Mineral Information and Data:

Clearcreekite
Hg1+3(CO3)(OH) • 2H2O [CNMNC approved formula]

Named for the locality: Prospect pit near the former Clear Creek mercury mine, New Idria district, San Benito County, California, USA.

IMA status : Approved Species 1999 ()
CLASSIFICATION 
Dana
(8th edition) :
16b.04.04.02  
  (16b) Carbonates - Hydroxyl or Halogen
  (16b.04) where (A)m (B)n (XO3)p Zq · x(H2O), with (m+n):p=8:1
  (16b.04.04)
  
Nickel-Strunz
(10th edition) :
05.DC.30
  (05) Carbonates and Nitrates
  (05.D) Carbonates with Additional Anions, with H2O
  (05.DC) With large cations
  
Crystal system: Monoclinic System
Point group (H-M): 2/m — prismatic
  
  
  

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