Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
Category
Browse sedimentary (chemically precipitated mineral) specimens identified by the Rock Identifier community.
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
Honey Calcite
Calcium Carbonate (CaCO3)
Chalcedony (Agate / Quartz Geode Fragment)
Silicon Dioxide (SiO2)
Chert (Flint Nodules)
Sedimentary cryptocrystalline quartz (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Orange Calcite
Calcium Carbonate (CaCO3)
Limestone with Calcite Veining
Calcium Carbonate (CaCO3)
Pyrite with Limonite/Goethite Alteration (Pseudomorph)
Iron Sulfide (FeS2) transitioning to Hydrated Iron Oxides (FeO(OH)·nH2O)
Aragonite Star Cluster
Aragonite (Calcium Carbonate, CaCO3)
Chert (with Quartz vein/coating)
Microcrystalline Quartz (SiO2)
Optical Calcite
CaCO3 (Calcium Carbonate)
Pyrite
Iron Sulfide (FeS2)
Quartz
Silicon Dioxide (SiO2)
Quartz (Peach/Orange)
Silicon Dioxide (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Yellow Calcite
Calcium Carbonate (CaCO3)
Yellow Calcite
Calcium Carbonate (CaCO3)
Barite Rose on Marcasite
Barium Sulfate (BaSO4) on Iron Sulfide (FeS2)
Yellow Jasper / Chert
Silicon Dioxide (SiO2) with Goethite or Limonite inclusions
Sulfur
Sulfur (S8)
Quartz
Silicon Dioxide (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Ferruginous Sandstone (Gozzanous)
SiO2 (Quartz) with FeO(OH) (Goethite) or Fe2O3 (Hematite) coating
Ironstone Concretion (Limonite/Goethite)
Goethite-rich Concretion (FeO(OH))
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
Bumblebee Jasper (technically a type of Agate/Anhydrite)
Calcite and Anhydrite with inclusions of Realgar and Orpiment (As2S3)
Sandstone with Iron Staining
Clastic sedimentary rock (SiO2 with iron oxides)
Blue Calcite
Calcium Carbonate (CaCO3)
Calcite crystal fragment
Calcite (calcium carbonate, CaCO₃)
Barite (Desert Diamond)
Barite (Barium Sulfate, BaSO4)
Banded Iron Formation (BIF) / Chert
Banded Iron Formation (SiO2 with Fe2O3 / Fe3O4)
Banded Chert
Microcrystalline Quartz (SiO2)
Banded Chert
Microcrystalline Quartz (SiO2)
Honey Calcite
Calcite (Calcium Carbonate, CaCO3)
Chert (with Quartz)
Microcrystalline Quartz (SiO2)
Flint or Chert
Microcrystalline Quartz (SiO2)
Honey Calcite
Calcium Carbonate (CaCO3)
Chert (Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Red Jasper
Silicon Dioxide with Iron Oxide (SiO2)
Quartz (Milky/Clear)
Silicon Dioxide (SiO2)
Hematite
Iron(III) oxide (Fe2O3)
Hematite
Iron(III) oxide (Fe2O3)