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Strengite - Sold

Strengite is a hydrous phosphate of iron. Nies (1877) named strengite after Professor Johan A. Streng (1830-1897), mineralogist at the University of Giessen (Germany). Strengite is a widespread phosphate mineral, typically forming small botryoids. Strengite here forms an exceptional radiating aggregate, 1.1 cm across. While the individual crystals are elongate, they are very large for the species (i.e. 5-6 mm).

From the collection of E.R. Laskowski (1949-2020). Laskowski acquired this specimen from Dakota Matrix in 2010; labels from Laskowski and Dakota Matrix accompany the specimen.