Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Category
Sedimentary (Processed Mineral Product)
Browse sedimentary (processed mineral product) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Processed Mineral Product) in the encyclopedia
View all →
Sandstone (likely Arkose or Quartz Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Pyrite in Matrix
Iron Disulfide (FeS2)
mineral
Red Jasper
Silicon Dioxide with Hematite impurities (SiO2 + Fe2O3)
mineral
Sandstone
Arenite
sedimentary
Concretionary Sandstone
Clastic Sedimentary Rock (Sandstone with secondary mineral cementation)
sedimentary
Limestone Breccia
Sedimentary Breccia (Calcareous)
sedimentary
Quartz (variety of colors)
SiO2 (Silicon Dioxide)
Mineral
Precious Opal
Hydrated Silica (SiO2·nH2O)
mineral
Sandstone (Weathered Cobble)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Magnetite or Magnetic Iron Ore
Magnetite (Fe3O4)
mineral
Gastropod Steinkern (Internal Mold Fossil)
Gastropoda (Class); Internal mold or 'Steinkern' composed of Calcium Carbonate (CaCO3) or Sedimentary matrix
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Chalcedony (Common Opal or Agate)
Silicon Dioxide (SiO2)
mineral
Sandstone (Quartzose)
Arenite (composed primarily of SiO2)
sedimentary
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Coarse Sandstone Pebble
Clastic Sedimentary Rock (Sandstone)
sedimentary
Lapis Lazuli
Lapis Lazuli (Complex aggregate of Lazurite (Na,Ca)8(AlSiO4)6(SO4,S,Cl,OH)2, Pyrite, and Calcite)
metamorphic
Blue Apatite
Apatite group (Ca5(PO4)3(F,Cl,OH))
mineral
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Rutilated Quartz
Quartz (SiO2) with Rutile Inclusions (TiO2)
Mineral
Limestone with Calcite Crust
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Sandstone with Iron Oxide Staining
Arenite with Limonite/Hematite alteration
sedimentary
Schist
Schist (various mineral compositions)
Metamorphic
Turquoise (set in silver jewelry)
Turquoise - CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminum phosphate)
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Turquoise
Turquoise (Hydrated phosphate of copper and aluminium) CuAl6(PO4)4(OH)8·4H2O
mineral
Sandstone
Arenicola (comprising mostly Quartz, SiO2)
sedimentary
Larimar
Pectolite (Sodium Calcium Silicate Hydroxide) - (NaCa2(Si3O8)(OH))
Mineral
Quartz Vein in Host Rock (Pebble)
Quartz (SiO2) with sandstone or siltstone matrix
metamorphic/igneous transition
Gneiss
Gneiss (high-grade metamorphic rock)
metamorphic
Sandstone (likely Arkose or Quartz Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Limonite (Iron Ore)
Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)
sedimentary
Obsidian Arrowhead
Obsidian (Volcanic Glass)
igneous
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone (Calcareous or Ferruginous)
Clastic sedimentary rock (SiO2 with CaCO3 or Fe2O3 cement)
sedimentary
Sandstone
Arenite (SiO2 principal)
sedimentary
Picture Jasper
Silicon Dioxide (SiO2) with iron oxide and silicate minerals
sedimentary
Garnet (specifically Almandine)
Almandine - Fe3Al2(SiO4)3
metamorphic
Beach Quartz Pebble
Quartz (Silica - SiO2)
mineral