Jasper with Hematite (Red Jasper)
Silicon Dioxide with Iron Oxide (SiO2 and Fe2O3)
Category
Browse sedimentary (physico chemical precipitate) specimens identified by the Rock Identifier community.
Jasper with Hematite (Red Jasper)
Silicon Dioxide with Iron Oxide (SiO2 and Fe2O3)
Limonite/Goethite Concretion
Goethite (FeO(OH))
Possible calcite crystal fragment
Calcite (CaCO₃), tentative identification
Psilomelane (Black Hematite varietal)
Barium Manganese Oxide (Ba,H2O)2Mn5O10
Chert
Silicon dioxide (SiO2)
Chert or Flint
Silicon dioxide (SiO2)
Hematite
Hematite, Iron(III) oxide (Fe2O3)
Chert
Chert (SiO2)
Jasper
Silicon Dioxide (SiO2)
Sandstone (Ferruginous)
Arenite (SiO2 based with Fe2O3 banding)
Chert / Jasper
Silicon Dioxide (SiO2)
Yellow Ochre / Limonite
Hydrated ferric oxide (FeO(OH)·nH2O)
Chert (Jasper/Chalcedony)
Microcrystalline Quartz (SiO2)
Honey Calcite
Calcium Carbonate (CaCO3)
Yellow Calcite
Calcium Carbonate (CaCO3)
Limonite/Ironstone
Limonite (FeO(OH)·nH2O)
Chert Nodule
Chert / Microcrystalline Quartz (SiO2)
Chert (Iron-stained)
Silicon Dioxide (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Limonite (Iron Ore)
Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)
Onyx Marble (Banded Calcite)
Calcite (Calcium Carbonate, CaCO3)
Chert
Microcrystalline Quartz (SiO2)
Chalcedony with Druzy Quartz
Silicon Dioxide (SiO2)
Chalcedony / Agate
Silicon Dioxide (SiO2)
Orange Calcite
Calcite (Calcium Carbonate, CaCO3)
Manganese Ore (Psilomelane/Pyrolusite)
Psilomelane ((Ba,H2O)2Mn5O10) and Pyrolusite (MnO2)
Chalcedony (Agate/Chert)
Silicon Dioxide (SiO2)
Chalcedony (Agate/Chert variety)
Silicon Dioxide (SiO2)
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Chert Pebble
Microcrystalline Quartz (SiO2)
Limonite pseudo-concretion (Ironstone)
Limonite (FeO(OH)·nH2O) / Goethite
Calcite
Calcium Carbonate (CaCO3)
Banded Calcite (Mexican Onyx)
Calcium Carbonate (CaCO3)
Limonite Concretion
Hydrated Iron Oxide-Hydroxide, FeO(OH)·nH2O
Hematite
Iron(III) oxide (Fe2O3)
Chert
Microcrystalline Quartz (SiO2)
Chert (Chalcedony)
Silicon Dioxide (SiO2)
Chert (Arrowhead artifact)
Chert (Cryptocrystalline Silica, SiO2)
Jasper
Microcrystalline Quartz (SiO2)
Chert (Green Chert or Jasper)
Silicon Dioxide (SiO2)
Chert (Flint)
Chert (SiO2)
Chert
Microcrystalline Quartz (SiO2)