Geophysics, Economic Geology, and Geoscience conference presentations.
Workshop and conference presentations from AEGC, AMA, ASEG, BCGS, DMEC, GB&WC, GSN, SEG, SGS, SKGS; plus in-house videos and interviews
------------- A side project of Condor Consulting Inc., Lakewood, Colorado. www.condorconsult.com
Condor provides a full range of services for processing, modeling and analysis of geophysical data. Condor specializes in inversion, offers full geological assessments as part of interpretive services, are experts in all aspects of airborne geophysics, and works with clients to integrate all geoscience data into a coherent project dataset. ------------- RU-vid channel updated and maintained by Robert Charnock- robertdcharnock@gmail.com
The San Manuel deposit was detected with expanding Wenner-array IP/R (and 1-D horizontal layered earth interpretation) at a depth of 330 metres back in 1948 (Siegel, 1971). That was 70 years ago! The mine was operated during 1952-1999 and became the 700Mt largest underground copper mine during the 1980s with BHP-Billiton operation. We should never forget what methods worked in the past.
Highlights: ✦Geochemical data sets are becoming the new geophysics in exploration, as new techniques and thinking are needed to locate small targets in complicated basement geology. •Geochemical data sets are becoming the new geophysics in exploration. •New techniques and thinking are needed to locate small targets in complicated basement geology. •The challenge is to locate small targets in complicated basement geology overlain by complicated stratigraphy, weathering, and regolith. • Sheet-washed gravels can hide the underlying geology through them. ✦Lithology, metamorphism, metasomatism, and structure all influence the petrophysical response of rocks. •Sensing hardware and technology evolution have an impact on geophysics. •The anatomy of a mineral system includes lithology, metamorphism, metasomatism, and structure. •Interfacing geochemistry and mineralogy with petrophysics is key. •Teasing apart geophysical data sets to tell us separately about each component is useful. ✦Geochemical techniques become limited in undercover exploration due to the thickness of the cover, but large geochemical databases can help map out new aspects of the system. •Hydro GaN techniques are too broad and not fine-scale for thick covers. •Limited techniques available for exploration once into those environments. •Large geochemical databases in brownfield environments can help map out new aspects of the system. •Example of a large geochemical database at the Ranger mine site helped map out architecture related to fluid flow and mineralization. ✦Geochemical prospecting has not evolved much from the 1850s and we haven't taken advantage of where technology has gone. •The cost of routinely collecting geochemical information is around $50-$110. •Despite advancements in technology, geochemical prospecting has remained similar to 1850 methods. •There is a need for more innovation and use of technology in geochemical prospecting. ✦Portable XRD and XRF systems are new technologies that can measure mineralogy, but processing the data is a challenge. •Portable XRD system is a game changer for measuring mineralogy. •Processing algorithms are outdated for the new hardware capabilities. •The challenge is to process and present the data to exploration geologists beyond just wiggly lines. •The development of efforts in deep exploration technologies is focused on these new technologies. ✦Geochemistry and geophysics datasets need to be seamlessly put together in order to better constrain the kinds of inversions. •Visualizing datasets together can drive a whole conversation around what it really means. •Routine geochemistry can lead to fancy analytics to better understand the probability of finding gold. •Producing a probability shell requires taking into account various criteria such as structure, alteration, mineralogy, and multi-element geochemical signal. ✦The relationship between geochemistry and petrophysics in rock exploration •Geochemistry and mineralogy are recorded as point data with limited sphere of influence •Downhole petrophysics samples a bigger volume and still has an edge in rock exploration •The goal is to use geophysics to extrapolate geochemistry and mineralogy to a broader volume •The question is what aspects of petrophysics measurement are still needed if mineralogy and geochemistry can be fully characterized. ✦Geochemical techniques should be used in combination to get the right answers, and data density is important for effective exploration. •The combination of geochemical techniques can provide the right answers for different projects. •The use of drilling is still necessary despite advancements in exploration technology. •Data density is critical for effective exploration, and regional soil surveys can reveal areas where more samples should be taken.
One of the main challenges for petrophysics is to measure the volume percentage of pyrite or other iron sulphides, as these are often the source of the principal density, chargeability, conductivity and sometimes magnetic (e.g. pyrrhotite) responses. The geologists focus exclusively on the other metal sulphides, Cu, Pb, Zn etc.
I can do Mineral Detection and am the best at it that I know of. I have done over 300 blind tests in mineral detection and passed all of them! I also find water and tunnels, etc. I can selectively detect all of the minerals on the chart and identify them and I can penetrate the ground very deep doing identification of minerals. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ROvmsjC2Qio.html
I can do Mineral Detection and am the best at it that I know of. I have done over 300 blind tests in mineral detection and passed all of them! I also find water and tunnels, etc. I can selectively detect all of the minerals on the chart and identify them and I can penetrate the ground very deep doing identification of minerals. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ROvmsjC2Qio.html
I can do Mineral Detection and am the best at it that I know of. I have done over 300 blind tests in mineral detection and passed all of them! I also find water and tunnels, etc. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ROvmsjC2Qio.html
I am working in my Master's Degree project in Advanced Product Design, in Sweden, and I am tackling exactly these exploration challenges. I am hoping to present a new vision, in the form of a robot, of mineral exploration soon.
ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-OoPy_e97rBo.html "... really when you look hard at them, they're transitional... the only really true alkalic one is Galore Creek, it's one of the weirdest deposits in the world. It has all the same alteration assemblages but what is missing, which nobody has ever looked at because it's up the hill, is the that serecitic flume, which has all the geochemistry that you find above a copper-moly system..." This quote is great. From section on "variability" in known deposits vs "The Model". Great to see mention of GEOCHEMISTRY. After seeing this video, my first thought was: "rock chips?"
Spectral and hyper-spectral satellite image analysis is a great new & effective way to explore for diamonds, gold, metals etc. minex.org/data/documents/190907Consultancy_MinEx_satellite_image_UAV_002.pdf
HI, How do i download the GRACE data for a regional groundwater source , please send me in my email gugulethu.l.sibanda@gmail.com on how to go about it .
It is absolutely exciting to see such advanced techniques applied in exploration and mining! I hope the mining companies adopt these techniques more frequently in their data analyses routine very soon!
Thank you for good presentation, I asking about the source of GRACE data from where I can get it ? I hope to give me a direct link for download GRACE data for any location on the coverage areas. please send me in my email abugola7@gmail.com
