Mineral Information and Data:

Albrechtschraufite  
Ca4Mg(UO2)2(CO3)6F2 • 17H2O [CNMNC approved formula]

Named after Albrecht Schrauf (1837-1897), Austrian crystallographer, University of Vienna, Vienna, Austria.

IMA status : Approved Species 1984 (IMA1983-078)
CLASSIFICATION 
Dana
(8th edition) :
16b.07.11.01  
  (16b) Carbonates - Hydroxyl or Halogen
  (16b.07)
  (16b.07.11)
  
Nickel-Strunz
(10th edition) :
05.ED.15
  (05) Carbonates and Nitrates
  (05.E) Uranyl Carbonates
  (05.ED) UO2:CO3 = 1:3
  
Crystal system: Triclinic System
Point group (H-M): 1 — pinacoidal
Unit cell: a = 13.562 Å, b = 13.406 Å, c = 11.636 Å, a = 115.72°, b = 107.66°, g = 92.86°
Crystal Habit: Crystalline.
  
Color: Yellow-green
Luster: Vitreous
Hardness (Mohs): 2 - 3
Measured Density: 2.5 to 2.6 g/cm3
Streak: White
  
Geologic Setting: On a museum specimen of schrockingerite.
Mineral Association: Schrockingerite, uraninite, dolomite
  
Other Properties: Radioactive.
Comments: Radioactive.

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