X-ray Powder Pattern: Levyi Vulvyveem river valley, Chukotka Autonomous Okrug, Russia. 3.52 (100), 3.38 (50)...100.00 (1) Levyi Vulvyveem river valley, Iultin District, Chukotka Autonomous Okrug, Russia; average electron...uchucchacuaite, cassiterite, fluorapatite. Distribution: From the valley of the Levyi Vulvyveem river, Amguema river...river basin, Iultin District, eastern Chukotka Autonomous Okrug, Russia. Name: For the region of its type...type locality, Chukotka Autonomous Okrug, Russia. Type Material: A.E. Fersman Mineralogical Museum, Russian |