DescriptionVLASOVITE - ONE OF THE BEST OF A RARE FLUORESCENT
Kipawa Complex, Villedieu Township, Temiskaming Co., Quebec Province, Canada
The Kipawa Complex is an alkaline syenite intrusion, a rare type of intrusive rock body similar to Granite but lacking the Quartz component (or with only small amounts). Such intrusions are known from only about thirty occurrences around the globe, each one similar yet unique in its particular mineral composition. The Kipawa intrusion has many similarities to the Kola Peninsular intrusions of far northern Russia, where the very rare silicate Vlasovite was first discovered in 1961, at Vavnbed Mountain in the Lovozero Massif. Vlasovite was known only from small, platy blebs with good cleavage and a strong, buttery, yellow fluorescence under shortwave ultraviolet rays. Until the find in the mid-1990s, which yielded the present specimen, perhaps the best-known example was a large thumbnail-sized specimen only about 1¼ inches (3.2 cm) across. The mid-1990s discovery produced approximately 30 specimens of small to large cabinet size, all of which equaled or bettered the richness of the finest specimens of fluorescent Vlasovite known up to that time. The example offered here has one of the very largest contiguous masses of Vlasovite, measuring over 2½ inches (6.4 cm) long and about ¾ inches (1.9 cm) wide, with several smaller masses in the same matrix, all fluorescing a bright butter yellow under shortwave. There are also small areas of red-fluorescing Albite (also under shortwave), and non-fluorescing black grains of Aegirine, var. Acmite, all set in a matrix of non-fluorescent but exotic ruby-red Eudialyte.
Provenance: Field collected by Darryl MacFarland; ex. Hugh Ronemus Collection
Condition report available upon request.
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