Open AccessIndicator mineral signatures of the Mount Pleasant Sn-W-Mo-Bi-In deposit, New Brunswick
Author(s) -
M B McClenaghan,
MA Parkhill,
A. G. Pronk,
GR Boldon,
R M Pyne,
J M Rice
Publication year - 2015
Language(s) - English
Resource type - Reports
DOI - 10.4095/297245
Subject(s) - cassiterite , wolframite , galena , greisen , arsenopyrite , geology , mineral , geochemistry , sphalerite , topaz , fluorite , molybdenite , mineralogy , pyrite , placer mining , hydrothermal circulation , chemistry , chalcopyrite , fluid inclusions , tin , tungsten , organic chemistry , seismology , copper
An indicator mineral study was carried out around the Mount Pleasant Sn-W-Mo-Bi-In deposit as part of the Geological Survey of Canada's (GSC) Targeted Geoscience Initiative 4 (TGI-4), a collaborative federal geoscience program with a mandate to provide industrywith the next generation of geoscience knowledge and innovative techniques that will result in more effective targeting of buried mineral deposits. This indicator mineral study is one of the first systematic case studies around a major Sn-W deposit in glaciated terrain. It is also the firstindicator mineral case study in any terrain to identify a broad range of indicator minerals for this deposit type, in addition to cassiterite and wolframite. Indicator minerals recovered from till at the Mount Pleasant deposit include the main ore minerals, cassiterite, wolframite, and molybdenite,as well as fluorite, topaz, galena, arsenopyrite, and loellingite in the 0.25-0.5 mm, >3.2 SG fraction. Useful indicator minerals in till also include secondary Pb sulphate minerals beudantite (PbFe3(AsO4)(SO4)(OH)6) and anglesite (Pb(SO4)), which formed from the oxidation and weatheringof galena.