Hematitic Sandstone
Sandstone with Iron Oxide (Hematite) staining
Category
Browse sedimentary (chemical) specimens identified by the Rock Identifier community.
Hematitic Sandstone
Sandstone with Iron Oxide (Hematite) staining
Chert (often called Flint)
Chert (SiO2)
Quartz (Milky/Crystalline variety)
Silicon Dioxide (SiO2)
Honey Calcite
Calcium Carbonate (CaCO3)
Limonite (Iron Ore)
Hydrated ferric oxide (FeO(OH)·nH2O)
Chert (Red Jasper variant)
Silica (SiO2)
Chert (Cherty Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Honey Calcite
Calcium Carbonate (CaCO3)
Chert (Jasper)
Sedimentary Cryptocrystalline Quartz (SiO2)
Limestone
Calcareous sedimentary rock (CaCO3)
Jasper-Quartz Conglomerate / Chert
Siliceous Sedimentary Rock (SiO2)
Chert (variably Oolitic or Fossiliferous)
Sedimentary Cryptocrystalline Quartz (SiO2)
Limestone Pebble
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (Jasper/Common Opal mix)
Microcrystalline Quartz (SiO2)
Chert / Flint
Chert (Cryptocrystalline Silica, SiO2)
Chert (often called Flint in dark varieties)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Blue Calcite
Calcium Carbonate (CaCO3)
Orange Calcite
Calcium Carbonate (CaCO3)
Pyrite
Iron Sulfide (FeS2)
Celestite (Celestine)
Strontium Sulfate (SrSO4)
Optical Calcite (Iceland Spar)
Calcium Carbonate (CaCO3)
Blue Calcite
Calcite (CaCO3)
Dyed Quartz Geode
Silicon Dioxide (SiO2) with artificial pigment
Limestone
Calcium Carbonate (CaCO3)
Chert
Silicon dioxide (SiO2)
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
Chert (specifically Iron-stained or Jasperoid Chert)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert Nodules
Chert (Silicon Dioxide, SiO2)
Chert (specifically Tan Chert or Flint)
Silicon Dioxide (SiO2)
Quartzite Pebble
Quartzite (SiO2 based)
Chert (Flint variety)
Silicon Dioxide (SiO2)
Sandstone with Ironstone Banding
Clastic Sandstone (composed of Quartz with Hematite/Limonite bonding)
Aragonite Star Cluster
Aragonite (Calcium Carbonate, CaCO3)