Banded Gneiss
Gneiss (Foliated Metamorphic Rock)
Category
Browse mineral on sedimentary rock specimens identified by the Rock Identifier community.
Banded Gneiss
Gneiss (Foliated Metamorphic Rock)
Quartz Geode Fragment
Silicon Dioxide (SiO2)
Geode
Silicon dioxide (Quartz/Chalcedony) concretion
Sandstone
Arenite
Sandstone Pebble
Arenite (Siliclastic sedimentary rock)
Sandstone (Ferruginous)
Arenite with Iron Oxide matrix
Orange Calcite
Calcium Carbonate (CaCO3)
Sandstone
Arenite
Granite
Phaneritic Igneous Rock (Granite)
Conglomerate
Conglomerate (Clastic Sedimentary Rock)
Sandstone
Arenite (SiO2 based)
Quartz-lined Geode / Chalcedony Nodule
Silicon Dioxide (SiO2)
Quartz fragment (Pebble)
Silicon Dioxide (SiO2)
Rounded river pebble
Indeterminate lithic clast; likely weathered sandstone or quartz-rich sedimentary rock
Limonite Geode (Ironstone Concretion)
FeO(OH)·nH2O (Hydrated Iron Oxide)
Sandstone Pebble
Sandstone (Quartzose/Feldspathic Sandstone)
Quartz Geode (with possible Manganese or Goethite coating)
Silicon Dioxide (SiO2)
Sandstone / Chert Gravel
SiO2 (Silicon Dioxide based clastic sedimentary rock)
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (SiO2 dominated)
Sandstone
Arenite (primarily SiO2)
Sandstone with Mineral Veining or Crust
Sedimentary Sandstone (mostly SiO2 with Fe2O3 tinting)
Red Jasper (or Agate/Jasper mixture)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Conglomerate
Conglomerate (Sedimentary rock)
Sandstone (Iron-stained)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)
Sandstone (Quartzose)
Arenite (composed primarily of SiO2)
Sandstone (likely Quartzose Sandstone)
Arenite (SiO2 based)
Sandstone (likely Quartz Sandstone)
Arenite (composed primarily of SiO2)
Quartz Geode
Silicon Dioxide (SiO2)
Sandstone
Sedimentary Rock (Quartz Sandstone)
Sandstone (Ferruginous)
Arenite (SiO2 based with Fe2O3 banding)
Sandstone
Arenite
Sandstone
Arenite
Conglomerate
Conglomerate (clastic sedimentary rock)
Agate Geode
Silicon Dioxide (Chalcedony/Quartz), SiO2
Sedimentary rock with quartz veining
Laminated siltstone or mudstone with hydrothermal quartz veins
Sandstone
Arenite (SiO2 based)
Quartz (Moss-covered)
Silicon Dioxide (SiO2)
Sandstone Pebble with Mineral Encrustation
Quartz Sandstone with Calcite/Halite Crust
Sandstone
Arenite
Limonite/Goethite Iron Concretion
Hydrated iron oxide-hydroxide mixture (FeO(OH)·nH2O)
Sandstone (Quartzite texture)
Clastic sedimentary rock (primarily SiO2)
Quartz
Silicon Dioxide (SiO2)