Bauxite / Iron-rich Laterite
Laterite (principally Al(OH)3, Fe2O3, and SiO2)
sedimentary
Category
Mineral Or Sedimentary Rock (With Mineral Inclusions)
Browse mineral or sedimentary rock (with mineral inclusions) specimens identified by the Rock Identifier community.
Agate Geode
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Gneiss (specifically Granitic Gneiss)
Gneiss (composed primarily of Quartz, Feldspar, and Biotite/Amphibole)
metamorphic
K2 Jasper (Beads)
Granodiorite with Azurite and Malachite
igneous
Gneiss (Cobble)
Gneiss
metamorphic
Red Jasper (Opaque Chalcedony)
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone (Ferruginous)
Clastic Sedimentary Rock (SiO2 with Fe2O3/FeOOH cement)
sedimentary
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with goethite or iron oxide inclusions
sedimentary
Orange Quartz (or Tumbled Carnelian)
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Druzy Quartz Geode (Oco or Moroccan variety)
Silicon Dioxide (SiO2)
mineral
Carnelian (Banded Agate)
Chalcedony (SiO2) with Iron Oxide inclusions
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Turquoise in Matrix
Hydrated phosphate of copper and aluminum (CuAl6(PO4)4(OH)8·4H2O)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
sedimentary
Goldstone (Synthetic Aventurescence Glass)
Cuprous Aventurescent Glass (Silicon Dioxide with Copper inclusions)
mineraloid / man-made material
Milky Quartz Pebble
Quartz (Silicon Dioxide - SiO2)
mineral
Quartz Druzy Geode
Silicon Dioxide (SiO2) - Crystalline Variety
mineral
Sandstone (likely Iron-rich or Arkosic)
Arenite (SiO2 with FeO(OH) or Fe2O3 staining)
sedimentary
Limonite (Iron-rich Siltstone / Sandstone base)
Hydrous ferric oxide mixture (FeO(OH)·nH2O)
sedimentary
Bauxite
Bauxite (Al2O3·2H2O)
sedimentary
Sandstone (Quartzite Pebble)
Arenite (primarily SiO2)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Quartz (Chert/Chalcedony variety)
Silicon Dioxide (SiO2)
mineral
Orange Calcite (Polished Sphere)
Calcium Carbonate (CaCO3)
mineral
Limonitic Iron Ore / Goethite
Hydrated Iron(III) oxide-hydroxide (primarily FeO(OH)·nH2O)
sedimentary
Sandstone or Quartzite
Arenite (if sedimentary) / Quartzite (if metamorphic)
Sedimentary or Metamorphic
Jasper with Agate Inclusions
Silicon Dioxide (SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite with Iron Oxides
sedimentary
Rough Quartz (with potential Host Rock)
Silicon Dioxide (SiO2)
mineral
Quartz (likely a macrocrystalline variety like milky quartz or smoky quartz, given the appearance in the image)
Quartz (SiO₂ - Silicon Dioxide)
Mineral
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Zebra Jasper
Silicon Dioxide (SiO2) with various inclusions
metamorphic/sedimentary
Opal
Hydrated Silica (SiO2·nH2O)
mineral
Ferruginous Quartz
Silicon Dioxide (SiO2) with Hematite/Goethite inclusions
mineral
Granite (Pink/Red variety)
Phaneritic Felsic Intrusive Igneous Rock (composed primarily of Quartz, K-Feldspar, and Plagioclase)
igneous
Bicolor Quartz (Milk Quartz with Slag or Dark Inclusions)
Silicon Dioxide (SiO2) with impurities
mineral
Garden Quartz (Lodalite)
Silicon Dioxide (SiO2) with mineral inclusions
mineral
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral