Application of computer-based core logging to the Sustut copper deposit, north-central British Columbia

CIM Bulletin, Vol. 73, No. 824, 1980

D.H. WILTON, C.I. GODWIN and AJ. SINCLAIR, Department of Geological Sciences, The University of British Columbia, Vancouver, B.C.

A computer-based drill core logging system used to examine copper mineralization hosted in volcaniclastic rocks at the Sustut deposit, in north-central British Columbia, has many advantages over conventional logging. A relatively simple format for recording geological information allows complex, but significant, geologic parameters to be recorded consistently, accurately and quickly. This allows graphical presentations and statistical interpretation of the data that lead to rapid and detailed analyses of the control and distribution of copper mineralization at the Sustut deposit.Ore mineralization is concentrated in lens-shaped bodies and is zoned from native copper cores through chalcocite, bor-nite and chalcopyrite to a margin containing pyrite. Chalcocite, the principal mineral, occurs mainly in volcaniclastic agglomerate characterized by a specific grain size, a narrow range of matrix and fragment proportions, and a specific sorting.

Mots Clés: Ore deposits, Computers, Core logging, Sustut deposit, Copper deposits, Volcaniclastic rocks, Logs.