Home > Laskowski Ⅳ – July 13 > MS1887 Fersmanite
Fersmanite
- Eveslogchorr Mountain
- Khibiny Massif
- Kola Peninsula
- Russia
- 3.4 × 2.7 × 1.9 cm – Thumbnail specimen (fits into a 2.5 cm cube)
Fersmanite is a calcium sodium titanium silicate fluoride. Labuntsov (1929) named the mineral after Aleksandr Fersman (1883-1945), eminent Russian mineralogist, geochemist, and gemologist, and the namesake for the Fersman Mineralogical Museum in Moscow. In their crystal chemical study of fersmanite, Sokolova et al. (2002) proposed two chemical formulae for the mineral. This sample is from the type locality.
Fersmanite forms glassy brown crystals to 2 mm. The matrix consists of nepheline, aegirine, and microcline. From the collection of E.R. Laskowski (1949-2020), a mining engineer who retired to Tucson, Arizona.
Price: $45
Item code: MS1887
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