Sandstone (Banded)
Clastic Sedimentary Rock (primarily SiO2)
Category
Browse man made rock (technosol) specimens identified by the Rock Identifier community.
Sandstone (Banded)
Clastic Sedimentary Rock (primarily SiO2)
Sandstone (Quartzite-rich)
Clastic sedimentary rock (SiO2 primary)
Pumice
Pumice (a highly vesicular volcanic rock)
Gossan (Iron Hat) with Quartz and Chlorite
Limonite/Goethite-rich Gossan (FeO(OH)·nH2O) with inclusions of Quartz and Chlorite
Decomposed Granite
Grano-diorite/Granite-residuum (SiO2 primary)
Quartz (Druzy or Geode fragment)
Silicon Dioxide (SiO2)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Chalcedony Nodule (Agate/Chert)
Chalcedony (cryptocrystalline Silicon Dioxide, SiO2)
Green Opal
Hydrated Silica (SiO2·nH2O)
Pumice
Pumice (Vesicular Rhyolite/Andesite)
Agate (specifically Carnelian Agate or Lake Superior style Agate)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Muscovite Mica (Golden/Yellow variety)
KAl2(AlSi3O10)(F,OH)2
Sandstone
Arenite (primarily SiO2)
Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
Basalt
Basalt (comprising plagioclase, pyroxene, and olivine)
Diorite (Salt and Pepper Rock)
Diorite
Clear Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
Garnet
Almandine (Fe3Al2(SiO4)3)
Limestone
Sedimentary Calcium Carbonate (CaCO3)
Basalt
Mafic volcanic rock (various silicate minerals including Pyroxene and Plagioclase)
Dendritic Agate or Spotted Quartzite
Silicon Dioxide (SiO2) with inclusions
Chert Pebble with Quartz Veins
Microcrystalline Quartz (SiO2)
Blue Lace Agate (Heat-treated/Crackle Quartz variety)
Silicon Dioxide (SiO2)
Yellow Quartzite Pebble
Quartzite (primarily SiO2)
Blue Lace Agate
Agate (Variety of Chalcedony, SiO2)
Abbey Bominable (Monster High character)
Anthropomorphic Yeti / Digital Animation
Leopard Skin Jasper
Silicon Dioxide (SiO2) with impurities
Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
Common Opal with Host Rock
Opal (Hydrated silica, SiO2·nH2O)
Sandstone (with banding)
Arenite (primarily SiO2)
Sandstone with Iron Oxide (Limonite/Hematite)
Ferruginous Sandstone (SiO2 with FeO(OH)·nH2O)
Pink Dyed Agate
Silicon Dioxide (SiO2) - Variety Agate
Graywacke
Graywacke
Quartzite
Quartzite (primarily SiO2)
Turquoise
Turquoise (CuAl6(PO4)4(OH)8·4H2O)
Basalt with Vesicle/Vug
Basalt (Aphanitic Mafic Igneous Rock)
Granite
Granite (Mainly Quartz, Alkali Feldspar, and Plagioclase)
Chert (Flint Nodules)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint Nodules)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Scoria (Lava Rock)
Vesicular Basalt / Scoria
Scoria (Lava Rock)
Mafic extrusive volcanic rock (Scientific formula varies based on mineral content: primarily SiO2, MgO, and FeO)
Schist
Mica Schist