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	 Klyuchevskite-Duplicate Mineral Data  |  |  | 
   
| General Klyuchevskite-Duplicate  Information  | 
|  Chemical  Formula: | K3Cu3Fe+++O2(SO4)4 | 
|  Composition: | Molecular Weight = 780.03 gm | 
|  | Potassium  15.04 %  K    18.11 % K2O | 
|  | Iron        7.16 %  Fe   10.24 % Fe2O3 | 
|  | Copper     24.44 %  Cu   30.59 % CuO | 
|  | Sulfur     16.44 %  S    41.06 % SO3 | 
|  | Oxygen     36.92 %  O | 
|  | ______        ______ | 
|  | 100.00 %      100.00 % = TOTAL OXIDE | 
|  Empirical Formula: | K3Cu3Fe3+O2(SO4)4 | 
|  Environment: | Deposited by fumaroles. | 
|  IMA Status: | Approved IMA 1989 | 
|  Locality: | Great Tolbachik fissure eruption, Kamchatka, Russia. Link to MinDat.org Location Data. | 
|  Name Origin: | Named after the locality. | 
|  Name Pronunciation: | Klyuchevskite-Duplicate  + Pronunciation   | 
|  Synonym: | Duplicate (see 28-4-6-1) | 
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