Agate
Agate (a variety of Chalcedony, SiO2)
Category
Browse sedimentary (primary) with artificial modification specimens identified by the Rock Identifier community.
Agate
Agate (a variety of Chalcedony, SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Microcrystalline Limestone Pebble
Carbonate sedimentary rock (Calcium Carbonate, CaCO3)
Honey Calcite
Calcite (Calcium Carbonate - CaCO3)
Quartz (Microcrystalline/Chert)
Silicon Dioxide (SiO2)
Limonite (Ironstone Concretion)
Limonite (FeO(OH)·nH2O)
Magnetite
Iron(II,III) oxide (Fe3O4)
Bauxite
AlOx(OH)3-2x (mixture of Gibbsite, Boehmite, and Diaspore)
Limonite (Iron Stone/Goethite)
Limonite (mixture of hydrated iron oxides, primarily Goethite: α-FeO(OH))
Limestone (specifically Fossiliferous Limestone)
Calcium Carbonate (CaCO3)
Chert (River Pebble)
Microcrystalline Quartz (SiO2)
Chert / Flint
Silicon Dioxide (SiO2)
Chert (varietal Flint or Jasper)
Silicon Dioxide (SiO2)
Chert (Yellow Jasper)
Microcrystalline Quartz (SiO2)
Chert (specifically Flint or Jasper-Chert)
Silicon Dioxide (SiO2)
Limestone
Calcium Carbonate (CaCO3)
Chert (variations include Flint or Jasper)
Silicon Dioxide (SiO2)
Chert (specifically Flint or Common Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint Nodules)
Chert (Microcrystalline Quartz, SiO2)
Chert Concretion
Silicon dioxide (SiO2)
Chert (Field Stone)
Chert (Silicon Dioxide, SiO2)
Chert (Jasper-rich River Cobble)
Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
Banded Iron Formation (BIF)
Banded Iron Formation (Magnetite/Hematite and Chert)
Chert (Yellow Jasper/Flint)
Microcrystalline Quartz (SiO2)
Chert (Pink Chert / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Banded Variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (and/or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Limestone
CaCO3 (principally Calcite)
Limonite-stained Chert
Silicon Dioxide (SiO2) with Hydrated Iron Oxide (FeO(OH)·nH2O)
Chert (variations include Flint/Jasper)
Cryptocrystalline Quartz (SiO2)
Limestone
Calcium Carbonate (CaCO3)
Chert (Black Chert/Flint)
Silicon Dioxide (SiO2)
Limestone
Calcium Carbonate (CaCO3)
Chert (Nodule)
Silicon Dioxide (SiO2)
Chert (and Flint)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (often called Flint or Jasper when pigmented)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Green Chert (Jasper)
Silicon Dioxide (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)