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Formula: PbAlF3(OH)2
Fluoride
Crystal System: Triclinic
Specific gravity: 5.36 measured, 5.43 calculated
Hardness: 2½
Streak: White
Colour: Colourless
Environments
Localities
At the type locality, Grand Reef Mine, Laurel Canyon, Grand Reef Mountain, Klondyke, Aravaipa Mining District,
Graham County, Arizona, USA, artroeite was found on a single specimen in a 15 x 5 mm2
quartz-lined vug in association with
anglesite and another new mineral of composition
PbCa2Al(F,OH)9. The second new mineral occurs as colourless tabular crystals, as a massive cavity
filling, and as inclusions up to 10 microns in length in artroeite crystals. An intergrowth of
fluorite and galena completely
envelopes the vug. The galena is partially altered to
anglesite. Linarite and
muscovite are only present outside of the
fluorite-galena envelope.
Artroite probably resulted from the reaction of acidic
supergene solutions with
galena and fluorite and was the last
mineral to form in this assemblage
(AM 80.1.179-183).
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