Mineral Information and Data:

Aravaipaite
Pb3AlF9 • H2O [CNMNC approved formula]

Named for the Aravaipa mining district, Arizona, USA, where the mineral occurs.

IMA status : Approved Species 1988 (IMA1988-021)
CLASSIFICATION 
Dana
(8th edition) :
11.06.19.01  
  (11) Halide Complexes; Alumino-fluorides
  (11.06) with miscellaneous formulae
  (11.06.19)
  
Nickel-Strunz
(10th edition) :
03.DC.35
  (03) Halides
  (03.D) Oxyhalides, Hydroxyhalides and Related Double Halides
  (03.DC) With Pb (As,Sb,Bi), without Cu
  
Crystal system: Triclinic System
Point group (H-M): 1 — pedial
Unit cell: a = 5.842Å, b = 25.2Å, c = 5.652Å α = 93.84°, β = 90.14°, γ = 85.28°
Crystal Habit: Thin lamellar plates 0.001-0.1 mm thick up to 3 mm across
Twinning: Polysynthetic on {010}, universal
  
Color: Colorless
Diaphaneity: Transparent
Luster: Vitreous to pearly
Hardness (Mohs): 2
Measured Density: 6.37 (calculated) g/cm3
Cleavage: 5; {010} perfect micaceous; {100}, {001}, {101}, {101}good
Tenacity: Flexible
Streak: White
  
Geologic Setting: In the oxidized zone of an epithermal Pb–Cu–Ag deposit hosted by a silicified rhyolite-schist breccia.
Mineral Association: Grandreefite, pseudograndreefite, laurelite, fluorite, galena, anglesite, linarite, caledonite, quartz
  
Other Properties: H2O Soluble.

 

Aravaipaite
Aravaipaite on a matrix of galena, associated with light green fluorite, clear quartz and possibly grandreefite
Origin: Grand Reef mine, Aravaipa mining district, Graham Co., Arizona, USA
Sample size: 7 x 6 x 4 cm
Photo: Tom Loomis

 

Aravaipaite
(zoom-in of above)

<<< BACK TO MINERAL SEARCH