Rock Identifier

Category

Igneous

Browse igneous specimens identified by the Rock Identifier community.

Learn about Igneous in the encyclopedia

Albitite

Alnöite

Andesite

Anorthosite

Apache Tears

Banded Obsidian

Banded Obsidian

Basalt

Black Obsidian

Blue Pearl Granite

Blue Pearl Granite

Boninite

Bostonite

Brown Obsidian

Quartz-rich granite (likely leucocratic granite) (Granite, composed mainly of quartz and feldspar with minor dark minerals) — igneous

Quartz-rich granite (likely leucocratic granite)

Granite, composed mainly of quartz and feldspar with minor dark minerals

Tumbled pink granite (Granite (quartz, feldspar, and mica; exact variety uncertain)) — igneous

Tumbled pink granite

Granite (quartz, feldspar, and mica; exact variety uncertain)

Porphyritic Basalt or Andesite (Porphyritic Basalt or Porphyritic Andesite) — igneous

Porphyritic Basalt or Andesite

Porphyritic Basalt or Porphyritic Andesite

Granite Pebble (Granite (composed primarily of Quartz, Feldspar, and Mica)) — igneous

Granite Pebble

Granite (composed primarily of Quartz, Feldspar, and Mica)

Granite Gravel / Pebbles (Granite (Plutonic Igneous Rock)) — igneous

Granite Gravel / Pebbles

Granite (Plutonic Igneous Rock)

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

Granite (Granite) — igneous

Granite

Granite

Labradorite (in rough matrix) (Labradorite (Plagioclase Feldspar)) — mineral

Labradorite (in rough matrix)

Labradorite (Plagioclase Feldspar)

Quartz with Mica (SiO2 (Quartz) with Potassium aluminum silicate (Muscovite)) — Mineral

Quartz with Mica

SiO2 (Quartz) with Potassium aluminum silicate (Muscovite)

Granite (Granite) — Igneous

Granite

Granite

Quartz with Epidote (Silicon dioxide (SiO2) with Calcium aluminum iron silicate (Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH))) — mineral

Quartz with Epidote

Silicon dioxide (SiO2) with Calcium aluminum iron silicate (Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH))

Pink Quartz (Silicon Dioxide (SiO2)) — mineral

Pink Quartz

Silicon Dioxide (SiO2)

Granite (Granite (a felsic intrusive igneous rock)) — Igneous Rock

Granite

Granite (a felsic intrusive igneous 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)

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

Milky Quartz Pebble

Silicon Dioxide (SiO2)

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

Cloudy Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Sodalite in Quartz (Na8(Al6Si6O24)Cl2 (Sodalite) / SiO2 (Quartz)) — metamorphic

Sodalite in Quartz

Na8(Al6Si6O24)Cl2 (Sodalite) / SiO2 (Quartz)

Rounded gray sandstone or siltstone cobble (Lithified quartz–feldspar–clay sediment; exact petrographic identification requires testing) — sedimentary

Rounded gray sandstone or siltstone cobble

Lithified quartz–feldspar–clay sediment; exact petrographic identification requires testing

Granite (Phaneritic Intrusive Igneous Rock (primarily Quartz, Feldspar, and Mica)) — igneous

Granite

Phaneritic Intrusive Igneous Rock (primarily Quartz, Feldspar, and Mica)

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

Granite (Granite) — igneous

Granite

Granite

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

Granite fragment (Granite) — igneous

Granite fragment

Granite

Granite (Granite (a common type of Felsic Intrusive Igneous Rock)) — Igneous Rock

Granite

Granite (a common type of Felsic Intrusive Igneous Rock)

Faceted red gemstone, likely synthetic ruby or red spinel (Possibly corundum (Al₂O₃, ruby) or spinel (MgAl₂O₄); identity cannot be confirmed from the image) — gemstone

Faceted red gemstone, likely synthetic ruby or red spinel

Possibly corundum (Al₂O₃, ruby) or spinel (MgAl₂O₄); identity cannot be confirmed from the image

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Sunstone (Plagioclase Feldspar (Na,Ca)(Al,Si)4O8) — gemstone

Sunstone

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

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

Labradorite

Labradorite ((Ca,Na)(Al,Si)4O8)

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Porphyry (Rhyolite / Andesite Porphyry Pebble) (Porphyritic Igneous Rock) — igneous

Porphyry (Rhyolite / Andesite Porphyry Pebble)

Porphyritic Igneous Rock

River Stone (likely Basalt or Gabro) (Mafic Igneous Rock) — igneous

River Stone (likely Basalt or Gabro)

Mafic Igneous Rock

Basalt Pebble (Mafic Igneous Basalt) — igneous

Basalt Pebble

Mafic Igneous Basalt

Basalt (Mafic Igneous Rock) — igneous

Basalt

Mafic Igneous Rock

Basalt (Weathered) (Mafic Igneous Rock) — igneous

Basalt (Weathered)

Mafic Igneous Rock

Porphyry (Porphyritic Igneous Rock) — igneous

Porphyry

Porphyritic Igneous Rock

Basalt (Mafic Igneous Rock) — igneous

Basalt

Mafic Igneous Rock

Basalt (with Iron Staining) (Mafic Igneous Rock) — igneous

Basalt (with Iron Staining)

Mafic Igneous Rock

River Pebble (Basalt or Gabbro) (Mafic Igneous Rock) — igneous

River Pebble (Basalt or Gabbro)

Mafic Igneous Rock

Basalt (Mafic Igneous Rock) — igneous

Basalt

Mafic Igneous Rock