Metamorphic/magmatic massive sulphide indicator minerals are coarse-grained indicator minerals used to explore for a variety of mineral commodities. MMSIMs are derived from three main types of base metal deposits and their associated alteration or reaction zones: (1) volcano-sedimentary massive sulphides (encompassing volcanogenic, Sedex and Mississippi Valley subtypes) in medium to high grade regional metamorphic terrains; (2) skarn and greisen deposits; and (3) magmatic Ni-Cu sulphides.
Averill, S.A. (2001). The application of heavy indicator mineralogy in mineral exploration with emphasis on base metal indicators in glaciated metamorphic and plutonic terrains. Geological Society, London, Special Publications 2001, v. 185, p. 69-81.
Source: Geological Society, London, Special Publications 2001, v. 185, p. 69-81.
Geological keywords, such as “granite”, “lake”. The definitions are generally taken from the AGI Glossary of Geology. Keywords with a geographic context (e.g. Cape Smith Fold Belt, Selwyn Basin, Grenville Province) are assigned to a separate category.
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