Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron inclusions
Category
Browse mineral on sedimentary specimens identified by the Rock Identifier community.
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron inclusions
Geode (unopened)
Calcedony-lined Geode (SiO2)
Gneiss
Gneiss (High-grade metamorphic rock)
Green Kyanite
Kyanite (Al2SiO5)
Sandstone Concretion
Clastic Sedimentary Rock - Quartz Arenite / Sandstone
Banded Sandstone (Liesegang Rings)
Sedimentary Arenite (SiO2 with FeO/Fe2O3 impurities)
Chalk
Calcium Carbonate (CaCO3)
Gastropod Fossil (Snail Internal Mold)
Gastropoda; internal mold (steinkern), often composed of Calcium Carbonate (CaCO3) or Silica (SiO2)
Hematite
Ferric oxide (Fe2O3)
Petrified Wood
Silicified wood (Quartz, Chalcedony, or Opal)
Schist (specifically Mica Schist)
Mica Schist (primarily composed of Muscovite KAl2(AlSi3O10)(OH)2 and Biotite)
Sandstone
Arenite
Chert (Flint)
Silicon Dioxide (SiO2)
Chert (Flint variety)
Silicon Dioxide (SiO2)
Chert (Jasper)
Silicon Dioxide (SiO2)
Jasper
Jasper (Silicon Dioxide, SiO2)
Siltstone with iron staining
Siltstone (primarily SiO2 with FeO(OH) coatings)
Glauconitic Sandstone
Greensand (Glauconite-bearing sandstone)
River Rock (Greywacke/Sandstone)
Lithic Wacke
Amber
Succinite
Quartz Geode
Silicon Dioxide (SiO2)
Blue Calcite
Calcium Carbonate (CaCO3)
Calcite in Matrix
Calcium Carbonate (CaCO3)
Feldspar
Potassium Feldspar (KAlSi3O8)
Botryoidal Chalcedony (Agate/Chert Nodule)
Chalcedony (SiO2)
Turquoise
Hydrated phosphate of copper and aluminum; CuAl6(PO4)4(OH)8·4H2O
Kyanite
Kyanite (Al2SiO5)
Howlite
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
Clear Quartz
Silicon Dioxide (SiO2)
Blue Calcite
Calcium Carbonate (CaCO3)
Pyrite
Iron Sulfide (FeS2)
Hematite (Tumbled)
Iron(III) oxide (Fe2O3)
Quartz Geode
Silicon Dioxide (SiO2)
Hematite
Hematite (Fe2O3)
Sandstone with Calcite Vein
Clastic sedimentary rock (primarily SiO2) with Calcium Carbonate (CaCO3) infilling
Sandstone (likely Graywacke or Lithic Sandstone)
Arenite / Wacke (SiO2 based with lithic fragments)
Polychrome Jasper (Desert Jasper)
Silicon Dioxide (SiO2) with iron and mineral inclusions
Jasper with Quartz inclusions
Silicon Dioxide (SiO2) with varying mineral impurities
Greyling Sandstone / Greywacke
Lithic Wacke (SiO2 + diverse mineral fragments)
Red Jasper
Jasper (Silicate Mineral), SiO2 with Fe2O3 inclusions
Sandstone
Arenite (primarily SiO2, silica)
Chert
Microcrystalline Quartz (SiO2)