Glauconite
Glauconite (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2
Category
Browse sedimentary (artificial) specimens identified by the Rock Identifier community.
Glauconite
Glauconite (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2
Granular Sandstone
Arenite (variable composition, primarily SiO2)
Sandstone (Ferruginous)
Arenite (complex silicate composition with iron oxides)
Sandstone (Ferruginous)
Arenite (SiO2 with iron oxide impurities)
Sandstone (Ferruginous)
Ferruginous Sandstone (SiO2 with Fe2O3)
Sandstone
Arenite (SiO2 based)
Sandstone
Arenite (SiO2 primarily)
Sandstone
Arenite
Sandstone
Arenite (primarily SiO2)
Banded Chert
Silicon dioxide (SiO2)
Sandstone (Greywacke/Siltstone variant)
Arenite / Wacke (SiO2 with diverse mineral inclusions)
Sandstone (Red/Brown Variety)
Arenite (SiO2 with iron oxide impurities)
Sandstone
Arenite (primarily SiO2)
Limestone (Micritic)
Sedimentary rock mainly composed of Calcium Carbonate (CaCO3)
Limestone
Carbonate rock (CaCO3)
Sandstone
Arenite (SiO2 based)
Red Sandstone
Arenite (primarily Quartz with Iron Oxide)
Sandstone
Arenite (primarily SiO2)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Sandstone (likely with Quartz Veining)
Arenite (primarily SiO2)
Sandstone
Arenite (primarily SiO2)
Limestone (River Pebble)
Calcium Carbonate (CaCO3)
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
Sandstone
Arenite (SiO2 based)
Sandstone
Arenite (primarily SiO2)
Sandstone (Pebble/Cobble)
Arenite (primarily SiO2)
Limestone
Calcium Carbonate (CaCO3)
Sandstone
Arenite
Sandstone
Sandstone (composed mainly of SiO2)
Sandstone
Arenite
Sandstone
Arenite (SiO2 based clastic rock)
Chert (Jasper / Flint variant)
Microcrystalline Quartz (SiO2)
Coal
Bituminous or Anthracite coal (carbon-rich sedimentary rock)
Limestone
Calcium Carbonate (CaCO3)
Fossil Crab
Decapoda (likely Avitelmessus or Raninidae family)
Calcite
Calcium Carbonate (CaCO3)
Hematite
Hematite, Iron(III) oxide (Fe2O3)
Milky Quartz in Shale
Silicon Dioxide (SiO2) in sedimentary host rock
Bivalve Fossil (Mussel or Clam Shell)
Bivalvia
Cockle Shell Fossil
Cardium (Bivalvia)
Limestone
Calcareous sedimentary rock (CaCO3)