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Ferriallanite-(La)

Type Locality
In den Dellen quarries, Niedermendig, Mendig, Laach lake volcanic complex, Eifel, Rhineland-Palatinate, Germany
Mineral Data
{CaLa}{Fe3+AlFe2+}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05b
Physical Properties
Colour: 
Black
Streak: 
Brown
Hardness: 
6.0 - 0.0
Tenacity: 
brittle
Synonyms
Synonyms: 
Ferriallanite-La, Ferriallanite La and Ferriallanite - La