Home > Laskowski Ⅵ – July 29 > MS1920 Grunerite


Grunerite is a hydrous iron silicate, specifically a member of the amphibole group (Hawthorne et al. 2012). Adolf Kenngott named grunerite in his 1853 Mohs'sche Mineralsystem. The mineral name honors French chemist Louis Emmanuel Gruner (1809-1883), who first analyzed the mineral.

Grunerite forms radiating aggregates to 0.9 cm across in massive magnetite-hematite. From the collection of E.R. Laskowski (1949-2020), a mining engineer who retired to Tucson, Arizona.

Price: $45

Item code: MS1920

For ordering, please use the order form.