Granite or Granitic Gneiss River Rock
Granite / Gneiss
Igneous or Metamorphic
Category
Industrial Byproduct (Anthropogenic Rock)
Browse industrial byproduct (anthropogenic rock) specimens identified by the Rock Identifier community.
Limestone
Calcite (CaCO3)
sedimentary
Rough Emerald in Matrix
Beryl (Be3Al2Si6O18) with trace Chromium/Vanadium
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Limestone (Fossiliferous)
Calcium Carbonate (CaCO3) - Bioclastic Limestone
sedimentary
Granite
Granite (Felsic Plutonic Rock)
igneous
Basalt
Aphanitic Mafic Igneous Rock
igneous
Basalt with Iron Oxidation
Extrusive mafic volcanic rock
igneous
Basalt (Weathered River Stone)
Extrusive Mafic Igneous Rock
igneous
Basalt (Beach Pebble)
Basalt (extrusive volcanic rock)
igneous
Granodiorite
Granodiorite (Intermediate plutonic rock)
igneous
Basalt
Basalt (Mafic volcanic rock)
igneous
Basalt (River Pebble)
Extrusive mafic igneous rock
igneous
Basalt
Basalt (Mafic volcanic rock)
igneous
Basalt (River Stone)
Extrusive mafic igneous rock
igneous
Basalt
Basalt (Mafic volcanic rock)
igneous
Basalt Pebble
Basalt (Mafic Volcanic Rock)
igneous
Basalt Pebble
Extrusive mafic igneous rock
igneous
Basalt with Weathering Crust
Extrusive mafic volcanic rock
igneous
Basalt (Vesicular)
Extrusive mafic igneous rock
igneous
Basalt (River Pebble)
Extrusive Mafic Igneous Rock
igneous
Diorite
Diorite (an intrusive igneous rock)
igneous
Basalt Pebble
Extrusive Mafic Igneous Rock
igneous
Basalt with Iron Oxides
Mafic Igneous Rock (Mafite)
igneous
Basalt Pebble with Quartz Veining
Basalt (extrusive volcanic rock)
igneous
Basalt (River Pebble)
Extrusive mafic igneous rock
igneous
Basalt Pebble
Extrusive Mafic Volcanic Rock
igneous
Basalt River Stone
Basalt (Mafic volcanic rock)
igneous
Basalt Pebble
Basalt (Mafic volcanic rock)
igneous
Basalt
Extrusive mafic igneous rock
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Basalt
Extrusive mafic igneous rock
igneous
Basalt Pebble
Extrusive Mafic Igneous Rock
igneous
Basalt
Extrusive mafic igneous rock
igneous
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone (Calcareous Sandstone)
Calcareous Sandstone (primarily SiO2 with CaCO3 cement)
sedimentary
Lava Rock (Scoria)
Scoria (Basaltic Scoria)
igneous
Quartzite River Rock
Quartzite (SiO2)
metamorphic
Porphyritic Rhyolite
Rhyolite (Porphyritic texture)
igneous
Granite (with alteration)
Granite (Felsic intrusive igneous rock)
igneous
Barite Rose on Marcasite
Barium Sulfate (BaSO4) on Iron Sulfide (FeS2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral