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Allophane | Alunite | Amblygonite | Amorphous Silica | Anatase | Andalusite | Anorthite | Anorthosite | Aplite | Aragonite | Asbestos | Attapulgite, Palygorskite | Azurite | Baddeleyite | Ball Clay | Barytes, Barite | Bastnäsite | Bauxite | Berthierite | Beryl | Biotite | Boracite | Borate Minerals | Bornite | Brookite | Brucite | Calcite | Cassiterite | Celsian | Cerussite | Chalcedony | Chlorite | Chrysotile | Corundum | Dickite | Dolomite | Fayalite | Feldspar | Galena | Gibbsite | Granite | Gypsum | Hübnerite | Halloysite | Hectorite | Hematite | Hydroboracite | Illite | Illmenite | Iron Pyrite | K-Feldspar | Kaolinite | Kernite | Kyanite | Laterite | Lepidolite | Leucite | Limestone | Limonite | Magnesite | Magnetite | Malachite | Manganite | Mica | Microcline, Anorthoclase | Monazite | Montmorillonite, Bentonite | Mullite | Muscovite | Na-Feldspar | Nacrite | Nepheline | Nontronite | Oligoclase | Olivine | Organics | Pegmatite | Phlogopite Mica | Plagioclase | Potash Mica | Pyrophyllite | Quartz | Quartzite | Rutile | Sanidine | Saponite | Selenite | Sepiolite | Sericite | Serpentine | Shale | Sillimanite | Slate | Smectite | Soda Mica | Sodalite | Sphalerite | Steatite | Stibnite | Sylvite | Talc | Tremolite | Trona | Vanadinite | Willemite | Witherite | Zeolite

Chalcedony

Formula: SiO2

A cryptocrystalline form of silica.

Related Information

Links

URLs http://en.wikipedia.org/wiki/Chalcedony
Chalcedony on Wikipedia
Materials Silica
Silica, sold as a white powder, is pure quartz mineral. Quartz is pure SiO2 silicon dioxide. It is the most abundant mineral on earth and most used in ceramics.

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