Open AccessIndicator mineral signatures of the Halfmile Lake Zn-Pb-Cu volcanogenic massive sulphide deposit, Bathurst, New Brunswick: part 2 - till data
Author(s) -
M B McClenaghan,
G Budulan,
MA Parkhill,
Daniel LaytonMatthews,
Daniel Crabtree
Publication year - 2017
Language(s) - English
Resource type - Reports
DOI - 10.4095/299554
Subject(s) - geology , bedrock , jarosite , geochemistry , pyrite , mineral exploration , mineralization (soil science) , mineral , prospecting , geomorphology , soil science , materials science , metallurgy , soil water
Till and bedrock samples were collected in 2007 and 2008 around the Halfmile Lake Zn-Pb-Cu VMS deposit, Bathurst Mining Camp, as part of the Geological Survey of Canada's Targeted Geoscience Initiative-3 (TGI-3) (2005-2010). This report describes one component ofthe study, which examined the indicator minerals in till samples around the deposit. The Halfmile Lake VMS deposit is capped by a preglacial gossan that formed by chemical weathering and oxidation during the late Pliocene. The mineralogical and geochemical signatures of the glacial dispersal traindown-ice (east) of the deposit reflect this gossan, including secondary minerals goethite, beudantite, and jarosite in the till. Chalcopyrite, pyrite, gold, and cinnabar are also present in the till down-ice of the deposit. The Zn-spinel gahnite, which is known to be an indicator of VMSmineralization, is also present in the local till; however, its bedrock source is not yet known.