

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Granite (Intrusive igneous rock) — igneous

Granite

Intrusive igneous rock

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

Labradorite (Labradorite (a calcium-enriched sodic plagioclase feldspar mineral - (Ca, Na)(Al, Si)4O8)) — mineral

Labradorite

Labradorite (a calcium-enriched sodic plagioclase feldspar mineral - (Ca, Na)(Al, Si)4O8)

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Likely raw metallic mineral specimen (Unidentified; possibly galena-bearing ore or magnetite-rich rock) — mineral

Likely raw metallic mineral specimen

Unidentified; possibly galena-bearing ore or magnetite-rich rock

Tiny amber-colored crystal or mineral fragment (Indeterminate from image; possibly quartz, citrine, topaz, or iron-stained feldspar) — mineral

Tiny amber-colored crystal or mineral fragment

Indeterminate from image; possibly quartz, citrine, topaz, or iron-stained feldspar

Red garnet crystal cluster (Most likely almandine garnet, Fe₃Al₂(SiO₄)₃; exact species cannot be confirmed from the image alone.) — mineral

Red garnet crystal cluster

Most likely almandine garnet, Fe₃Al₂(SiO₄)₃; exact species cannot be confirmed from the image alone.

Quartz-bearing pegmatitic rock with feldspar (Granitic pegmatite; chiefly quartz (SiO₂), feldspar, and mica) — igneous

Quartz-bearing pegmatitic rock with feldspar

Granitic pegmatite; chiefly quartz (SiO₂), feldspar, and mica

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Pyrite Nodules / Weathered Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite Nodules / Weathered Pyrite

Iron Sulfide (FeS2)

Geode (Quartz / Chalcedony nodule) — sedimentary

Geode

Quartz / Chalcedony nodule