Rock Identifier

Category

Sedimentary And Igneous (Mixed)

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

Moonstone (Orthoclase (KAlSi3O8) with inclusions of Albite (NaAlSi3O8)) — mineral

Moonstone

Orthoclase (KAlSi3O8) with inclusions of Albite (NaAlSi3O8)

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

Labradorite (Schiller Spar)

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

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

Porphyry (likely Porphyritic Andesite or Basalt)

Porphyritic Igneous Rock

Granite (Granite (Mainly Quartz: SiO2, Feldspar: KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8, and Mica)) — igneous

Granite

Granite (Mainly Quartz: SiO2, Feldspar: KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8, and Mica)

Porphyry (Porphyritic Rock) — igneous

Porphyry

Porphyritic Rock

Olivine (in Peridotite/Dunite form) (Magnesium Iron Silicate (Mg,Fe)2SiO4) — igneous

Olivine (in Peridotite/Dunite form)

Magnesium Iron Silicate (Mg,Fe)2SiO4

Basalt with Iron Oxidation (Amygdaloidal Basalt (silicate rock primarily plagioclase, pyroxene, and olivine)) — igneous

Basalt with Iron Oxidation

Amygdaloidal Basalt (silicate rock primarily plagioclase, pyroxene, and olivine)

Basalt (Basalt (Aphanitic mafic volcanic rock)) — igneous

Basalt

Basalt (Aphanitic mafic volcanic rock)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Basalt (Basalt (composition mainly of Plagioclase feldspar, Pyroxene, and Olivine)) — igneous

Basalt

Basalt (composition mainly of Plagioclase feldspar, Pyroxene, and Olivine)

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

Basalt

Basalt (Aphanitic Mafic Igneous Rock)

Olivine in Basalt (Peridotite / Forsterite ((Mg,Fe)2SiO4)) — igneous

Olivine in Basalt

Peridotite / Forsterite ((Mg,Fe)2SiO4)

Scoria (Lava Rock) (Scoria) — igneous

Scoria (Lava Rock)

Scoria

Granite Pebble (Granite) — igneous

Granite Pebble

Granite

Pink Granite (Phaneritic Acidic Igneous Rock (primarily SiO2, Al2O3, K2O)) — igneous

Pink Granite

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

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

Basalt

Basalt (Aphanitic Mafic Igneous Rock)

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Basalt (Basalt (composition of plagioclase, pyroxene, and olivine)) — igneous

Basalt

Basalt (composition of plagioclase, pyroxene, and olivine)

Basalt (Basalt (Mafic Extrusive)) — igneous

Basalt

Basalt (Mafic Extrusive)

Basalt (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Basalt (Arrowhead form) (Extrusive mafic igneous rock) — igneous

Basalt (Arrowhead form)

Extrusive mafic igneous rock

Basalt with Vesicle/Vug (Basalt (Aphanitic Mafic Igneous Rock)) — igneous

Basalt with Vesicle/Vug

Basalt (Aphanitic Mafic Igneous Rock)

Basalt (Basalt (Aphanitic-to-porphyritic mafic volcanic rock)) — igneous

Basalt

Basalt (Aphanitic-to-porphyritic mafic volcanic rock)

Basalt (Basalt) — igneous

Basalt

Basalt

Basalt (Basalt (Volcanic Mafic Rock)) — igneous

Basalt

Basalt (Volcanic Mafic Rock)

Basalt Pebble (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Basalt Pebble

Basalt (Mafic Extrusive Igneous Rock)

Basalt (Basalt (SiO2 percentage between 45% and 52%)) — igneous

Basalt

Basalt (SiO2 percentage between 45% and 52%)

Basalt (Weathered Pebble) (Extrusive mafic rock (primarily Plagioclase Feldspar and Pyroxene)) — igneous

Basalt (Weathered Pebble)

Extrusive mafic rock (primarily Plagioclase Feldspar and Pyroxene)

Granite (Granite (Mainly Quartz, Alkali Feldspar, and Plagioclase)) — igneous

Granite

Granite (Mainly Quartz, Alkali Feldspar, and Plagioclase)

Granite or Granodiorite (Weathered) (Granite) — Igneous

Granite or Granodiorite (Weathered)

Granite

Granite (Weathered) (Granitic intrusive rock) — igneous

Granite (Weathered)

Granitic intrusive rock

Gold Sheen Obsidian (Volcanic Glass (Amorphous Silica with Magnetite inclusions)) — igneous

Gold Sheen Obsidian

Volcanic Glass (Amorphous Silica with Magnetite inclusions)

Granite Pebble (Granite (composition of Quartz, Alkali Feldspar, and Plagioclase)) — igneous

Granite Pebble

Granite (composition of Quartz, Alkali Feldspar, and Plagioclase)

Granite Pebble (Felsic intrusive igneous rock) — igneous

Granite Pebble

Felsic intrusive igneous rock

Snowflake Obsidian (Volcanic glass containing Spherulites (SiO2)) — igneous

Snowflake Obsidian

Volcanic glass containing Spherulites (SiO2)

Tektite (Indochinite) (Tektite (SiO2 + Al2O3, Glassy Melts)) — igneous

Tektite (Indochinite)

Tektite (SiO2 + Al2O3, Glassy Melts)

River Stone (Basalt Porphyry) (Porphyritic Basalt) — igneous

River Stone (Basalt Porphyry)

Porphyritic Basalt

Basalt (Mafic Igneous Rock (composed primarily of Pyroxene and Plagioclase Feldspar)) — igneous

Basalt

Mafic Igneous Rock (composed primarily of Pyroxene and Plagioclase Feldspar)

River Cobble (Basaltic/Andesitic) (Mafic Igneous Porphyritic Rock) — igneous

River Cobble (Basaltic/Andesitic)

Mafic Igneous Porphyritic Rock

Pumice (Pumice (a highly vesicular volcanic rock)) — igneous

Pumice

Pumice (a highly vesicular volcanic rock)

Granite (Granite) — igneous

Granite

Granite