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Natrodufrénite from
Poniklá, Jilemnice, Semily District, Liberec Region, Czech Republic

Classification
Species:Natrodufrénite
Formula:NaFe2+Fe53+(PO4)4(OH)6 · 2H2O
Habit:radial aggregates up to 1,5 cm, tabular csrytals
Colour:black, brown, dark green
Quality for species:Excellent - world class for species or very significant. (!!)
Abundance at site:Common
Confirmation
Validity:Believed Valid
References
References:Škoda, R., Rus, P.: Revize dufrenitu z Poniklé. Minerál, 2010, roč. 18, č. 2, s. 119-123.
Associated Minerals Based on Photo Data:
Variscite1 photo of Natrodufrénite associated with Variscite at this locality.
Data
Mineral Data:Click here to view Natrodufrénite data
Locality Data:Click here to view Poniklá, Jilemnice, Semily District, Liberec Region, Czech Republic
 
Mineral and/or Locality  
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