Pumice
Pumice (Vesicular Volcanic Glass)
Category
Browse not a rock (man made industrial metal) specimens identified by the Rock Identifier community.
Pumice
Pumice (Vesicular Volcanic Glass)
Asphalt (Bituminous Pavement Bit)
Bitumen-bound aggregate (Petrochemical-bound composite)
Peridotite (with Olivine)
Peridotite (rich in Olivine, (Mg,Fe)2SiO4)
Andesite
Andesite
Basalt
Basalt (Mafic volcanic rock)
Quartzite with Quartz Vein
Metamorphosed sandstone (SiO2)
Basalt with Magnetite inclusions
Basalt (Mafic silicate rock) potentially containing Magnetite (Fe3O4)
Graywacke
Graywacke
Schist
Chlorite/Mica Schist
Druzy Quartz (part of a Geode)
Silicon Dioxide (SiO2)
Smoky Quartz
Smoky Quartz (SiO2: Silicon Dioxide)
Quartz Vein in Host Rock (Breccia/Rhyolite)
Silicon Dioxide (SiO2) with matrix
Basalt
Basalt (Mafic volcanic rock)
Milky Quartz with inclusions
Quartz (Silicon Dioxide, SiO2)
Schist (Micaceous Schist)
Schist (containing mainly Muscovite and Quartz)
Quartzite
Quartzite (SiO2)
Sodalite
Sodalite - Na8(Al6Si6O24)Cl2
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
Quartzite Pebble
Quartzite (SiO2)
Quartz Geode (Cracked Open Fragment)
Silicon Dioxide (SiO2)
Blue Sapphire
Corundum (Al2O3) with traces of Iron and Titanium
Basalt
Basalt (Mafic volcanic rock, primarily Plagioclase and Pyroxene)
Granitic Pegmatite (River Rock specimen)
Granite / Pegmatite (composed of SiO2, KAlSi3O8, and NaAlSi3O8)
Jasper
Jasper / Silicon Dioxide (SiO₂)
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Quartzite River Rock
Quartzite (primarily SiO2)
Rough Star Sapphire (Corundum)
Al2O3 (Aluminum Oxide)
Granite
Granite (a broadly defined plutonic igneous rock, often more specifically classified as quartz monzonite or granodiorite based on precise mineral percentages)
Red Shale
Fissile Siliciclastic Sedimentary Rock
Andesite
Andesite (Intermediate Extrusive Volcanic Rock)
Granodiorite
Granodiorite (intermediate plutonic rock)
Smurf Rock (Fictional Interpretation)
Cyanus Anthropomorphicus (Geologic Simulation)
Basalt with Olivine Phenocrysts
Porphyritic Basalt (Mineral formula of Olivine: (Mg,Fe)2SiO4)
Ferruginous Quartz
Quartz with Iron Oxide inclusions (SiO2 + Fe2O3)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Basalt
Basalt (composition predominately plagioclase feldspar and pyroxene)
Blue Sapphire
Corundum (Al2O3)
Jasper and Agate
Microcrystalline Quartz (SiO2)
Fluorite (often referred to as Rainbow Fluorite)
Fluorite (Calcium Fluoride, CaF2)
Desert Rose
Gypsum (variety Selenite) or Barite, CaSO4·2H2O
Garnet-Mica Schist
Garnetiferous Porphyroblastic Schist
Red Sandstone
Arenite (Ferruginous Sandstone)