Home > American Minerals – January 11 > MS1997 Boromuscovite on Albite
Boromuscovite on Albite
- Little Three mine
- Ramona
- San Diego County
- California
- U.S.A.
- 6.2 × 5.5 × 2.8 cm – Small cabinet specimen (under 10 cm)
Boromuscovite is a potassium aluminum borosilicate, specifically a member of the mica group (Rieder et al., 1998). Boromuscovite forms porcelain like coatings over other pegmatite minerals. Foord et al. (1991) named the species for its boron content and chemical relationship to muscovite.
Boromuscovite here forms a thin (>1 mm) coating on albite and microcline. Many specimens from this locality have their boromuscovite coatings removed to uncover gem crystals. Fortunately this specimen retains its exotic boromuscovite coating. From the collection of E.R. Laskowski (1949-2020), a mining engineer who retired to Tucson, Arizona. Also present is a label from Mark and Jeannette Rogers, California based dealers active in the 1990s.
Price: $100
Item code: MS1997
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