Cannington Ag-Zn-Pb Data Package

Full description

Chemical, mineralogical and petrophysical data collected using samples taken from Cannington Mine, Queensland, Australia. Chemical data are presented as element maps and red-green-blue composites showing spatial variations in three elements. Mineralogical data are automated mineralogy derived maps classified using a bespoke library shown as maps and modal abundances. Mineralogical estimates for abundance of spectrally active minerals are given as well as sample chemistry measured with portable XRF. Petrophysical data include anisotropy of magnetic susceptibility, bulk susceptibility, remanence, conductivity, radiometrics and density. Petrophysical and mineralogical measurements are carried out on the same 25 mm diameter 30 mm long core samples.
Lineage: Automated Mineralogy: Collected on a TESCAN Mira with 3 EDAX energy dispersive X-ray detectors. Minerals were indexed against a bespoke database built for this project using the TESCAN Integrated Mineral Analyser software.
Chemical Maps: X-ray fluorescence Microscopy maps collected using the Maia Mapper instrument in Perth, Australia. Data were processed assuming a sphalerite matrix using the GeoPIXE software and exported as single element concentration maps or red-green-blue composite maps of 3 different elements. Filenames show the 3 elements in the maps in order Red-Green-Blue.
Density calculations were made based on mass measurements made using a Mettler Toledo MS204TS analytical balance using the difference between samples weighed in air and in distilled water.
Magnetic susceptibility measurements were made using an Agico MFK1-A Kappabridge magnetometer. Bulk susceptibility measurements were taken with the field strength set at 200 A/m to maximise the dynamic range of the sensor.
Remanent magnetisation measurements were made using an AGICO JR-6 spinner magnetometer. Orientations were transformed to geographical co-ordinates using orientation marks on the core samples subsampled from oriented drill core.
Conductivity was measured using a KT-20 Handheld Susceptibility and Conductivity Meter set to 100 kHz, providing a sensitivity as low as 0.1 S/m.
Radiometric measurements were conducted with a Radiation Solutions RS-332 Radiometer.
Geochemistry is measured of the same surface of the sample that is used for automated mineralogy using a Olympus Vanta portable XRF. Measurements use a 50 kV Rh rube and silicon drift detector in GeoChem mode.
Hyperspectral data recorded as VNIR-SWIR was collected using an Analytical Spectral Device Fieldspec4 spectrometer. Data are presented as raw absorption values and estimates of mineralogical abundance using The Spectral Geologist, The Spectral Assistant function.

For full details of analytical procedures, see Cloncurry METAL Report 1 available from the CSIRO Publications repository.