Limonite and Goethite (Ironstone)
Hydrous Iron Oxide Mixture (FeO(OH)·nH2O)
Category
Browse sedimentary (chemical) specimens identified by the Rock Identifier community.
Limonite and Goethite (Ironstone)
Hydrous Iron Oxide Mixture (FeO(OH)·nH2O)
Banded Chert (River Pebble)
Microcrystalline Quartz (SiO2)
Banded Chert / Flint
Microcrystalline Quartz (SiO2)
Chert (with Calcite Veining)
Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3) veins
Chert (River Pebble)
Microcrystalline Quartz (SiO2)
Banded Chert (Flint/Jasper variety)
Microcrystalline Quartz (SiO2)
Desert Varnish (on Sandstone)
Rock Varnish (composed of Manganese oxides, Iron oxides, and Clay minerals)
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Chert / Flint
Silicon Dioxide (SiO2)
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
Quartz Pebble (Iron-stained)
Silicon Dioxide (SiO2)
Quartzite
Quartzite (consisting primarily of SiO2)
Chert (specifically Yellow Jasper)
Sedimentary Cryptocrystalline Quartz (SiO2)
Fossiliferous Limestone
Fossiliferous Calclutite / Bio-calcarenite (CaCO3)
Green Banded Chert (Agate/Jasper)
Silicon Dioxide (SiO2) with trace impurities of Chlorite or Glauconite
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Quartz (Milky/Crystal variety)
Silicon Dioxide (SiO2)
Chert (Nodule)
Silicon Dioxide (SiO2)
Banded Chert (with Quartz Vein)
Microcrystalline Silica (SiO2)
Chert (specifically Iron-stained River Cobble)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Banded Chert in Matrix
Microcrystalline Quartz (SiO2)
Satin Spar Selenite
Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)
Chert (Grey-Green Flint)
Microcrystalline silicon dioxide (SiO2)
Graphite
Graphite (Native Carbon, C)
Limonite-stained Chert
Microcrystalline Quartz (SiO2) with Hydrated Iron Oxides (FeO(OH)·nH2O)
Chert (White/Light Tan)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Limestone
Sedimentary Calcium Carbonate (CaCO3)
Chert Pebble (Yellow/Brown Jasper variety)
Microcrystalline Quartz (SiO2)
Chert (Nodule)
Silicon Dioxide (SiO2)
Chert (Gravel pebble)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (variant Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Iron-stained)
Chert (SiO2 - Silicon Dioxide)
Milky Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
Agate
Silicon Dioxide (SiO2) - Cryptocrystalline Chalcedony
River Pebble (Quartz/Jasper)
Silicon Dioxide (SiO2)
Native Copper
Native Copper (Cu)
Red Jasper
Silicon Dioxide (SiO2) with Iron inclusions
Orange Calcite (Polished Sphere)
Calcium Carbonate (CaCO3)
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
Limestone
Calcium Carbonate (CaCO3)