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...jamesonite, owyheeite, uchucchacuaite, cassiterite, fluorapatite. Distribution: From the valley of the Levyi...Levyi Vulvyveem river, Amguema river basin, Iultin District, eastern Chukotka Autonomous Okrug, Russia...the region of its type locality, Chukotka Autonomous Okrug, Russia. Type Material: A.E. Fersman Mineralogical |