Aedelforsite (of Beudant),
Gillebachite, Gillebäckite, Gjellebäckite, Grammite,
Okenite (of Rink), Parawollastonite, Rivaite, Tabular Spar,
Vilnite, Wollastonite (of Léman)
a fairly common silicate mineral with no unusual elements
in its chemitry although some specimens, especially
those from Franklin, New Jersey, do exhibit bright
orange fluorescence under shortwave UV light. Wollastonite
is primarily used as an important constituent in refractory
ceramics (those ceramics
that are resistant to heat) such as refractory tile and as a filler for
Cabochons created from material from Franklin, New Jersey are very collectible
for their Fluorescent properties.
Wollastonite is named for the English chemist and mineralogist W. H. Wollaston (1766 - 1828).
Its actual mineralogical name is Wollastonite-1T.
The 1T is for the Triclinic symmetry of the most common and first described Wollastonite mineral.
The reason the 1T is needed is to distinguish it from the much more rare Wollastonite-2M, also known as Parawollastonite.
Parawollastonite is Monoclinic.
These minerals are polymorphs which means that they have the same chemistry, CaSiO3, just different structures (poly means many and morph means shape).
There are actually several other rare and obscure polymorphs of CaSiO3 and are given the proposed names of
Wollastonite-3T, Wollastonite-4T, Wollastonite-5T and finally Wollastonite-7T.
All specimens named just Wollastonite are most likely Wollastonite-1T.
is a widely distributed mineral; some prominent localities
are: in Romania, at Dognecea and Csiklova, Banat. In
Italy, at Sarrabus, Sardinia, and from Monte Somma and
Vesuvius, Campania. In Ireland, at Dunmorehead, Mourne
Mountains, and Scawt Hill, near Larne, Co. Antrim. From
Kongsberg, Norway. At Göckum, Sweden. In Germany, at
Harzburg, Harz Mountains, and Auerbach, Odenwald, Hesse.
In the USA, at Natural Bridge and Diana, Lewis County,
New York; from Crestmore, Riverside County, and Darwin,
Inyo County, California; in a large deposit two miles
southeast of Gilbert, Esmeralda County, Nevada. In Canada,
at Oka and Asbestos, Quebec; at Outlet Post, Leeds County,
Ontario. From Pichucalo, Chiapas, and in the Pilares
deposit, 55 km north of Hermosillo, Sonora, Mexico.
At Hiiagiyama, Ibaragi Prefecture; Ishiyamadera, Shiga
Prefecture; and Kushiro, Hiroshima Prefecture, Japan.
Large crystals from Belafa, Madagascar.