Rock Identifier

Category

Sedimentary Or Metamorphic (Base Substrate)

Browse sedimentary or metamorphic (base substrate) specimens identified by the Rock Identifier community.

Amygdaloidal Basalt (Basalt with secondary mineral infilling (commonly SiO2 or Zeolites)) — igneous

Amygdaloidal Basalt

Basalt with secondary mineral infilling (commonly SiO2 or Zeolites)

Basalt with Quartz/Calcite Veining (Basalt (principally Plagioclase and Pyroxene)) — igneous

Basalt with Quartz/Calcite Veining

Basalt (principally Plagioclase and Pyroxene)

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

Vesicular Basalt with Siltstone (Mafic Volcanic Rock (Basaltic Composition)) — igneous

Vesicular Basalt with Siltstone

Mafic Volcanic Rock (Basaltic Composition)

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

Granite (Felsic Plutonic Rock (primarily Quartz, Potassium Feldspar, and Plagioclase)) — igneous

Granite

Felsic Plutonic Rock (primarily Quartz, Potassium Feldspar, and Plagioclase)

Amygdaloidal Basalt (Amygdaloidal Basalt) — Igneous

Amygdaloidal Basalt

Amygdaloidal Basalt

Granite (Granite) — igneous

Granite

Granite

Granite (Granite (Phaneritic Quartz-Feldspar-Biotite rock)) — igneous

Granite

Granite (Phaneritic Quartz-Feldspar-Biotite rock)

Basalt with Weathered Crust (Aphanitic Mafic Igneous Rock (Basalt)) — igneous

Basalt with Weathered Crust

Aphanitic Mafic Igneous Rock (Basalt)

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

Basalt with Olivine (Peridot) (Basalt containing (Mg,Fe)2SiO4) — igneous

Basalt with Olivine (Peridot)

Basalt containing (Mg,Fe)2SiO4

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

Basalt Pebble

Basalt (Mafic Volcanic Rock)

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

Basalt Beach Pebble

Basalt (Aphanitic Mafic Volcanic Rock)

Granodiorite Pebble (Granodiorite) — igneous

Granodiorite Pebble

Granodiorite

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

Vesicular Basalt with Secondary Mineral Infill (Mafic Volcanic Rock (Basalt)) — igneous

Vesicular Basalt with Secondary Mineral Infill

Mafic Volcanic Rock (Basalt)

Granodiorite (Granodiorite (Intermediate to Felsic Intrusive Rock)) — igneous

Granodiorite

Granodiorite (Intermediate to Felsic Intrusive Rock)

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Amygdaloidal Basalt (Basalt with secondary amygdule minerals (likely Epidote or Chlorite)) — igneous

Amygdaloidal Basalt

Basalt with secondary amygdule minerals (likely Epidote or Chlorite)

Basalt Water-Worn Pebble (Aphanitic Mafic Igneous Rock) — igneous

Basalt Water-Worn Pebble

Aphanitic Mafic Igneous Rock

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Granite (Phaneritic plutonic felsic igneous rock) — igneous

Granite

Phaneritic plutonic felsic igneous rock

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Basalt (Basalt) — igneous

Basalt

Basalt

Granite (Granite) — igneous

Granite

Granite

Porphyritic Basalt (with Quartz or Calcite inclusion) (Porphyritic Basalt (Matrix: SiO2/MgO/FeO, Phenocryst: likely Quartz or Calcite)) — igneous

Porphyritic Basalt (with Quartz or Calcite inclusion)

Porphyritic Basalt (Matrix: SiO2/MgO/FeO, Phenocryst: likely Quartz or Calcite)

Granite (White Granite variant) (Phaneritic Plutonic Rock (High-silica Felsic)) — igneous

Granite (White Granite variant)

Phaneritic Plutonic Rock (High-silica Felsic)

Granite (Intrusive igneous felsic rock) — igneous

Granite

Intrusive igneous felsic rock

Basalt (Basalt (Extrusive Mafic Igneous)) — igneous

Basalt

Basalt (Extrusive Mafic Igneous)

Granite Pebble (Granite (Phaneritic intrusive igneous rock consisting of Quartz, Alkali Feldspar, and Plagioclase)) — igneous

Granite Pebble

Granite (Phaneritic intrusive igneous rock consisting of Quartz, Alkali Feldspar, and Plagioclase)

Granite (Granite (Felsic intrusive igneous rock)) — igneous

Granite

Granite (Felsic intrusive igneous rock)

Granite (Granite (Phaneritic igneous rock)) — igneous

Granite

Granite (Phaneritic igneous rock)

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

Granite

Granite (Phaneritic intrusive igneous rock)

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

Basalt (Weathered)

Extrusive Igneous Rock (Mafic composition)

Granite (Phaneritic plutonic rock (primarily Quartz, Feldspar, and Mica)) — igneous

Granite

Phaneritic plutonic rock (primarily Quartz, Feldspar, and Mica)

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

Granodiorite (Granodiorite (containing Quartz, Plagioclase Feldspar, Biotite, and Hornblende)) — igneous

Granodiorite

Granodiorite (containing Quartz, Plagioclase Feldspar, Biotite, and Hornblende)

Basalt with Quartz/Plagioclase Inclusions (Mafic volcanic rock (Basaltic)) — igneous

Basalt with Quartz/Plagioclase Inclusions

Mafic volcanic rock (Basaltic)

Granite (Granitoid) — igneous

Granite

Granitoid

Basalt Scoria (Vesicular Basalt) — igneous

Basalt Scoria

Vesicular Basalt

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

Basalt

Basalt (Mafic Extrusive Igneous Rock)