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	 Siderotil Mineral Data 
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General Siderotil  Information 
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  Chemical  Formula:  | 
Fe++SO4•5(H2O)    | 
  Composition:  | 
Molecular Weight = 241.99 gm    | 
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 Iron      23.08 %  Fe   29.69 % FeO  | 
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 Hydrogen   4.17 %  H    37.22 % H2O  | 
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 Sulfur    13.25 %  S    33.09 % SO3  | 
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 Oxygen    59.51 %  O  | 
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          ______        ______   | 
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          100.00 %      100.00 % = TOTAL OXIDE  | 
  Empirical Formula:  | 
Fe2+(SO4)•5(H2O)    | 
  Environment:  | 
Dehydration of cuprian melanterite.    | 
  IMA Status:  | 
Valid Species (Pre-IMA) 1891    | 
  Locality:  | 
Idrija (Idria), Slovenia. Link to MinDat.org Location Data.  | 
  Name Origin:  | 
Named from the Greek for iron, sideros, and for fiber, tilos, for its composition and structure.    | 
  Name Pronunciation:  | 
 Siderotil  + Pronunciation     | 
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