Yellow Calcite
Calcium Carbonate (CaCO3)
Category
Browse sedimentary (imitation) specimens identified by the Rock Identifier community.
Yellow Calcite
Calcium Carbonate (CaCO3)
Carnelian Agate
Silicon Dioxide (SiO2)
Jasper
Silicon dioxide (SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Chert (Pink Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
Mica Schist
Crystalline Schist (often containing Muscovite, Biotite, and Quartz)
Sand Grain (Silica/Quartz Grain)
Silicon Dioxide (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with iron inclusions
Pyrite in Matrix
Iron Sulfide (FeS2)
Carnelian Agate
Chalcedony (SiO2 with Iron Oxide impurities)
Honey Calcite
Calcium Carbonate (CaCO3)
Schist
Mica Schist (primarily Muscovite or Biotite sheet silicates)
Chalcedony (Botryoidal)
Silicon Dioxide (SiO2)
Brown Agate
Silicon Dioxide (SiO2)
Chalcedony (Botryoidal)
Silicon Dioxide (SiO2)
Turquoise
Turquoise (Hydrated phosphate of copper and aluminium) CuAl6(PO4)4(OH)8·4H2O
Pyrite
Iron Sulfide (FeS2)
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Banded Agate
Agate (Silicon Dioxide, SiO2)
Raw Green Jasper
Silicon Dioxide (SiO2) with iron silicate inclusions
Limonite (with Pyrite)
Limonite (Hydrated Iron Oxide) - FeO(OH)·nH2O
Sandstone
Sandstone (composed primarily of sand-sized minerals or rock grains)
Pebble
Clast (specifically a granule or small pebble)
Chert (and Chert Flake)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Chert (Common Opal/Jasper variety)
Cryptocrystalline Quartz (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
Yellow Jasper
Chalcedony (SiO2) with Goethite/Iron oxide inclusions
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Red Jasper (Skull Carving)
Jasper (Silicon Dioxide, SiO2 plus Iron Oxide inclusions)
Chert (Common Opal variant)
Microcrystalline Quartz (SiO2)
Green Jasper
Silicon Dioxide (SiO2) with iron silicate inclusions
Jasper
Silicon dioxide (SiO2) with iron oxide inclusions
Green Jasper (Banded Jasper)
Silicon Dioxide (SiO2) with impurities
Chert (Nodular)
Chert (Microcrystalline Quartz, SiO2)
Green Onyx (Banded Calcite)
Travertine (CaCO3 - Calcium Carbonate)
Chert and Chalcedony
Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Chert (Silicon Dioxide, SiO2)
Chert (specifically Flint or Common Chert)
Chert (Cryptocrystalline Silica, SiO2)
Chert (specifically Red Chert/Jasper nodule)
Microcrystalline Quartz (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Iron inclusions
Chert Geode with Quartz Druzy
Microcrystalline Quartz (SiO2) with macrocrystalline Quartz