Mineral Information and Data:

Brockite  
(Ca,Th,Ce)PO4 • H2O [CNMNC approved formula]

Named To honor Maurice R. Brock, U.S. Geological Survey, who supplied the first specimen.

IMA status : Approved Species 1962 ()
CLASSIFICATION 
Dana
(8th edition) :
40.04.07.05  
  (40) Hydrated Phosphates
  (40.04) where A+++ XO4 · x(H2O)
  (40.04.07) Rhabdophane Group
  
Nickel-Strunz
(10th edition) :
08.CJ.45
  (08) Phosphates, Arsenates, Vanadates
  (08.C) Phosphates without Additional Anions, with H2O
  (08.CJ) With only large cations
  
Crystal system: Hexagonal System
Point group (H-M): 622 — trapezoidal
  
  
  
Other Properties: Radioactive.
Comments: Radioactive.

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