USING ALTERATION PATTERNS TO CHARACTERIZE GOLD MINERALIZATION AT MAGNETIC HINGE IN CHIRANO GOLD MINES LIMITED: APPLICATION OF ANALYTICAL SPECTRAL DEVICE

Matthew Coffie Wilson, Dinah Wankyimah Quaye, Kweku Ofori Agyemang and Daniel Apau
Additional contact information
Matthew Coffie Wilson: Kwame Nkrumah University of Science and Technology (KNUST), Department of Geological Engineering, Kumasi-Ghana
Dinah Wankyimah Quaye: Kwame Nkrumah University of Science and Technology (KNUST), Department of Geological Engineering, Kumasi-Ghana
Kweku Ofori Agyemang: AngloGold Ashanti, Obuasi-Ghana
Daniel Apau: Chirano Gold Mines Limited, Chirano-Ghana

Malaysian Journal of Geosciences (MJG), 2023, vol. 7, issue 2, 119-125

Abstract: The Magnetic Hinge deposits from Chirano Gold Mine lie within the Paleoproterozoic Birimian rocks of southwestern Ghana on the West Africa Craton. The Analytical Spectral Device (ASD) Terraspec Spectrometer is used to measure the composition and abundance of a variety of alteration minerals. The results obtained through the ASD on rock cores are plotted as strip logs plots, box plots and the creation of geological models using Leap Frog Geo. The different alterations identified using the ASD were sericite, chlorite, carbonate, amphibole, chlorite-amphibole, kaolinite and epidote. Cutoff grades lesser than 0.2 ppm were considered insignificant mineralization and hence were of no interest. The Magnetic Hinge boasts of carbonate, sericite, and sericite-chlorite alterations hosting good gold grades in rocks and this was observed from the results obtained. Moreover, Magnetic Hinge is a new project and reverse circulation was done to obtain information on the subsurface alterations, open pit mining may be done and as progress is made, diamond drilling can be done to obtain subsurface information for much deeper depth.

Keywords: Analytical Spectral Device; mineral alteration; core orientation; structural control; cutoff grade (search for similar items in EconPapers)
Date: 2023
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://myjgeosc.com/archives/2mjg2023/2mjg2023-119-125.pdf (application/pdf)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:zib:zbnmjg:v:7:y:2023:i:2:p:119-125

DOI: 10.26480/mjg.02.2023.119.125

Access Statistics for this article

Malaysian Journal of Geosciences (MJG) is currently edited by Dr. Rodeano Roslee

More articles in Malaysian Journal of Geosciences (MJG) from Zibeline International Publishing
Bibliographic data for series maintained by Zibeline International Publishing ( this e-mail address is bad, please contact ).