Understanding High-grade Mineralization in the Khoemacau Zone 5 Cu-Ag Deposit, Kalahari Copperbelt, NW Botswana, using μXRF Techniques
نویسندگان
چکیده
The Zone 5 Cu-Ag deposit is the most consistently (for ～4.2 km) mineralized in Khoemacau district northwestern Botswana, with an underground mineable resource of ～100 Mt grading 2 % Cu and 21 g/t Ag. consists a redox-buffered metal-zoned ore body hosted preferentially by chemically reduced meta-sediments overlying oxidized hematite-bearing arkosic sandstone. Ore-grade mineralization typically variably deformed quartz-calcite veins, along metamorphic cleavage, bedding, shear fabric, folds. Geochemical assay data established during exploration indicates widespread signifi cant concentrations Ag, correlating positively Cu. In this study, we apply Bruker M4 TORNADO micro-X-ray fluorescence (μXRF) scanner for multi-element mapping selected highgrade drill core samples, particular focus on Ag partitioning. Collection μXRF was followed microscopic SEM-EDS observations to validate results. coupled petrographic results indicate: i) multi-elemental samples very eff ective can be applied as fi rst order geochemical analytical tool characterizing targeting important sections core, ii) silicification contributed cleavage formation, which later became trap site, iii) closely associated Fe. show that native silver stromeyerite part co-precipitated hematite post Cu-(Fe)-sulfi de deposition.
منابع مشابه
MODELLING THE As-Au ASSOCIATION IN HYDROTHERMAL GOLD MINERALIZATION: EXAMPLE OF ZARSHURAN DEPOSIT, NW IRAN
متن کامل
Investigation of mineralization and fluid inclusions of the Lapeh-Zanak copper deposit, Central Alborz zone, Iran
The Lapeh-Zanak copper deposit is located about 15 km east of Tehran, in the southern part of the Central Alborz Zone. The rock units exposed in this area include a sequence of volcanic and pyroclastic rocks (basalt, andesite, trachy-andesite and dacitic and vitric tuff) belonging to the Fajan Formation with the Paleocene-Lower Eocene age, which are cut by subvolcanic igneous masses with a comp...
متن کاملmodelling the as-au association in hydrothermal gold mineralization: example of zarshuran deposit, nw iran
0
متن کاملPrediction of mineral deposit model and identification of mineralization trend in depth using frequency domain of surface geochemical data in Dalli Cu-Au porphyry deposit
In this research work, the frequency domain (FD) of surface geochemical data was analyzed to decompose the complex geochemical patterns related to different depths of the mineral deposit. In order to predict the variation in mineralization in the depth and identify the deep geochemical anomalies and blind mineralization using the surface geochemical data for the Dalli Cu-Au porphyry deposit, a ...
متن کاملusing game theory techniques in self-organizing maps training
شبکه خود سازمانده پرکاربردترین شبکه عصبی برای انجام خوشه بندی و کوانتیزه نمودن برداری است. از زمان معرفی این شبکه تاکنون، از این روش در مسائل مختلف در حوزه های گوناگون استفاده و توسعه ها و بهبودهای متعددی برای آن ارائه شده است. شبکه خودسازمانده از تعدادی سلول برای تخمین تابع توزیع الگوهای ورودی در فضای چندبعدی استفاده می کند. احتمال وجود سلول مرده مشکلی اساسی در الگوریتم شبکه خودسازمانده به حسا...
ذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International journal of the Society of Materials Engineering for Resources
سال: 2022
ISSN: ['1347-9725', '1884-6629']
DOI: https://doi.org/10.5188/ijsmer.25.33