Amethyst Quartz Druse
Silicon Dioxide (SiO2) with iron impurities
Category
Browse sedimentary (processed mineral product) specimens identified by the Rock Identifier community.
Amethyst Quartz Druse
Silicon Dioxide (SiO2) with iron impurities
Diamond Drill Core (Greenschist and Quartzite)
Chlorite Schist / Meta-quartzite (Metamorphic Rock Core Sample)
Gold in Quartz
Hydrothermal Quartz with Native Gold (SiO2 with Au)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Amazonite (likely mixed with other feldspars/minerals)
Amazonite is a variety of Microcline, which is a tectosilicate mineral, formula KAISi3O8. The mixed beads could include other feldspars or quartz.
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Turquoise in Matrix
Hydrated phosphate of copper and aluminum (CuAl6(PO4)4(OH)8·4H2O)
Turquoise with Pyrite
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O] with Iron Pyrite (FeS2)
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
Moqui Marble (Shaman Stone)
Iron Oxide Concretion (Goethite/Hematite shell with Sandstone core)
Turquoise
Hydrated phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O
Sandstone (Ferruginous)
Sandstone (Clastic sedimentary rock, predominantly SiO2 with Fe2O3 cement)
Aragonite Star Cluster
Aragonite (Calcium Carbonate, CaCO3)
Native Copper
Native Copper (Cu)
Grey Chalcedony (Agate)
Silicon Dioxide (SiO2)
Limonite (Iron Ore)
Limonite (̑FeO(OH)·nH₂O)
Diamond
Carbon (C)
Opal
Hydrated Silica (SiO2·nH2O)
Yellow Jasper
Silicon Dioxide (SiO2)
Quartz Geode with Goethite/Hematite
Silicon Dioxide (SiO2) with Iron Oxides
Fluorite
Calcium Fluoride (CaF2)
Ferruginous Quartz
Silicon Dioxide (SiO2) with Hematite/Limonite impurities
Blue Dyed Agate
Silicon Dioxide (SiO2)
Rough Quartz (Alluvial Pebbles)
Silicon Dioxide (SiO2)
Opal
Hydrated Amorphous Silica (SiO2·nH2O)
Limonite (Ironstone)
Limonite (FeO(OH)·nH2O)
Petrified Wood
Silicified Wood (SiO2)
Green Jasper
Silicon Dioxide (SiO2) with mineral inclusions
Sandstone
Arenicola (comprising mostly Quartz, SiO2)
Gneiss
Gneiss (High-grade metamorphic rock)
Sandstone (Quartz-rich)
Arenite (primarily SiO2)
Sandstone (likely Quartz Sandstone)
Arenite (composed primarily of SiO2)
Pebble (likely Quartz or Chert)
SiO₂ (Silicon Dioxide) - referring to the likely main mineral composition, Quartz. If it's chert, the scientific name remains SiO₂ with a microcrystalline structure.
Pyrite
Pyrite (FeS₂)
Sandstone (with potential fossil inclusions)
Clastic sedimentary rock (primarily SiO2)
Quartz (Milky/Rose Quartz variety)
Silicon Dioxide (SiO2)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
Iron Slag
Anthropogenic Vitreous Silicate (Byproduct of Smelting)
Sandstone Concretion with Quartz Center
Sedimentary Clastic Rock (SiO2 matrix with Quartz core)
Larimar
Pectolite (a variety of pectolite, NaCa2Si3O8(OH))
Fluorite
Calcium Fluoride (CaF2)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily Quartz with Hematite/Limonite oxides)