Quartz Pebble
Silicon dioxide (SiO2)
sedimentary
Category
Sedimentary Mineral
Browse sedimentary mineral specimens identified by the Rock Identifier community.
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Sandstone
Arenite (Sedimentary rock composed of sand-sized grains, primarily SiO2)
sedimentary
Sandstone
Quartz Arenite / Clastic Sedimentary Rock
sedimentary
Limonite / Goethite Ironstone
FeO(OH)·nH2O (Hydrous iron oxide)
mineral
Sandstone
Sandstone (clastic sedimentary rock)
sedimentary
Pyrite on Quartz matrix
Iron Disulfide (FeS2) on Silicon Dioxide (SiO2)
mineral
Specular Hematite
Hematite (Fe2O3)
mineral
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Hematite Mineral Ore
Iron(III) oxide (Fe2O3)
mineral
Brecciated Chert
Sedimentary Chert (SiO2) with Calc-Silicate mineralization
sedimentary
Sandstone with Iron Oxide Coating
Arenite (SiO2 with Fe2O3 impurities)
sedimentary
Travertine
Calcium Carbonate (CaCO3)
sedimentary
Quartz Vein in Hematitic Siltstone
Hydrothermal Quartz (SiO2) in Ferriferous Matrix
metamorphic
Weathered Pyrite Nodule
Iron Sulfide (FeS2) undergoing oxidation to limonite/goethite
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Botryoidal Pyrite
Iron Sulfide (FeS2)
mineral
Sandstone
Sedimentary Clastic Rock (Quartz Arenite)
sedimentary
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Sandstone (Quartz-rich)
Arenite (primarily SiO2)
sedimentary
Sandstone (with Iron Staining)
Clastic sedimentary rock (SiO2 with Fe2O3 oxides)
sedimentary
Pyrite Cubes in Matrix
Iron Disulfide (FeS2) in Host Matrix
mineral side rock
Sandstone with Iron Staining
Arenite with Limonite/Hematite inclusions (SiO2 + Fe2O3/FeO(OH))
sedimentary
Jasper with Quartz Vein
Silicon Dioxide (SiO2)
sedimentary
Banded Onyx (Mexican Onyx / Travertine)
Calcite (CaCO3) - Banded Travertine
sedimentary
Rounded granitic gneiss cobble
Foliated quartz–feldspar–mica gneiss; likely granitoid-derived
metamorphic
Sandstone
Clastic sedimentary rock (Quartz arenite / Arkose)
sedimentary
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Fossilized Tooth Fragment
Vertebrate Fossil (Mammalia indet.)
fossil
Pyrite Nodules / Weathered Pyrite
Iron Sulfide (FeS2)
mineral
Fluorite on Matrix
Calcium Fluoride (CaF2)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Quartz Crystal Cluster / Quartzite
Silicon Dioxide (SiO2)
mineral
Quartz with Matrix
Silicon Dioxide (SiO2)
mineral
Fossilized Shell Fragment
Bivalvia or Gastropoda (Class) fragment
fossil
Ferruginous Siltstone
Siltstone with Magnetite/Hematite bands
sedimentary
Native Copper (Penny specimen)
Native Copper (Cu)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Limonite (Iron Ore)
Limonite (Iron oxide-hydroxide mixture, FeO(OH)·nH2O)
mineral
Magnetite Sand (Black Sand)
Magnetite (Fe3O4)
mineral
Sandstone Pebble
Arenite
sedimentary