Coarse-grained Granite
Granitoid (KAlSi3O8 + SiO2 + NaAlSi3O8)
Category
Browse mineral (processed metal) specimens identified by the Rock Identifier community.
Coarse-grained Granite
Granitoid (KAlSi3O8 + SiO2 + NaAlSi3O8)
Green Calcite
Calcium Carbonate (CaCO3)
Quartz (Milky to Clear)
Silicon Dioxide (SiO2)
Amazonite
Potassium Feldspar (KAlSi3O8)
Quartz (River Pebble)
Silicon Dioxide (SiO2)
Moss Agate
Chalcedony (Silicon Dioxide, SiO2) with inclusions
Milky Quartz Vein with Iron Staining
Silicon Dioxide (SiO2)
Note: This is a Man-Made Object (Costume/Prop Patch)
Synthetic fiber and pigments (Cellulose/Plastic-based composite)
Parti Sapphire
Corundum (Al2O3)
Serpentinite (Serpentine Rock)
Primarily composed of serpentine group minerals, such as antigorite, chrysotile, and lizardite. Chemical formula for serpentine minerals is (Mg,Fe)3Si2O5(OH)4.
Dalmatian Jasper
Peralkaline rhyolite
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
Gold Nugget
Native Gold (Au)
Ferruginous Quartz
Quartz (Silicon Dioxide) - SiO2 with Iron Oxide inclusions
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
Amethyst and Hematite Bracelet
Amethyst (SiO2) and Hematite (Fe2O3)
Tiger's Eye
Tiger's Eye (Pseudomorph of Quartz after Crocidolite), SiO2
Bauxite
Alumina-rich rock (consisting of Gibbsite, Boehmite, and Diaspore)
Shungite
Shungite (carbon-rich Precambrian rock)
Fancy Jasper
Chalcedony (cryptocrystalline quartz) with inclusions
Banded Flint (Chert)
Silicon Dioxide (SiO2)
Blue Quartzite (Dyed)
Silicon Dioxide (SiO2) with inclusions
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
Green Jasper
Silicon Dioxide (SiO2) with iron silicate inclusions
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
Gold Nugget
Native Gold (Au)
Aquamarine
Beryl (Be3Al2Si6O18 with iron impurities)
Gold Flakes
Native Gold (Au)
Galena
Lead(II) Sulfide (PbS)
Azurite
Azurite (Cu3(CO3)2(OH)2)
Limonite
Hydrous Iron Oxide (often Goethite FeO(OH), Lepidocrocite γ-FeO(OH), and other amorphous iron oxyhydroxides)
Hematite (Botryoidal/Kidney Ore)
Iron(III) oxide (Fe2O3)
Moss Agate
Silicon Dioxide (SiO2) with inclusions of hornblende, chlorite, or manganese/iron oxides
Blue Calcite
Calcium Carbonate (CaCO3)
Ferruginous Quartz
Iron-stained Quartz (Silicon Dioxide + Fe2O3 / FeO(OH))
Pyrite (on Shale/Matrix)
Iron Disulfide (FeS2)
Quartz Pebble (Iron-Stained)
Silicon Dioxide (SiO2)
Petrified Wood
Silicified Wood (SiO2)
Jasper
Jasper (Silicon Dioxide, SiO2)
Synthetic Wolf Plush (Non-mineral)
Canis lupus similis (Prop material: Polyester & Synthetic fibers)
Gold Mineral
Native Gold (Au)
Diorite
Diorite (Intermediate Plutonic Rock)