Rock Identifier

Category

Igneous

Browse igneous specimens identified by the Rock Identifier community.

Gold Ore (Auriferous Quartz and Sulfide Mineralization in Host Rock) — igneous

Gold Ore

Auriferous Quartz and Sulfide Mineralization in Host Rock

Diamond in Kimberlite (Diamond (C in Kimberlite)) — igneous

Diamond in Kimberlite

Diamond (C in Kimberlite)

Granite (Phaneritic Felsic Intrusive Rock (Granite)) — Igneous

Granite

Phaneritic Felsic Intrusive Rock (Granite)

Labradorite (Larvikite variety) (Feldspar (Plagioclase series), (Na,Ca)(Si,Al)4O8) — igneous

Labradorite (Larvikite variety)

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

Wishing Stone (Basalt with Quartz Vein) (Basalt containing a microcrystalline quartz (SiO2) or calcite vein) — igneous

Wishing Stone (Basalt with Quartz Vein)

Basalt containing a microcrystalline quartz (SiO2) or calcite vein

Basalt River Cobble (Basalt (Aphanitic Mafic Volcanic Rock)) — igneous

Basalt River Cobble

Basalt (Aphanitic Mafic Volcanic Rock)

Pumice (Pumice (a vesicular volcanic glass)) — igneous

Pumice

Pumice (a vesicular volcanic glass)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Amygdaloidal Rhyolite (Rhyolite (felsic volcanic rock) with amygdules) — igneous

Amygdaloidal Rhyolite

Rhyolite (felsic volcanic rock) with amygdules

Diabase (Greenstone) (Diabase (Dolerite)) — igneous

Diabase (Greenstone)

Diabase (Dolerite)

Mahogany Obsidian (Volcanic glass (SiO2 + Fe2O3)) — igneous

Mahogany Obsidian

Volcanic glass (SiO2 + Fe2O3)

Scoria (Scoria (Vesicular Basalt)) — igneous

Scoria

Scoria (Vesicular Basalt)

Scoria (Lava Rock) (Mafic extrusive volcanic rock (Scientific formula varies based on mineral content: primarily SiO2, MgO, and FeO)) — igneous

Scoria (Lava Rock)

Mafic extrusive volcanic rock (Scientific formula varies based on mineral content: primarily SiO2, MgO, and FeO)

Porphyritic Andesite (Porphyritic intermediate volcanic rock (Andesite)) — Igneous

Porphyritic Andesite

Porphyritic intermediate volcanic rock (Andesite)

Obsidian (Obsidian (principally SiO2)) — igneous

Obsidian

Obsidian (principally SiO2)

River Rock (Basalt/Greywacke) (Aphanitic Basalt or Lithic Sandstone (Greywacke)) — igneous

River Rock (Basalt/Greywacke)

Aphanitic Basalt or Lithic Sandstone (Greywacke)

Granodiorite (Granodiorite) — igneous

Granodiorite

Granodiorite

Basalt with Amygdules (Amygdaloidal Basalt) — igneous

Basalt with Amygdules

Amygdaloidal Basalt

Granite (Granite (Phaneritic Quartz-Feldspar intrusive rock)) — Igneous

Granite

Granite (Phaneritic Quartz-Feldspar intrusive rock)

Obsidian Arrowhead (Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)) — igneous

Obsidian Arrowhead

Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)

Basalt Pebble (Basalt) — igneous

Basalt Pebble

Basalt

Porphyritic Basalt (Chinese Writing Stone) (Porphyritic Basalt with Feldspar Phenocrysts) — igneous

Porphyritic Basalt (Chinese Writing Stone)

Porphyritic Basalt with Feldspar Phenocrysts

Basalt (Basalt (Mafic volcanic rock)) — Igneous

Basalt

Basalt (Mafic volcanic rock)

Vesicular Basalt (Iron-rich) (Scoriaceous Basalt / Oxidized Vesicular Basalt) — igneous

Vesicular Basalt (Iron-rich)

Scoriaceous Basalt / Oxidized Vesicular Basalt

Obsidian (Black) (Obsidian (approx. 70–75% SiO2)) — igneous

Obsidian (Black)

Obsidian (approx. 70–75% SiO2)

Obsidian (Volcanic glass (SiO2 - Silicon Dioxide with impurities)) — igneous

Obsidian

Volcanic glass (SiO2 - Silicon Dioxide with impurities)

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

Black Obsidian

Volcanic Glass (predominantly SiO2, Silicon Dioxide)

Granite (Phaneritic plutonic rock (approx. 20-60% quartz, 35-90% feldspar)) — igneous

Granite

Phaneritic plutonic rock (approx. 20-60% quartz, 35-90% feldspar)

Pumice (Pumice (Vesicular Rhyolite/Andesite)) — igneous

Pumice

Pumice (Vesicular Rhyolite/Andesite)

Mahogany Obsidian (Volcanic Glass with Hematite/Magnetite inclusions) — igneous

Mahogany Obsidian

Volcanic Glass with Hematite/Magnetite inclusions

Chondrite Meteorite Fragment (Ordinary Chondrite (L or H type)) — igneous

Chondrite Meteorite Fragment

Ordinary Chondrite (L or H type)

Diorite (Diorite) — igneous

Diorite

Diorite

Granite (Phaneritic Plutonic Rock (High Silica content)) — igneous

Granite

Phaneritic Plutonic Rock (High Silica content)

Basalt Pebble (Basalt) — igneous

Basalt Pebble

Basalt

Pink Granite (Phaneritic Acidic Plutonic Rock (primarily K-feldspar, quartz, and plagioclase)) — Igneous

Pink Granite

Phaneritic Acidic Plutonic Rock (primarily K-feldspar, quartz, and plagioclase)

Vesicular Basalt (Vesicular Basalt (Aphanitic Mafic Rock)) — igneous

Vesicular Basalt

Vesicular Basalt (Aphanitic Mafic Rock)

Basalt (Basalt) — igneous

Basalt

Basalt

Basaltic Scoria (Scoria (Vesicular Basalt/Andesite)) — igneous

Basaltic Scoria

Scoria (Vesicular Basalt/Andesite)

Scoria (Basaltic) (Vesicular Basalt) — igneous

Scoria (Basaltic)

Vesicular Basalt

Snowflake Obsidian (Volcanic glass with Cristobalite inclusions (70–75% SiO2)) — Igneous

Snowflake Obsidian

Volcanic glass with Cristobalite inclusions (70–75% SiO2)

Obsidian (Apache Tear) (Volcanic Glass (Amorphous Silicon Dioxide, SiO2)) — igneous

Obsidian (Apache Tear)

Volcanic Glass (Amorphous Silicon Dioxide, SiO2)

Granite (with Beryl/Aquamarine) (Granite (Feldspar, Quartz, Mica, and Beryl Be3Al2Si6O18)) — igneous

Granite (with Beryl/Aquamarine)

Granite (Feldspar, Quartz, Mica, and Beryl Be3Al2Si6O18)