Home > Laskowski Ⅷ – September 21 > MS1964 Arfvedsonite


Aegirine is an iron sodium silicate, and a member of the amphibole group (Hawthorne et al. 2012). Brooke (1823) named the species after Johan Arfwedson [sic] (1792-1841), Swedish chemist who discovered lithium.

Arfvedsonite forms blocky crystals to 1.6 × 1.3 cm on a microcline matrix. At Mount Malosa, arfvedsonite is significantly (magnitudes?) rarer than aegirine. This is a choice example. From the collection of E.R. Laskowski (1949-2020), a mining engineer who retired to Tucson, Arizona.

Price: $75

Item code: MS1964

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