Mineral Information and Data:

Barahonaite-(Al)
(Ca,Cu,Na,Fe3+,Al)12Al2(AsO4)8(OH,Cl)x • nH2O [CNMNC approved formula]

Named for its relationship with barahonaite-(Fe).

IMA status : Approved Species 2008 (IMA2006-051)
CLASSIFICATION 
Dana
(8th edition) :
40.05.08.04  
  (40) Hydrated Phosphates
  (40.05) with miscellaneous formulae
  (40.05.08) Smolianinovite Group
  
Nickel-Strunz
(10th edition) :
08.CH.60
  (08) Phosphates, Arsenates, Vanadates
  (08.C) Phosphates without Additional Anions, with H2O
  (08.CH) With large and medium-sized cations, RO4:H2O < 1:1
  
Crystal system: Monoclinic System
Point group (H-M): 2/m — prismatic
Unit cell: a = 9.972Å, b = 22.44Å, c = 5.272Å; β = 92.9°
Crystal Habit: Occurs as isolated beads (rosettes) forming sparse coatings on pharmacosiderite in fracture surfaces. The beads commonly coalesce.
  
Color: Pale blue
Diaphaneity: Transparent to translucent
Luster: Vitreous
Tenacity: Brittle
Streak: White
  
Mineral Association: Arsenocrandallite, arsenogoyazite, conichalcite, cobaltarthurite, chlorargyrite, olivenite, azurite, cornwallite, pharmacosiderite, zálesíite, and lavendulan (Dolores prospect near Pastrana, Murcia province, northern Spain.)
  
Comments: Easily dissolved at room-temperature with10% HCl.

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