Quartz (Milky Quartz Pebbles)
Silicon Dioxide (SiO2)
Category
Browse non geological specimens identified by the Rock Identifier community.
Quartz (Milky Quartz Pebbles)
Silicon Dioxide (SiO2)
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
Pyrite
Iron Disulfide (FeS2)
Green Fluorite
Fluorite (Calcium Fluoride - CaF2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Quartz (Milky/Smoky variety)
Silicon Dioxide (SiO2)
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Chert Geode with Quartz Druzy
Microcrystalline Quartz (SiO2) with macrocrystalline Quartz
Granite
Granite (Felsic Plutonic Rock)
Rhodolite Garnet
Magnesium Aluminum Silicate; formula: (Mg,Fe)3Al2(SiO4)3
Quartzite
Quartzite (SiO2)
Pink Feldspar (Orthoclase)
Orthoclase Feldspar (KAlSi3O8)
Conglomerate
Conglomerate (clastic sedimentary rock)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Chert (specifically Jasper/Flint)
Microcrystalline Quartz (SiO2)
Citrine
Silicon Dioxide (SiO₂)
Andesite
Andesite (Intermediate Extrusive Volcanic Rock)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
Pyrite (on Quartz matrix)
Iron Sulfide (FeS2)
Blue Chalcedony
Silicon Dioxide (SiO2)
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
Jasper
Silicon Dioxide (SiO2)
Fossilized Bone Fragment
Permineralized Vertebrate Bone (Hydrox yapatite replaced by Silica or Calcite)
Quartz (Grain/Fragment)
Silicon Dioxide (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with iron hydroxides (Goethite)
Quartz (specifically Milky or Rose Quartz variant)
Silicon Dioxide (SiO2)
Muscovite Mica
Muscovite / KAl2(AlSi3O10)(OH)2
Quartz (specifically Milky or Clear Quartz)
Silicon Dioxide (SiO2)
Serpentine, likely a variety of Chrysoprase (green chalcedony) or a similar translucent green mineral.
Serpentine Group Minerals (e.g., Antigorite, Lizardite) or Chalcedony (SiO2) with nickel impurities for Chrysoprase green.
Sunstone
Aventurine Feldspar ((Ca,Na)(Al,Si)4O8)
Amethyst (Faceted)
Quartz (SiO2) with iron impurities
Nephrite Jade
Ca2(Mg, Fe)5Si8O22(OH)2
Granite
Phaneritic Felsic Igneous Rock (composed primarily of Quartz and Alkali Feldspar)
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Pyrite
Iron Sulfide (FeS2)
Granite
Granite (Silicic Intrusive Igneous Rock)
Red Jasper
Silicon dioxide (SiO2) with iron oxide inclusions
Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese
Clear/White Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Milky Quartz with inclusions
Quartz (Silicon Dioxide, SiO2)