Photo Credit: Christian Rewitzer

Formula: FePO₄ · 2H₂O
System: Orthorhombic
Colour: Purple, violet, pink, ...
Hardness: 3½ - 4

From: Folgosinho, Gouveia, Guarda District, Centro Region, Portugal

Strengite is a relatively rare iron phosphate mineral. The mineral is named after the German mineralogist Johann August Streng.

 
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