Cannington Ag-Zn-Pb Data Package

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. \nLineage: 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. \nChemical 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.\nDensity 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.\nMagnetic 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. \nRemanent 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.\nConductivity 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. \nRadiometric measurements were conducted with a Radiation Solutions RS-332 Radiometer.\nGeochemistry 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.\nHyperspectral 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. \n\nFor full details of analytical procedures, see Cloncurry METAL Report 1 available from the CSIRO Publications repository.

本数据集基于取自澳大利亚昆士兰州坎宁顿矿（Cannington Mine）的样本采集得到，涵盖地球化学、矿物学与岩石物理三类数据。地球化学数据以元素分布图及红绿蓝（RGB）合成图形式呈现，用于展示三种元素的空间分布特征。矿物学数据为自动化矿物学分析得到的分布图，基于定制化数据库进行分类，以分布图及矿物模态百分含量形式呈现；同时提供光谱活性矿物含量的矿物学估算结果，以及采用便携式X射线荧光光谱仪（XRF）测得的样本地球化学数据。岩石物理数据涵盖磁化率各向异性、体积磁化率、剩余磁化强度、电导率、放射性测量结果及密度数据。所有岩石物理与矿物学测量均采用相同规格的岩心样本：直径25 mm、长度30 mm。

数据集溯源：
自动化矿物学分析：采用搭载3台EDAX能量色散X射线探测器的TESCAN Mira扫描电镜完成数据采集；矿物相识别基于本项目定制的数据库，使用TESCAN Integrated Mineral Analyser软件完成。
地球化学分布图：于澳大利亚珀斯使用Maia Mapper仪器采集X射线荧光显微成像数据；采用GeoPIXE软件，以闪锌矿为基质假设进行数据处理，最终导出单元素浓度分布图或三种元素的红绿蓝合成分布图；文件名按照红-绿-蓝的顺序标注图中所使用的三种元素。
密度计算基于梅特勒托利多MS204TS分析天平测得的质量数据：通过样本在空气与蒸馏水中的称重差值计算得到密度值。
磁化率测量采用Agico MFK1-A型卡帕桥磁化率仪完成；体积磁化率测量时设置磁场强度为200 A/m，以最大化传感器的动态量程。
剩余磁化强度测量采用AGICO JR-6型旋转磁力仪完成；样本取自定向钻探岩心，通过岩心上的定向标记将测量方位转换为地理坐标系。
电导率测量采用KT-20型手持式磁化率与电导率仪完成，设置测试频率为100 kHz，最低检测灵敏度可达0.1 S/m。
放射性测量采用Radiation Solutions RS-332型辐射计完成。
地球化学测量采用奥林巴斯Vanta便携式XRF完成，测试位点与自动化矿物学分析的样本表面一致；测试采用50 kV铑靶X射线管，GeoChem模式下搭配硅漂移探测器进行数据采集。
可见光近红外-短波红外（VNIR-SWIR）高光谱数据采用Analytical Spectral Device Fieldspec4光谱仪采集；数据以原始吸收值形式呈现，并通过"The Spectral Geologist"软件的Spectral Assistant功能估算矿物含量。

如需了解分析流程的完整细节，请参阅澳大利亚联邦科学与工业研究组织（CSIRO）出版物库中收录的《Cloncurry METAL Report 1》。