Thirty diamond-core drillholes, through nearly 20 km of rock, were provided by BHP Billiton to represent an effective 14 km cross section of the Olympic Dam deposit. The cores were scanned with HyLogger™ 3-3 (including the Thermal Infrared) and the spectral data processed against spectral libraries to give interpreted mineralogy. Ancillary data including geochemistry, magnetic susceptibility and density downhole logs were provided by BHP Billiton. All data, including high resolution linescan core images, are available for download from the National Virtual Core Library via SARIG or the Auscope Portal.

The spectral results are presented in the form of the 2 or 3 most dominant minerals for every centimetre along the core – these are labelled Min1, Min2 and Min3. Mineral interpretations are available for each of three spectrometers on the HyLogger™ which record wavelengths in the visible, shortwave infrared, and thermal infrared - uTSAV, uTSAS and uTSAT respectively. Plots of groupings of similar minerals are also provided and designated Grp1, Grp2 and Grp3. Estimates of Errors and relative mineral proportions are included with the data (Error, Wt1-3 respectively).

View these drillholes in SARIG

Olympic Dam HyLogged Drillholes

Drillholes scanned with HyLogger™ showing the relative distribution of K feldspar in the cross section.

Drillholes included in this data release

Drillhole numberName Depth (m) Drillhole numberName Depth (m)
281146 RD16 480  281153 RD2151 844.3
281147 RD16W1 1318.9  281154 RD2153 886.3
281140 RD33 697.4  281155 RD2162 999
281135 RD49 703  281160 RD2326 747.8
281141 RD76 918.7  281161 RD2336 465.3
281142 RD252 889  281162 RD2347 535
281157 RD302 590.8  281163 RD2488 800
281158 RD451 889  281164 RD2499 840.5
281159 RD480 976.1  281156 RD2568 829.9
281148 RD1603 842.6  281165 RD2684 850
281149 RD1604 800  281138 RD2715 1011.8
281150 RD1605 800  281139 RD2751 1390.8
281151 RD1606 1000  281143 RD2773 2328.9
281137 RD1614 785.4  281144 RD2786A 2364.9
281152 RD2137 1295.4  281145 RD2923 600

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