Mineral Information and Data:

Artroeite
PbAlF3(OH)2 [CNMNC approved formula]

Named for Dr. Arthur (Art) Roe (1912-1993), American chemist and collector of microscopic minerals, Tucson, Arizona, USA.

IMA status : Approved Species 1995 (IMA1993-031)
CLASSIFICATION 
Dana
(8th edition) :
11.06.18.01  
  (11) Halide Complexes; Alumino-fluorides
  (11.06) with miscellaneous formulae
  (11.06.18)
  
Nickel-Strunz
(10th edition) :
03.CC.15
  (03) Halides
  (03.C) Complex Halides
  (03.CC) Soro-aluminofluorides
  
Crystal system: Triclinic System
Point group (H-M): 1 — pinacoidal
Unit cell: a = 6.27Å, b = 6.821Å, c = 5.057Å α = 90.68°, β = 107.69°, γ = 104.46°
Crystal Habit: Crystals bladed, flat tabular on {101}, elongated along [010], to 1 mm,
Twinning: Common, by rotation about [010] with composition plane {100}
  
Color: Colorless
Diaphaneity: Semi-transparent
Luster: Vitreous
Hardness (Mohs): 2.5
Measured Density: 5.36(2) g/cm3
Cleavage: Perfect on {100}, good on {010}
Tenacity: Brittle
Fracture: Conchoidal
Streak: White
  
Geologic Setting: In the oxidized zone of an epithermal Cu–Pb–Ag deposit.
Mineral Association: Calcioaravaipaite, quartz, anglesite, fluorite, galena, linarite, muscovite
  

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