Holtite
Al6(Al,Ta)(SiO4,SbO4,AsO4)3(BO3)O3
Holite with lepidolite in a granite pegmatite of the LCT (Li–Cs–Ta-enriched) type
Voronyi Tundry, Northern Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
Robbins notes that Kola Peninsula, Russia holtite fluoresces blue-white under shortwave UV and that Greenfields, Western Australia, Australia holtite fluoresces orange under shortwave and yellow under longwave.
View is 4 cm wide.
White Light |
SW |
|
Holtite |
White |
Blue - White |
Lepidolite |
Grey - Violet |
Yellow |
Web References
See Maurice de Graaf’s page on the geology of the Kola Peninsula and Voronyi Tundry.
Don’t miss his geologic map of the peninsula. Voronyi Tundry lies in the east-west trending Kolmozero-Voronja belt.
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