Sandstone
Sandstone (SiO2-rich framework with variable matrix)
Category
Browse mineral on sedimentary rock specimens identified by the Rock Identifier community.
Sandstone
Sandstone (SiO2-rich framework with variable matrix)
Sandstone (with Calcite or Silica veins)
Clastic sedimentary rock (primarily SiO2)
Sandstone (Wonderstone)
Arenite (composed primarily of SiO2 with Fe2O3 impurities)
Grey River Stone (Gneiss/Schist mix)
Foliated Metamorphic Rock (variable mineral formula)
Concretion
Various mineral compositions, typically carbonate or iron oxide cemented sediment
Banded Gneiss
Gneiss (Felsic to Mafic Metamorphic Rock)
Sandstone
Arenite (SiO2 based)
Sandstone / Chert Pebble
Silicon Dioxide / Sedimentary Rock (SiO2)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite
Sandstone
Sedimentary Rock (Quartz arenite)
Sandstone
Arenite (Clastic Sedimentary Rock)
Hematite
Iron(III) oxide (Fe2O3)
Pebble (Likely Basalt or Siltstone)
Clastic sedimentary rock or mafic volcanic rock
Pyrite (on host rock)
Iron Sulfide (FeS2)
Sandstone pebble
Sandstone (siliciclastic sedimentary rock)
Sandstone
Arenite
Sandstone (likely Arkosic)
Arenite (SiO2 with KAlSi3O8)
Quartz Geode
Silicon Dioxide (SiO2)
Sandstone pebble
Sandstone (Quartz-rich Arenite)
Concretion in Shale
Siltstone/Shale with Siderite or Calcareous concretions
Sandstone with Iron Oxide Concretions
Quartzose Sandstone with Limonite/Hematite
Sandstone
Clastic sedimentary rock (primarily SiO2)
Agate
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Sandstone
Sandstone (Silicon dioxide, SiO2 based)
Sandstone
Arenite (typically SiO2 based)
Sandstone
Arenite (SiO2 principal)
Quartz
Silicon Dioxide (SiO2)
Quartz Geode
Silicon Dioxide (SiO2)
Sandstone (Glacial Cobble)
Arenite / Sedimentary Rock (primarily SiO2)
Quartz Druzy Geode
Silicon Dioxide (SiO2) - Crystalline Variety
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
Sandstone
Sandstone (clastic sedimentary rock)
Foliated metamorphic rock, likely gneiss or mica schist
Quartz–feldspar–mica metamorphic rock; exact identification is uncertain from the photograph
Agate
Silicon Dioxide (SiO2)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Quartz Crystal Fragment
Silicon Dioxide (SiO2)
Quartz Vein in Hematitic Siltstone
Hydrothermal Quartz (SiO2) in Ferriferous Matrix
Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (primarily SiO2)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Druzy Quartz Geode (with Chalcedony)
Silicon Dioxide (SiO2)
Sandstone (Ferruginous)
Arenite (with Iron Oxide)