chiolite

chiolite

[′kī·ə‚līt]
(mineralogy)
Na5 Al3F14 A snow white mineral resembling cryolite. Also known as arksutite.
References in periodicals archive ?
Lines covered in the deal include salts, sulphur (except sublimed, precipitated and colloidal sulphur), natural graphite, quartz, silica and quartz sands, kaolin or other kaolinitic clays, bentonite, decolourising earths and Fuller's earth, fire-clay, andalusite, mullite, chamotte, microdol, natural calcium phosphates, natural barium sulphate, natural barium carbonate, gypsum, white asbestos, talc, natural arsenite, strontianite (not stronitium oxide), natural cryolite and chiolite, fluorspar, vermiculite, perlite and chlorites (unexpanded), and others.
A core of sugary, bright purple elpasolite with minor chiolite was found in a mass of brown, translucent cryolite and lavender-gray prosopite.
The paragenetic sequence of secondary aluminum fluorides observed in the pocket is: cryolite to elpasolite and chiolite, followed by thomsenolite, pachnolite and finally ralstonite.
Chiolite occurs as well-formed, water-clear crystals in solution cavities in massive cryolite.
Chiolite has been reported from Ivigtut, Greenland, as irregularly bounded grains up to 10 cm (Petersen and Secher, 1993) in cryolite.
Elpasolite was first identified at the Morefield mine as a bright purple, granular mass (Kearns, 1993a) intergrown with minor chiolite and surrounded by cryolite and prosopite.
Elpasolite crystals are most commonly observed forming "sugary" masses of tiny, colorless trapezohedrons associated with chiolite crystals.
The Morefield elpasolite is associated with prosopite, cryolite, chiolite, thomsenolite, pachnolite and ralstonite.
Bill Baltzley of the Powhatan Mining Company (Route 5, box 6065, Amelia, VA 23002) reports that additional pods of rare fluoride minerals (pachnolite, chiolite, elpasoite, cryolite, thomsenolite, ralstonite) have been found during 1993 at the Morefield pegmatite, near Amelia.