Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
Category
Browse mineral or sedimentary rock (with mineral inclusions) specimens identified by the Rock Identifier community.
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
Milky Quartz
Silicon Dioxide (SiO2)
Conglomerate
Clastic Sedimentary Rock (Conglomerate)
Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
Granitic Pegmatite
Granite (with coarse-grained Quartz, Feldspar, and Mica components)
Quartz Pebble
Silicon Dioxide (SiO2)
Sodalite
Sodalite [Na8(Al6Si6O24)Cl2]
Red Sandstone
Sandstone (principally Quartz with Iron Oxide coating)
Granite
Phaneritic Plutonic Igneous Rock (composed of Quartz, Feldspar, and Mica)
Tree Agate
Silicon Dioxide (SiO2) with Chlorite inclusions
Fluorite with Quartz coating
Calcium Fluoride (CaF2) with Silicon Dioxide (SiO2)
Granite (River-worn Cobble)
Phaneritic Felsic Igneous Rock (primarily Quartz, Potassium Feldspar, and Plagioclase)
Granite Pebble (Salt and Pepper Granite)
Phaneritic Felsic Igneous Rock (primarily Quartz, Feldspar, and Biotite/Amphibole)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Slate
Foliated Metamorphic Rock (primarily composed of quartz, illite, chlorite, and micas)
Gneiss
Gneiss (Metamorphic rock)
Basalt
Extrusive mafic igneous rock
Druzy Quartz on Host Rock
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron inclusions
Moss Agate
Silicon Dioxide (SiO2) with inclusions of Manganese or Iron oxide
Jasper (var. Ocean or Polychrome Jasper)
Silicon Dioxide (SiO2) with iron and mineral inclusions
Quartz-veined Sedimentary Rock
Hydrothermally veined Clastic Sedimentary Rock (SiO2 veins in Matrix)
Muscovite Mica
Muscovite (Potassium Aluminum Silicate Hydroxide Fluoride), KAl2(AlSi3O10)(OH,F)2
Orange Quartz with Hematite inclusions
Quartz (SiO2) with Hematite (Fe2O3) inclusions
Blue Quartzite
Quartzite (primarily SiO2) with inclusions like Dumortierite or Magnesio-riebeckite
Orange Calcite
Calcium Carbonate (CaCO3)
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
Iron-stained Milky Quartz
Silicon Dioxide (SiO2) with iron oxide inclusions
Milky Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
Corundum
Corundum (Al2O3)
Iron Gossan (Limonite/Goethite)
Hydrated Iron Oxides (FeO(OH)·nH2O) from oxidation zones
Quartz Geode
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz Crystal with Inclusions
Silicon Dioxide (SiO2)
Blue-dyed Quartz Druzy
Silicon Dioxide (SiO2) with artificial pigment
Pink Chalcedony
Silicon Dioxide (SiO2)
Asphalt (Bituminous Pavement Bit)
Bitumen-bound aggregate (Petrochemical-bound composite)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Satin Spar (Gypsum)
Hydrous Calcium Sulfate (CaSO4·2H2O)
Basalt Pebble with Epidote/Olivine
Vitreous Basalt (SiO2 with Ca/Mg/Fe silicates)