TELEMARK Geosciences will present a workshop on Vectoring within Central Victorian Gold Alteration Haloes Using Geochemical and Mineralogical Data

Dennis will present a workshop at the Victorian Minerals Roundup 2019 at the Macedon Spa Resort November 7th on vectoring within the central Victorian goldfields using geochemical and mineralogical data.

This 1-day workshop will involve a review of publicly available geochemical and mineralogical data from representative central Victorian gold deposits, including Bendigo, Ballarat, Fosterville, Castelmaine, Costerfield, Maldon and Wildwood. Emphasis will be placed on the identification of alteration zones surrounding the deposits and key geochemical and mineralogical indicators that can provide an indication of direction and distance towards mineralised structures. Participants will need to bring a laptop computer with them and download a trial version of ioGAS geochemical assessment software immediately before the workshop (trial version is time-limited and restricted to one installation per computer). A series of presentations introducing concepts and data sets will be interspersed with hands-on interpretation of integrated drill hole and surface rock chip data sets containing geochemical and mineralogical (quantitative XRD, hyperspectral, field staining) data from various central Victorian goldfields. A brief introduction to exploratory data analysis (EDA) using ioGAS will be provided. 

Dennis has been involved in the study of both primary and secondary alteration surrounding central Victorian gold deposits since the 1990s when he worked with staff and students at the then University of Ballarat to undertake orientation surveys using drill holes through mineralised faults at a number of deposits. This work culminated in an industry-funded AMIRA International project on the alteration and geochronology of central Victorian goldfields. The next phase of research occurred during the late 2000s when Dennis was employed as a Senior Geochemist by the Geological Survey of Victoria with the Gold Undercover initiative. This work involved systematic sampling of drill core and outcrop to define lithogeochemical and hyperspectral vectors towards gold mineralisation, and resulted in the production of several reports and public data sets. Both projects will provide material for this workshop.

Venue information and registration information will soon be available through the AIG web site.