Home > Laskowski Ⅵ – July 29 > MS1910 Roselite
Roselite
- Aghbar mine
- Bou Azzer
- Ouarzazate Province
- Morocco
- 6.1 × 6.0 × 2.2 cm – Small cabinet specimen (under 10 cm)
Roselite is a hydrous calcium cobalt arsenate, dimorphous with roselite-beta. Lévy & Children (1824) named the mineral after eminent German mineralogist Gustav Rose (1798-1873), professor at the University of Berlin. To this day, the Natural History Museum (London) organizes its mineral collection according Rose's classification system. Roselite owes its intense color to its essential cobalt content; were its crystals much larger they would not transmit light and appear black.
A druse of roselite crystals averaging 2 mm lines a shallow cavity in matrix. A good representation of the species. From the collection of E.R. Laskowski (1949-2020), a mining engineer who retired to Tucson, Arizona.
Price: $200
Item code: MS1910
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