Mineral Information and Data:

Mereheadite
Pb47O24(OH)13Cl25(BO3)2(CO3) [CNMNC approved formula]

Named after its locality: Merehead Quarry, Cranmore, Somerset, England, U.K.

IMA status : Approved Species 1998 ()
CLASSIFICATION 
Dana
(8th edition) :
10.04.05.01  
  (10) Oxyhalides and Hydroxyhalides
  (10.04) where (A)2 (O,OH) Xq
  (10.04.05)
  
Nickel-Strunz
(10th edition) :
03.DC.45
  (03) Halides
  (03.D) Oxyhalides, Hydroxyhalides and Related Double Halides
  (03.DC) With Pb (As,Sb,Bi), without Cu
  
Crystal system: Monoclinic System
Point group (H-M): 2/m — prismatic
  
  
  

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