Home > Laskowski Ⅵ – July 29 > MS1920 Grunerite
Grunerite
- Michigamme mine
- Marquette County
- Michigan
- U.S.A.
- 5.9 × 4.0 × 2.8 cm – Miniature specimen (fits into a 5 cm cube)
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
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