Amygdaloidal Basalt
Extrusive Igneous Rock with Amygdules
Category
Browse mineral in igneous rock specimens identified by the Rock Identifier community.
Amygdaloidal Basalt
Extrusive Igneous Rock with Amygdules
Granite
Phaneritic Felsic Igneous Rock
Agate (Carnelian Agate with Quartz Matrix)
Silicon Dioxide (SiO2)
Granite
Granite (Felsic Plutonic Rock)
Granite
Granite (Phaneritic igneous rock)
Porphyritic Igneous Rock / Granite or Rhyolite Porphyry
Porphyritic intrusive/extrusive igneous rock
Granite
Felsic intrusive igneous rock
Gabbro
Gabbro
Clear Quartz
Silicon dioxide (SiO2)
Basalt
Mafic Igneous Rock
Dalmation Stone (often called Dalmatian Jasper)
Peralkaline Rock (Microgranite/Aplite), SiO2 with inclusions of Arfvedsonite
Likely quartz-bearing rock or mineral fragment
Indeterminate; possibly quartz (SiO₂) with iron-oxide staining and darker matrix
Granite
Granite; chiefly quartz, feldspar, and mica
Weathered granite fragment
Granite, primarily quartz, feldspar, and mica
Uncertain small tan mineral/rock fragment
Indeterminate from image; possibly feldspar-rich rock or calcite
Diorite
Intermediate plutonic igneous rock
Granite
Intrusive Felsic Igneous Rock
Diorite
Intermediate Phaneritic Igneous Rock
Granite
Felsic intrusive igneous rock
Granite Cobble
Plutonic Igneous Rock (Granitic)
Biotite Granite
Phaneritic Felsic Igneous Rock
Granite
Granite (a common igneous rock)
Granite
Felsic intrusive igneous rock
Granite
Granite (Plutonic Igneous Rock)
Granite
Felsic intrusive igneous rock
Basalt
Extrusive Igneous Rock (Mafic)
Granite
Phaneritic Igneous Rock (Granite)
Granite
Phaneritic intrusive igneous rock
Granite
Felsic intrusive igneous rock
Granite
Felsic intrusive igneous rock
Granite
Granite (Phaneritic Igneous Rock)
Granite
Phaneritic Felsic Igneous Rock
Dalmatian Jasper
Feldspar porphyry (Microcline and Quartz with Arfvedsonite spots)
Magnetite
Magnetite (Fe3O4)
Tumbled sodalite
Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂
Magnetite Ore
Magnetite (Fe3O4)
Mixed Tumbled Rocks and Minerals Collection
Mixed Minerals and Rocks (Quartz, Feldspar, Jasper, Agate, Lapis Lazuli, Sodalite, Rose Quartz, Fluorite, etc.)
Quartz-rich rock fragment
Likely quartz vein material, predominantly quartz (SiO₂); identification is tentative from the image
Vesicular Basalt (Scoria)
Basalt (Extrusive Igneous Rock)
Granite
Granite (Phaneritic intrusive igneous rock)
Sodalite
Sodalite, Na8(Al6Si6O24)Cl2
Granite
Felsic intrusive igneous rock