Rock Identifier

Category

Sedimentary And Igneous (Mixed)

Browse sedimentary and igneous (mixed) specimens identified by the Rock Identifier community.

Snowflake Obsidian (Volcanic glass containing Spherulite inclusions (primarily Cristobalite, SiO2)) — igneous

Snowflake Obsidian

Volcanic glass containing Spherulite inclusions (primarily Cristobalite, SiO2)

Lunar Meteorite (Feldspathic Breccia) (Achondrite, Lunar Meteorite (Feldspathic Breccia)) — igneous

Lunar Meteorite (Feldspathic Breccia)

Achondrite, Lunar Meteorite (Feldspathic Breccia)

Coarse-grained Granite (Granitoid (KAlSi3O8 + SiO2 + NaAlSi3O8)) — igneous

Coarse-grained Granite

Granitoid (KAlSi3O8 + SiO2 + NaAlSi3O8)

Pink Granite (Granite (Phaneritic felsic intrusive igneous rock)) — igneous

Pink Granite

Granite (Phaneritic felsic intrusive igneous rock)

Diorite (Diorite (Intermediate intrusive igneous rock)) — igneous

Diorite

Diorite (Intermediate intrusive igneous rock)

Porphyritic Rhyolite (Red Porp) (Porphyritic Rhyolite (Felsic volcanic rock)) — igneous

Porphyritic Rhyolite (Red Porp)

Porphyritic Rhyolite (Felsic volcanic rock)

Granite (with Almandine Garnet inclusions) (Granite composed primarily of Quartz (SiO2), K-Feldspar (KAlSi3O8), and Almandine Garnet (Fe3Al2(SiO4)3)) — igneous

Granite (with Almandine Garnet inclusions)

Granite composed primarily of Quartz (SiO2), K-Feldspar (KAlSi3O8), and Almandine Garnet (Fe3Al2(SiO4)3)

Obsidian (Obsidian (Volcanic Glass, SiO2 + impurities)) — igneous

Obsidian

Obsidian (Volcanic Glass, SiO2 + impurities)

Obsidian (Volcanic Glass (predominantly SiO2)) — igneous

Obsidian

Volcanic Glass (predominantly SiO2)

Diorite (Phaneritic Intrusive Igneous Rock (composed of Plagioclase feldspar, Hornblende, and Biotite)) — igneous

Diorite

Phaneritic Intrusive Igneous Rock (composed of Plagioclase feldspar, Hornblende, and Biotite)

Amygdaloidal Basalt (Amygdaloidal Basalt (Mafic silicate with secondary mineral inclusions)) — Igneous

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic silicate with secondary mineral inclusions)

Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

Pumice (Pumice (volcanic glass formed of highly vesicular rough textured rock)) — igneous

Pumice

Pumice (volcanic glass formed of highly vesicular rough textured rock)

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

Obsidian

Volcanic Glass (SiO2 - Silicon Dioxide with impurities)

Obsidian (Volcanic glass (SiO2-rich extrusive igneous rock)) — igneous

Obsidian

Volcanic glass (SiO2-rich extrusive igneous rock)

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

Diabase (Greenstone)

Diabase (Dolerite)

Porphyritic Rhyolite (Cookie Stone) (Porphyritic Rhyolite (SiO2, with phenocrysts)) — igneous

Porphyritic Rhyolite (Cookie Stone)

Porphyritic Rhyolite (SiO2, with phenocrysts)

Yooperlite (Sodalite-bearing Syenite) (Sodalite-rich Syenite (Na8(Al6Si6O24)Cl2)) — igneous

Yooperlite (Sodalite-bearing Syenite)

Sodalite-rich Syenite (Na8(Al6Si6O24)Cl2)

Granite (Granite (composed primarily of Quartz SiO2, Alkali Feldspar (K,Na)AlSi3O8, and Plagioclase Feldspar)) — igneous

Granite

Granite (composed primarily of Quartz SiO2, Alkali Feldspar (K,Na)AlSi3O8, and Plagioclase Feldspar)

Pink Granite (Potassium-rich Granite) (Phaneritic Felsic Igneous Rock (primarily SiO2, Al2O3, K2O)) — Igneous

Pink Granite (Potassium-rich Granite)

Phaneritic Felsic Igneous Rock (primarily SiO2, Al2O3, K2O)

Basalt with Quartz Veins (Basalt (complex silicate) with Quartz (SiO2) intrusions) — igneous

Basalt with Quartz Veins

Basalt (complex silicate) with Quartz (SiO2) intrusions

Basalt (Amygdaloidal) (Amygdaloidal Basalt) — igneous

Basalt (Amygdaloidal)

Amygdaloidal Basalt

Granite (Pink/Red variety) (Phaneritic Felsic Intrusive Igneous Rock (composed primarily of Quartz, K-Feldspar, and Plagioclase)) — igneous

Granite (Pink/Red variety)

Phaneritic Felsic Intrusive Igneous Rock (composed primarily of Quartz, K-Feldspar, and Plagioclase)

Obsidian (Obsidian (principally SiO2/Silicon dioxide)) — igneous

Obsidian

Obsidian (principally SiO2/Silicon dioxide)

Diorite (Phaneritic intermediate plutonic rock) — Igneous

Diorite

Phaneritic intermediate plutonic rock

Granite (Phaneritic Igneous Rock (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)) — igneous

Granite

Phaneritic Igneous Rock (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)

Granite (Granite) — igneous

Granite

Granite

Porphyritic Basalt (Porphyritic Basalt (with Plagioclase phenocrysts)) — igneous

Porphyritic Basalt

Porphyritic Basalt (with Plagioclase phenocrysts)

Slag (Industrial Glass) (Anthropogenic Vitreous Slag (Post-industrial byproduct)) — igneous

Slag (Industrial Glass)

Anthropogenic Vitreous Slag (Post-industrial byproduct)

Graphic Granite (Zebra Rock) (Pegmatitic Granite (composed of Quartz and K-Feldspar)) — igneous

Graphic Granite (Zebra Rock)

Pegmatitic Granite (composed of Quartz and K-Feldspar)

Porphyry (Porphyritic Igneous Rock (likely Porphyritic Andesite or Basalt)) — igneous

Porphyry

Porphyritic Igneous Rock (likely Porphyritic Andesite or Basalt)

Tektite (Indochinite) (Tektite (Amorphous Silica Glass), SiO2(Al2O3)) — igneous

Tektite (Indochinite)

Tektite (Amorphous Silica Glass), SiO2(Al2O3)

Granodiorite with Quartz Veining (Granodiorite (containing Plagioclase Feldspar, Quartz, and Biotite/Hornblende) with Quartz (SiO2) veins) — igneous

Granodiorite with Quartz Veining

Granodiorite (containing Plagioclase Feldspar, Quartz, and Biotite/Hornblende) with Quartz (SiO2) veins

Coarse-grained Quartz with Feldspar inclusions (Crystalline Quartz (SiO2) with Orthoclase/Plagioclase Feldspar inclusions) — igneous

Coarse-grained Quartz with Feldspar inclusions

Crystalline Quartz (SiO2) with Orthoclase/Plagioclase Feldspar inclusions

Red Scoria (Lava Rock) (Scoria (Extrusive Igneous Rock / Mafic composition)) — igneous

Red Scoria (Lava Rock)

Scoria (Extrusive Igneous Rock / Mafic composition)

Garnet Rhyolite (Rhyolite (high-silica volcanic rock) with almandine/spessartine garnet) — igneous

Garnet Rhyolite

Rhyolite (high-silica volcanic rock) with almandine/spessartine garnet

Obsidian (Volcanic Glass (Primary component: SiO2)) — igneous

Obsidian

Volcanic Glass (Primary component: SiO2)

Obsidian (Volcanic glass (SiO2 - Silicon Dioxide)) — Igneous

Obsidian

Volcanic glass (SiO2 - Silicon Dioxide)

Red Rhyolite Porphyry (Rhyolite (Porphyritic texture)) — igneous

Red Rhyolite Porphyry

Rhyolite (Porphyritic texture)

Granite with Orthoclase and Hematite Staining (Phaneritic Felsic Igneous Rock (primarily SiO2 with KAlSi3O8)) — igneous

Granite with Orthoclase and Hematite Staining

Phaneritic Felsic Igneous Rock (primarily SiO2 with KAlSi3O8)

Feldspathic Granite (likely Syenite or Granite Pegmatite) (Phaneritic Acidic Igneous Rock (KAlSi3O8 dominant with SiO2)) — igneous

Feldspathic Granite (likely Syenite or Granite Pegmatite)

Phaneritic Acidic Igneous Rock (KAlSi3O8 dominant with SiO2)

Granodiorite (Granodiorite (phaneritic intrusive igneous rock)) — igneous

Granodiorite

Granodiorite (phaneritic intrusive igneous rock)