Sandstone Concretion
Ferruginous Sandstone Concretion
Category
Browse mineral and sedimentary specimens identified by the Rock Identifier community.
Sandstone Concretion
Ferruginous Sandstone Concretion
Pyrite
Iron Sulfide (FeS2)
Marble
Recrystallized Calcite / Dolomite (CaCO3)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Pyrite in Matrix
Iron Disulfide (FeS2)
Chalcedony
Chalcedony (SiO2)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Specular Hematite (Specularite)
Iron(III) oxide (Fe2O3)
Red Dyed Howlite
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Honey Calcite
Calcium Carbonate (CaCO3)
Optical Calcite (Iceland Spar)
Calcite (Calcium Carbonate, CaCO3)
Agate
Chalcendony (Silicon Dioxide, SiO2)
Pyrite (Iron Pyrite)
Iron Disulfide (FeS2)
Optical Calcite
Calcium Carbonate (CaCO3)
Optical Calcite (Iceland Spar)
Calcium Carbonate (CaCO3)
Orange Calcite
Calcium Carbonate (CaCO3)
Breciated Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Orbicular Jasper (Ocean Jasper variant)
Silicon Dioxide (SiO2) with iron oxide inclusions
Magnetite / Iron Ore
Magnetite (Fe3O4)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Kyanite
Kyanite (Al2SiO5)
Pyrite
Iron Sulfide (FeS2)
Sandstone
Arenite (SiO2 primarily)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite
Sandstone
Arenite (SiO2 primarily)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with iron oxide Fe2O3 cement)
Sandstone (Arkose/Quartzose)
Arenite (SiO2 based clastic rock)
Sandstone
Arenite (SiO2 based)
Sandstone
Arenite (composed primarily of SiO2)
River Pebble (Sandstone)
Clastic Sedimentary Rock (Sandstone)
Chert
Chert (SiO2)
Quartz Druzy on Matrix
Silicon Dioxide (SiO2)
Amethyst Geode
Amethyst/Purple Quartz (SiO2)
Quartz (with inclusions / Sandstone fragment)
Silicon Dioxide (SiO2)
Fossilized Shark Tooth (Fragment) in Matrix
Elasmobranchii (subclass)
Jasper with Quartz vein
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Moqui Marble
Hematite Concretion (Iron Oxide Concretion)
Caribbean Calcite
Calcite (CaCO3) with Aragonite (CaCO3)
Blue Apatite
Apatite-(CaF), Ca5(PO4)3F