Mineral Information and Data:

Pharmacosiderite
KFe3+4(AsO4)3(OH)4 • 6-7H2O [CNMNC approved formula]

Named From the Greek, farmakon for "poison" and sideros for "iron.".

IMA status : Valid species (Pre-IMA 1813) Grandfathered
CLASSIFICATION 
Dana
(8th edition) :
42.08.01.01  
  (42) Hydrated Phosphates Containing Hydroxyl or Halogen
  (42.08) where (AB)7 (XO4)4 Zq · x(H2O)
  (42.08.01) Pharmacosiderite Group
  
Nickel-Strunz
(10th edition) :
08.DK.10
  (08) Phosphates, Arsenates, Vanadates
  (08.D) Phosphates, etc
  (08.DK) With large and medium-sized cations, (OH, etc.):RO4 > 1:1 and < 2:1
  
Crystal system: Cubic System
Point group (H-M): 43m (or 4 3m) — hextetrahedral
  
  
  

<<< BACK TO MINERAL SEARCH