Artroeite

Artroeite (Pb[AlF3(OH)2]) is a mineral found in Arizona. It is named for the late American chemist Arthur Roe.
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General Information:
 Chemical Formula:
PbAlF3(OH)2
 Composition:
(Molecular Weight = 325.19 gm)
Aluminum 8.30 % Al
Hydrogen 0.62 % H 
Lead 63.72 % Pb
Oxygen 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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