Jasper (likely Polychrome or Ocean Jasper)
Silicon Dioxide (SiO2) with impurities
Category
Browse mineral on sedimentary specimens identified by the Rock Identifier community.
Jasper (likely Polychrome or Ocean Jasper)
Silicon Dioxide (SiO2) with impurities
Chert (Septarian Concretion/Nodule)
Microcrystalline silica (SiO2) with carbonate mineral veining
Garnet in Matrix
Almandine Garnet (Fe3Al2(SiO4)3)
Almandine Garnet in Matrix
Almandine Garnet (Fe3Al2(SiO4)3) in Schist/Quartz Matrix
Sandstone with Quartz Vein
Arenite with Quartz (SiO2) Infilling
Iron-stained Quartz (with Limonite/Hematite)
Silicon Dioxide (SiO2) with Iron Oxide inclusions (FeO(OH) or Fe2O3)
Chalcedony (Common Agate pebble)
Silicon Dioxide (SiO2)
Green Calcite
Calcium Carbonate (CaCO3)
Clear/White Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 inclusions)
Gneiss (specifically a Granitic Gneiss)
Gneiss (typically composed of Quartz, Feldspar, and Mica/Amphiboles)
Travertine (Tufa)
Terrestrial Sedimentary Limestone (CaCO3)
Sandstone
Arenite (SiO2 based)
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
Sandstone (Stream-rounded)
Arenite (SiO2 based)
Sandstone (Quartz-rich)
Sandstone (SiO2 dominated)
Red Sandstone
Arenite (with Iron Oxide / Hematite staining)
Red Sandstone
Arenite (with Iron Oxide pigmentation)
Chalcedony with Druzy Quartz Geode
Silicon Dioxide (SiO2)
Sandstone
Arenite (composed primarily of SiO2)
Banded Sandstone (Differential Weathering)
Clastic Sedimentary Rock (primarily SiO2)
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with iron oxide Fe2O3 cement)
Sandstone
Arenite (composed primarily of SiO2)
Ferruginous Sandstone
Sandstone (arenite) with Limonite/Goethite cement
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
Green Onyx (Banded Calcite)
Travertine (CaCO3 - Calcium Carbonate)
Jasper
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Druzy Quartz (part of a Geode)
Silicon Dioxide (SiO2)
Banded Chert
Cryptocrystalline Quartz (SiO2)
Sandstone
Arenite (primarily SiO2 - Silicon Dioxide)
Quartz with Mica inclusions (likely Schist or Gneiss host)
Silicon Dioxide (SiO2) with Phyllosilicates (KAl2(AlSi3O10)(OH)2)
Blue Kyanite
Kyanite (Al2SiO5)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Quartz Geode
Silicon Dioxide (SiO2) within a secondary sedimentary structure
Sandstone with Quartz Veins
Arenite (primarily SiO2 with Fe2O3 staining)
Sandstone
Arenite (primarily composed of SiO2 - Silicon Dioxide)
Precious Opal in Matrix
Hydrated Silica (SiO2·nH2O)
Opal
Hydrated amorphous form of silica (SiO2·nH2O)
Sandstone (clastic)
Clastic Sedimentary Rock (primarily composed of SiO2)
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)