Works of "Research Collection"
Place Collected: Llallagua
Place Collected: Narssarssuk Pegmatite
Place Collected: Llallagua
Place Collected: Mammoth-Saint Anthony Mine (Mammoth-St Anthony Mine; Mammoth Mine; St. Anthony Mine)
Place Collected: Kol'skiy Poluostrov
Place Collected: Llallagua
Place Collected: Llallagua
Place Collected: Red Ledge Mine
Place Collected: Kangerluarsuk