Reddish Brown Claystone or Siltstone
Argillite / Siltstone / Claystone
Category
Browse sedimentary (artificial) specimens identified by the Rock Identifier community.
Reddish Brown Claystone or Siltstone
Argillite / Siltstone / Claystone
Sandstone (Pebble)
Arenite (SiO2 based)
Quartz Pebble
Silicon Dioxide (SiO2)
Jasper
Microcrystalline Quartz (SiO2)
Sandstone
Arenite (SiO2 based)
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Chert (Yellow Jasper)
Silicon dioxide (SiO2) with iron oxide inclusions
Jasper
Silicon dioxide (SiO2)
Quartz (Chert/Chalcedony variant)
Silicon dioxide (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with goethite or iron oxide inclusions
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Sandstone
Quartz Arenite / Clastic Sedimentary Rock
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (primarily SiO2)
Pyrite Nodule
Iron Sulfide (FeS2)
Pyrite Nodule
Iron Sulfide (FeS2)
Hematitic Sandstone
Sandstone with Hematite inclusions (SiO2 + Fe2O3)
Limestone with Fossil Fragments
Bioclastic Limestone (CaCO3)
Sandstone (likely Siltstone)
Arenite or Siltstone (high SiO2 content)
Brown Chalcedony
Silicon Dioxide (SiO2)
Sandstone
Arenite (Sandstone)
Blue Chalcedony (Tumbled)
Silicon Dioxide (SiO2)
Green Calcite or Prasiolite (Green Quartz)
Calcium carbonate (CaCO3) or Silicon dioxide (SiO2)
Copper Ore (Malachite and Limonite bearing)
Cuprite, Malachite, and Limonite mixture
Agate
Silicon dioxide (Chalcedony), SiO2
Tumbled Agate
Silicon Dioxide (Chalcedony / Quartz)
Rhodochrosite
Rhodochrosite (MnCO3)
Quartz with Inclusions
Silicon Dioxide (SiO2)
Chalcopyrite
Copper Iron Sulfide (CuFeS2)
Galena
Lead Sulfide (PbS)
Tumbled Agate
Silicon dioxide (SiO2)
Clear Quartz (Faceted Crystal)
Silicon Dioxide (SiO2)
Black Onyx
Silicon Dioxide (SiO2) - Chalcedony
Chert / Flint
Microcrystalline Quartz (SiO2)
Blue Apatite
Ca5(PO4)3(F,Cl,OH)
Yellow Jade (or Carnelian / Chalcedony)
SiO2 (Silicon Dioxide)
Pyrite (or Arsenopyrite / Ore mineral aggregate)
FeS2 (Iron Sulfide)
Orange Calcite
Calcite (Calcium Carbonate, CaCO3)
Barite
Barium sulfate (BaSO4)
Pyrite or Chalcopyrite
Iron sulfide (FeS2) or Copper iron sulfide (CuFeS2)
Quartz (Chalcedony/Agate)
Silicon Dioxide (SiO2)
Magnesite or Howlite (dyed or naturally patterned)
Magnesium carbonate (MgCO3) or Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
Sandstone
Arenite (composed primarily of SiO2)