Rock Identifier

Category

Sedimentary And Igneous (Mixed)

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

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

Vesicular Basalt

Vesicular Basalt (Aphanitic Mafic Rock)

River Cobble (likely Basalt or Rhyolite) (Extrusive Igneous Rock (Mafic or Intermediate)) — igneous

River Cobble (likely Basalt or Rhyolite)

Extrusive Igneous Rock (Mafic or Intermediate)

Pink Granite (Granite (Felsic Plutonic Rock)) — igneous

Pink Granite

Granite (Felsic Plutonic Rock)

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

Pink Granite

Granite (Phaneritic igneous rock)

Pumice (Vesicular volcanic glass) — igneous

Pumice

Vesicular volcanic glass

Apache Tear (Obsidian) (Hydrated volcanic glass (SiO2 with inclusions)) — igneous

Apache Tear (Obsidian)

Hydrated volcanic glass (SiO2 with inclusions)

Diorite (River Cobble) (Intrusive Igneous Diorite) — igneous

Diorite (River Cobble)

Intrusive Igneous Diorite

Strawberry Quartz (Quartz with Hematite inclusions (SiO2 + Fe2O3)) — mineral

Strawberry Quartz

Quartz with Hematite inclusions (SiO2 + Fe2O3)

Chrysocolla in Matrix (Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4' nH2O on Quartz/Feldspar matrix) — mineral

Chrysocolla in Matrix

Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4' nH2O on Quartz/Feldspar matrix

Obsidian (Volcanic Glass (SiO2)) — igneous

Obsidian

Volcanic Glass (SiO2)

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

Basalt River Pebble

Basalt (Aphanitic Mafic Volcanic Rock)

Basalt (Basalt) — igneous

Basalt

Basalt

Scoria (Vesicular Basalt) (Scoria (Extrusive Igneous Rock)) — igneous

Scoria (Vesicular Basalt)

Scoria (Extrusive Igneous Rock)

Scoria (Lava Rock) (Scoria) — igneous

Scoria (Lava Rock)

Scoria

Porphyritic Basalt (with Pyrolusite or Iron-oxide staining) (Porphyritic Basalt (Mafic Extrusive)) — igneous

Porphyritic Basalt (with Pyrolusite or Iron-oxide staining)

Porphyritic Basalt (Mafic Extrusive)

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

Granite

Phaneritic Intrusive Igneous Rock (Granite)

Diorite (Salt and Pepper Rock) (Diorite) — igneous

Diorite (Salt and Pepper Rock)

Diorite

Basalt (Basalt (Mafic volcanic rock, primarily Plagioclase and Pyroxene)) — igneous

Basalt

Basalt (Mafic volcanic rock, primarily Plagioclase and Pyroxene)

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

Basalt (with Plagioclase Phenocrysts)

Porphyritic Basalt

Pumice (specifically a water-worn, weathered variety) (Vesicular volcanic glass) — igneous

Pumice (specifically a water-worn, weathered variety)

Vesicular volcanic glass

Scoria (Lava Rock) (Scoriaceous Basalt) — igneous

Scoria (Lava Rock)

Scoriaceous Basalt

Basalt (Basalt (Mafic Extrusive)) — igneous

Basalt

Basalt (Mafic Extrusive)

Pink Granite (Phaneritic Felsic Igneous Rock (composed primarily of K-Feldspar, Quartz, and Mica)) — igneous

Pink Granite

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

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

Gabbro

Gabbro (mafic intrusive igneous rock)

Mica-rich Pegmatite (Pegmatite (rich in Muscovite and Biotite)) — igneous

Mica-rich Pegmatite

Pegmatite (rich in Muscovite and Biotite)

Porphyritic Andesite (Andesite (Intermediate Extrusive Volcanic Rock)) — igneous

Porphyritic Andesite

Andesite (Intermediate Extrusive Volcanic Rock)

Basalt (Vesicular/Scoriaceous) (Extrusive Mafic Volcanic Rock (Primarily Plagioclase Feldspar and Pyroxene)) — Igneous

Basalt (Vesicular/Scoriaceous)

Extrusive Mafic Volcanic Rock (Primarily Plagioclase Feldspar and Pyroxene)

Granite (Granite (Mainly Quartz SiO2 and Feldspar KAlSi3O8)) — igneous

Granite

Granite (Mainly Quartz SiO2 and Feldspar KAlSi3O8)

Basalt with Olivine Phenocrysts (Porphyritic Basalt (containing Mg2SiO4 - Fe2SiO4)) — igneous

Basalt with Olivine Phenocrysts

Porphyritic Basalt (containing Mg2SiO4 - Fe2SiO4)

Basalt (River Pebble) (Basalt (extrusive mafic rock)) — igneous

Basalt (River Pebble)

Basalt (extrusive mafic rock)

Basalt with Epidote/Chlorite (Amygdaloidal Basalt (SiO2 with (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)))) — igneous

Basalt with Epidote/Chlorite

Amygdaloidal Basalt (SiO2 with (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)))

Diorite (Intrusive Igneous Diorite (intermediate composition)) — igneous

Diorite

Intrusive Igneous Diorite (intermediate composition)

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

Granite (with Beryl/Aquamarine)

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

Dalmation Jasper (Dalmation Stone) (Perthitic feldspar-quartz-amphibole rock) — igneous

Dalmation Jasper (Dalmation Stone)

Perthitic feldspar-quartz-amphibole rock

Diorite (Polished Cobble) (Diorite (Intermediate intrusive igneous rock)) — Igneous

Diorite (Polished Cobble)

Diorite (Intermediate intrusive igneous rock)

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

Black Obsidian

Volcanic Glass (SiO2 + impurities)

Granite Cobble (Granite (Phaneritic Igneous Rock)) — igneous

Granite Cobble

Granite (Phaneritic Igneous Rock)

Porphyry (Porphyritic Andesite/Dacite) — igneous

Porphyry

Porphyritic Andesite/Dacite

Granodiorite (Granodiorite (Quartz + Plagioclase + Alkali Feldspar + Biotite/Hornblende)) — igneous

Granodiorite

Granodiorite (Quartz + Plagioclase + Alkali Feldspar + Biotite/Hornblende)

Diorite (Diorite) — igneous

Diorite

Diorite

Granite (Phaneritic Felsic Igneous Rock (Main minerals: SiO2, KAlSi3O8, NaAlSi3O8)) — igneous

Granite

Phaneritic Felsic Igneous Rock (Main minerals: SiO2, KAlSi3O8, NaAlSi3O8)

Diorite (Diorite (an intrusive igneous rock)) — igneous

Diorite

Diorite (an intrusive igneous rock)