Basalt (River Pebble)
Basalt
Category
Browse not a rock specimens identified by the Rock Identifier community.
Basalt (River Pebble)
Basalt
Basalt with Vesicles
Vesicular Basalt
Serpentinite (often containing Jadeite/Nephrite)
Antigorite-rich Serpentine Rock, (Mg, Fe)3Si2O5(OH)4
Basalt
Basalt (composition of plagioclase, pyroxene, and olivine)
Basalt with Plagioclase Phenocrysts
Porphyritic Basalt
Unakite (Epidotized Granite)
Unakite (Rock composed of Epidote Ca2(Al,Fe)3(SiO4)3(OH), Orthoclase KAlSi3O8, and Quartz SiO2)
Serpentinite
Serpentinite ((Mg,Fe,Ni,Al)3Si2O5(OH)4)
Basalt River Pebble
Basalt
Clear Quartz
Silicon Dioxide (SiO2)
Unakite
Epidotized Granite
Schist
Mica Schist
Gold-bearing Quartz with Iron Oxides
Quartz (SiO2) with Limonite/Goethite (FeO(OH)) and Pyrite (FeS2)
Unakite
Epidotized Granite
Quartzite (Ferruginous)
Quartzite (major component SiO2 with Fe2O3 impurities)
Quartzite with Quartz Veins
Quartzite (chiefly SiO2)
Granite
Granite (Mainly Quartz, Feldspar, and Mica/Amphibole)
Vesicular Basalt
Basalt with secondary mineral infilling (Amygdaloidal Basalt)
Basalt
Basalt
Serpentine
Serpentinite (group of minerals including Antigorite, Lizardite, or Chrysotile) (Mg, Fe)3Si2O5(OH)4
Basalt with Vesicular Texture
Basalt (SiO2 range 45-52%)
Basalt with Calcite Veining
Aphanitic Mafic Igneous Rock (Basalt) with CaCO3
Unakite
Unakite epidotized granite
Peridotite (Olivine/Peridot)
Peridotite: (Mg,Fe)2SiO4 (Olivine-rich ultramafic rock)
Porphyritic Rhyolite (Birdseye Rhyolite)
Rhyolite (Porphyritic texture)
Basalt Pebble
Basalt
Unakite
Unakite (altered granite)
Granite Pebble
Granite (Phaneritic Quartz-Feldspar intrusive rock)
Banded Gneiss
Gneiss
Basalt
Basalt
Gneiss
Gneiss
Basalt River Pebble
Mafic Igneous Rock (Fine-grained Basalt)
Coarse-grained Granite
Phaneritic Granite (contains Quartz, Feldspar, and Mica)
Vesicular Basalt with Xenocrysts
Mafic Igneous Plutonic/Extrusive Complex
Basalt with Iron Oxidation
Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
Unakite
Epidotized Granite
Serpentinite
Serpentinite (composed primarily of minerals in the Serpentine group: Chrysotile, Lizardite, and Antigorite)
Basalt with Iron Oxidation
Vesicular Basalt (Aphanitic Mafic Igneous Rock)
Basalt with Quartz Veins
Basalt (SiO2 range 45-52%)
Basalt
Basalt
Basalt
Basalt (composition: Plagioclase, Pyroxene, and Olivine)
Unakite
Epidotized Granite
Sandstone (Banded)
Clastic Sedimentary Rock: Arenite