sellaite


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sellaite

[′sel·ə‚īt]
(mineralogy)
MgF2 A colorless mineral composed of magnesium fluoride occurring in tetragonal prismatic crystals.
References in periodicals archive ?
A gemmy crystal of sellaite 2.1 cm long from the Huanzala mine was described by Moore (1998).
Sellaite, considered to be the world's finest, is found as crystals that exceed 5 cm in size.
Finally, there was Art Soregaroli's superb sellaite from the Huanzala mine, Huanuco province, Peru: a sharp, gemmy, colorless crystal measuring 2.1 cm.
The copper minerals are always surrounded by, and may be associated with, the alteration minerals sericite, chlorite, quartz, calcite, dolomite, fluorite, sellaite, talc, gypsum and montmorillonite.
No fewer than 30 other halides are found there, including carobbite, sellaite, lawrencite, scacchite, molysite and malladrite.
From the Urals, were masses of nearly pure scaly paragonite from Slyudorudnik, Vyshtym; pecoraite from Tscheremschanskoe; sonolite, alleghanyite, rhodonite, and alabandite from Inyltschek, Kyrgy; tobermorite, from Bazberovskoe; sellaite from Suranskoe, Bashkirien; and clintonite, from Shishimskie Gory.