Mineral Information and Data:

Althupite  
AlTh(UO2)7(PO4)4O2(OH)5 • 15H2O [CNMNC approved formula]

Named for the major cations in the composition, Aluminum, Thorium, Uranium, Phosphorus.

IMA status : Approved Species 1986 (IMA1986-003)
CLASSIFICATION 
Dana
(8th edition) :
42.04.13.01  
  (42) Hydrated Phosphates Containing Hydroxyl or Halogen
  (42.04) where (AB)5 (XO4)2 Zq · x(H2O)
  (42.04.13)
  
Nickel-Strunz
(10th edition) :
08.EC.25
  (08) Phosphates, Arsenates, Vanadates
  (08.E) Uranyl Phosphates and Arsenates
  (08.EC) UO2:RO4 = 3:2
  
Crystal system: Triclinic System
Point group (H-M): 1 — pinacoidal
Unit cell: a = 10.953 Å, b = 18.567 Å, c = 13.504 Å, a = 72.64°, b = 68.20°, g = 84.21°
Crystal Habit: Thin tablets to 0.1 mm, in parallel groups
  
Color: Yellow
Diaphaneity: Transparent to translucent
Luster: Vitreous
Hardness (Mohs): 3.5 - 4
Measured Density: 3.9 g/cm3
Streak: Yellow white
  
Geologic Setting: A secondary mineral in the uraniferous zone of an altered granite pegmatite.
Mineral Association: Beryl, columbite, ranunculite, upalite, phuralumite, threadgoldite, mundite, triangulite, meta-autunite
  
Other Properties: Radioactive.
Comments: Radioactive.

<<< BACK TO MINERAL SEARCH