General Information:
Chemical Formula:PbAlF3(OH)2
Composition:(Molecular Weight = 325.19 gm)Aluminum 8.30 %
AlHydrogen 0.62 %
H Lead 63.72 %
PbOxygen 9.84 %
O Fluorine 17.53 %
F Empirical Formula: PbAlF3(OH)2
Environment:In a quartz-lined vug.
IMA Status:Approved IMA 1993
Locality:The Grand Reef mine, near Klondyke, Graham County, Arizona, USA.
Name Origin:For Dr. Arthur (Art) Roe (1912-1993).
Physical Properties: Cleavage:[100] Perfect, [010] Good
Color:colorless.
Density:5.36 - 5.42, Average = 5.39
Diaphaniety:Transparent
Habits:Bladed - Aggregates of thin lath-like crystals (e.g. kyanite)., ,
Hardness:2.5 - Finger Nail
Luster:Vitreous (Glassy)
Streak:white
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