Low-Sulfide PGE Ore in the Volchetundra Gabbro–Anorthosite Pluton, Kola Peninsula, Russi

V.V. Chashchin, S.V. Petrov

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Abstract

Abstract—The internal structure of the Volchetundra gabbro–anorthosite massif is considered, including localization of low-sulfide PGE mineralization and its mineralogy. The Volchetundra massif 24 km long and 0.5–4.0 km wide occupies the middle part of the Main Range complex, which extends for 75 km in the nearly meridional direction. The main and marginal zones are distinguished in the massif. The marginal zone 20–400 m wide extends along the entire eastern contact of the massif and is primarily composed of medium grained meso and leucocratic norite, gabbronorite, plagioclasite, and less fequent rthopyroxenite. The main zone consists of coarse-grained leucogabbro and gabbronorite with an anorthosite zone in the axial part of the massif. The PGE mineralization of the Volchetundra massif is distinctly subdivided into two types sub stantially differing in localization, mineralogy, geochemistry, and economic importance. Mineralization of the first type is localized in the marginal zone and characterized by the h
Original languageUndefined
Pages (from-to)357–382
JournalGeology of Ore Deposits
Volume55
Issue number5
StatePublished - 2013

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