Quartz Pebble (Water-worn)
Silicon Dioxide (SiO2)
mineral
Category
Mineral (Synthetic Paper And Ink Polymorph)
Browse mineral (synthetic paper and ink polymorph) specimens identified by the Rock Identifier community.
Sodalite
Na8(Al6Si6O24)Cl2 (Sodium Aluminum Silicate Chloride)
mineral
Cupronickel (on a 1981 Mexico 20 Pesos coin)
Copper-Nickel Alloy (Cu75Ni25)
mineral
Arsenopyrite in Quartz Matrix
Arsenopyrite (FeAsS)
mineral
Pyrite (Fool's Gold) in Matrix
Iron Sulfide (FeS2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Moonstone
Orthoclase Feldspar ((K,Na)AlSi3O8)
mineral
Feldspar (Orthoclase/Potassium Feldspar)
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Tumbled Stone Collection (featuring Tiger's Eye, Rose Quartz, and Moss Agate)
Mixed Silicates and Oxides (predominantly SiO2 group minerals)
mineral
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
mineral
Limonite (Iron Stone/Goethite)
Limonite (mixture of hydrated iron oxides, primarily Goethite: α-FeO(OH))
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Pink Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Jasper Beads (Polished)
Silicon Dioxide (SiO2)
sedimentary
Mookaite Jasper
Silicified Radiolarite (SiO2)
sedimentary
Quartz vein in Schist
Crystalline Silicon Dioxide (SiO2) in Metamorphic Host
metamorphic
Sandstone with Magnetite and Iron Staining
Clastic Sedimentary Rock (contains Fe3O4 and Limonite/Hematite)
sedimentary
Smoky Quartz and Feldspar Pegmatite
Granitic Pegmatite (chiefly SiO2 and KAlSi3O8)
igneous
Granitic Pegmatite with Schorl Tourmaline
Granitic Pegmatite (Schorl: NaFe3Al6(BO3)3Si6O18(OH)4)
igneous
Stichtite in Serpentine (Atlantasite)
Mg6Cr2CO3(OH)16·4H2O in Mg3Si2O5(OH)4
metamorphic
Epidote (likely Unakite component or Epidosite)
Epidote (Ca2(Al2Fe)(SiO4)(Si2O7)O(OH))
metamorphic
Quartz Geode
Quartz (Silicon Dioxide, SiO2) Geode
sedimentary
Yooperlite (Sodalite-bearing Syenite)
Sodalite-rich Syenite
igneous
Fire Opal (in matrix)
Hydrated Silica (SiO2·nH2O)
Mineraloid
Opal
Hydrated silica (SiO2·nH2O)
mineraloid
Iron Slag (Industrial Byproduct)
Anthropogenic Vitrification Product/Ferrous Slag
Mineral-like Industrial Smelting Waste
Quartz in Limonite-rich Matrix
Silicon Dioxide (SiO2) with Goethite/Limonite FeO(OH)·nH2O
Mineral in Sedimentary/Secondary host
Zoisite with Ruby (Anyolite)
Anyolite (Ca2Al3(SiO4)3(OH) + (Hb, Al, Cr)2O3)
metamorphic
Zoisite with Ruby / Anyolite
Anyolite (Ca2Al3(SiO4)3(OH) with Chromian Zoisite and Tschermakite inclusions)
metamorphic
Rose Quartz
Silicon Dioxide (SiO2) with Titanium/Manganese/Iron trace elements
mineral
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Amethyst
Silicon Dioxide (SiO2)
mineral
Milky Quartz Pebble
Quartz (Silicon Dioxide - SiO2)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Diamond
Native Carbon (C)
mineral
Selenite (Satin Spar)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Iron Meteorite
Siderite (meteoritic iron, Fe-Ni alloy)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Satin Spar (Selenite)
Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral