Mineral Information and Data:

Aksaite
MgB6O7(OH)6 • 2H2O [CNMNC approved formula]

Named for the locality: Chelkar, Ak-Sai Valley, Uralsk district, Kazakhstan.

IMA status : Approved Species 1962 ()
CLASSIFICATION 
Dana
(8th edition) :
26.06.04.01  
  (26) Hydrated Borates Containing Hydroxyl or Halogen
  (26.06)
  (26.06.04)
  
Nickel-Strunz
(10th edition) :
06.FA.05
  (06) Borates
  (06.F) Hexaborates
  (06.FA) Neso-hexaborates
  
Crystal system: Orthorhombic System
Point group (H-M): mmm (or 2/m 2/m 2/m) — dipyramidal
Unit cell: a = 12.54 Å, b = 24.35 Å, c = 7.484 Å
Crystal Habit: Crystals elongated, flattened
  
Color: Light gray, colorless in small crystals
Diaphaneity: Translucent
Luster: Dull
Hardness (Mohs): 2.5
Measured Density: 1.99 g/cm3
Cleavage: 2; {100} and {010} probable
Tenacity: No data
Streak: White
  
Geologic Setting: In fine-grained halite in a salt dome.
Mineral Association: Kieserite, anhydrite, preobrazhenskite, boracite, ginorite, halurgite, strontioborite, metaborite, halite
  

 

Aksaite
Origin: Chelkar Salt dome, Ak-Sai Valley, Kazakhstan
Sample size: Capsule
Photo: Diederik Visser

<<< BACK TO MINERAL SEARCH