Roşia Montană, Romania: Europe’s Largest Gold Deposit
2006; Issue: 64 Linguagem: Inglês
10.5382/segnews.2006-64.fea
ISSN2694-0663
AutoresS. L. Manske, Jeffrey W. Hedenquist, G. O'Connor, Călin Gabriel Tămaş, Béatrice Caüuet, Steven Leary, Adrian Minuţ,
Tópico(s)Geochemistry and Geologic Mapping
ResumoABSTRACT Roşia Montană, Romania, is Europe’s largest gold deposit, with a current identifıed resource of ~400 Mt at 1.3 g/t Au and 6 g/t Ag. The deposit is hosted by a Miocene age maar-diatreme complex emplaced into Cretaceous flysch-type sedimentary rocks and intruded by dacite domes. High-resolution 40Ar/39Ar dating of adularia associated with gold-bearing veins suggests a protracted period of episodic mineralization spanning about 500,000 years. The major gold mineral is electrum, associated with pyrite, base-metal sulfıdes, and a variety of Au-Ag sulfosalts and minor tellurides. The overall aspect of the gangue and alteration mineral assemblages, as well as the sulfıde assemblage, is characteristic of intermediate sulfıdation-state epithermal deposits.
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