Pink Granite
Phaneritic plutonic rock (dominated by Alkali Feldspar)
Category
Browse sedimentary and igneous (mixed) specimens identified by the Rock Identifier community.
Pink Granite
Phaneritic plutonic rock (dominated by Alkali Feldspar)
Andesite Porphyry (River Cobble)
Porphyritic Andesite
Andesite Porphyry
Porphyritic Andesite
Basalt
Basalt (Mafic igneous rock)
Vesicular Basalt (or Scoria)
Vesicular Basalt
Basalt River Pebble
Basalt (Mafic volcanic rock)
Basalt
Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
Basalt
Basalt (Igneous Volcanic Rock)
Granodiorite
Granodiorite (containing Plagioclase, Quartz, and Biotite)
Basalt (Water-worn pebble)
Mafic Igneous Rock (primarily Plagioclase feldspar and Pyroxene)
Basalt (Vesicular)
Extrusive Mafic Igneous Rock
Basalt with Quartz Veins
Basalt (composition: SiO2, MgO, FeO, Al2O3, CaO)
Vesicular Basalt
Amygdaloidal Basalt (Mafic extrusive volcanic rock)
Basalt River Stone (Tumbled)
Basalt (Mafic Extrusive Igneous Rock)
Basalt
Basalt (composition of Plagioclase feldspar, Pyroxene, and Olivine)
Basalt Pebble
Extrusive mafic igneous rock
Porphyritic Basalt
Porphyritic Basalt (with Plagioclase phenocrysts)
Basalt with Limonite stains
Extrusive mafic igneous rock; Limonite (FeO(OH)·nH2O)
Iron-Nickel Meteorite
Siderite (Iron Meteorite), primarily Fe-Ni alloy
Basalt Pebble
Extrusive mafic igneous rock; primarily (Ca, Na)(Mg, Fe, Al)Si2O6 and (Ca, Na)AlSi3O8
Basalt
Basalt (Aphanitic Mafic Igneous Rock)
Basalt
Basalt (Mafic Extrusive)
Basalt
Vesicular Basalt
Basalt with Iron Oxidation
Extrusive Mafic Igneous Rock (composed of Plagioclase and Pyroxene)
Basalt
Basalt (Mafic Aphanitic Igneous Rock)
Dacite
Dacite (Intermediate volcanic rock)
Basalt
Extrusive mafic igneous rock; primarily (Ca,Na)(Mg,Fe,Al,Si)2O6 with (Ca,Na)(Al,Si)4O8
Basalt
Basalt (Mafic Extrusive Igneous Rock)
Basalt
Basalt (composition predominately Plagioclase feldspar and Pyroxene)
Basalt
Basalt (Aphanitic Mafic Igneous Rock)
Basalt (River Pebble)
Basalt (Aphanitic Mafic Volcanic Rock)
Basalt
Extrusive mafic igneous rock
Basalt (River Pebble)
Mafic volcanic rock (primarily Plagioclase feldspar and Pyroxene)
Basalt (River Stone)
Basalt (Aphanitic Mafic Igneous Rock)
Pumice
Pumice (Vesicular volcanic glass)
Granite
Phaneritic plutonic felsic rock (primarily Quartz, Feldspar, and Mica)
Yooperlite (Sodalite-bearing Syenite)
Fluorescent Sodalite-bearing Syenite
Pegmatite (Granitic) with Tourmaline
Granitic Pegmatite (containing Schorl and Quartz)
Pink Granite
Granite (Alkali-feldspar granite)
Amygdaloidal Basalt
Basalt with Secondary Mineral Infillings
Vesicular Basalt (Lava Rock)
Basalt with vesicular texture
Red Jasper (Amygdaloidal Basalt with Agate)
Silicon dioxide (SiO2) in Basalt host