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 ?
1-cm sellaite crystal on a matrix of quartz, jalpaite, pyrite crystals and chalcopyrite crystals is accompanied by, and partially encloses, native copper wires (identification by E.
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.
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.