SEDEX Sedimentary Exhalative Ore Deposits
Another submarine syngeneic sulphide deposits- the SEDimentary exhalative or SEDEX deposit. These are very familiar in genesis to the VMS deposits except they are not primarily driven by intrusions below but are instead products of dewatering and metamorphism of thick piles of accumulated sediments in ocean basins hence the “SED” part of the name, the “exhalative” portion of the name […]
Ring and Puck Mill Pulverizer for Sale
New Ring and Puck Mills and Pulverizer, a.k.a Vibratory Pulverizer, Ring and Puck Mill, Ring and Puck Pulverizer, Vibratory Mill, Vibratory Ring Mill, Vibratory Disc Mill are easily found if you got enough cash. Learn XRF sample prep method for best assay results. Brand Names like Bico, GyralGrinder, ROCKLABS, Angstrom, Essa (now FLSmidth) will cost you over $US 9,000 + delivery. Here are some […]
Laboratory Pulverizers
The use of a laboratory pulverizer is a must before sending any soil or test sample for XRF, titration, ICP or other assay method; you need to pulverize or fine grind a dry representative portion of the rock sample using what is commonly called in the laboratory language of sample preparation a laboratory pulverizer. Any […]
Epithermal Gold Deposits Exploration
Many of the techniques are similar to those, have described for other deposit types. We need to start by focusing our efforts in areas where there is evidence of major felsic to intermediate volcanism, as it’s this volcanism that drives the epithermal systems. We also needed to find an area that has not been too […]
High Sulphidation Epithermal Gold Deposits
High Sulphidation Epithermal Gold Deposits form in geothermal systems where hot acidic hydrothermal fluid directly from the intrusion, remains undiluted by ground water. Low sulfidation deposits on the other hand from a geothermal system in which the magmatic fluid is cooled and diluted by groundwater and the pH is neutralized at depth. The formation of […]
Porphyry Beer
Porphyry deposits and Beer having something in common. Porphyry ore deposit form in large intrusions that acted as magma chambers feeding active volcanoes. You will remember that as the magma chamber cools from the outside inwards, barium, feldspar and quartz crystalize out so that the remaining melts becomes enriched in metals and volatiles. The volatiles […]
Epithermal Gold Deposits Characteristics
A fascinating group and characteristic of Epithermal gold deposits is that you can virtually see them forming today, simply by visiting hot springs. Like those with Yellowstone in Wyoming or Rotorua in New Zealand. This photo is Pamukkale, low sulfidation hot springs in Turkey, with a beautiful white centre terraces. If you like hot springs, […]
Infographic: Lunar Gold Rush: How Moon Mining Could Work
Across history, human development has relied upon the finite resources available on Earth. But the moon – a seemingly barren rock – may actually be a treasure trove of rare resources vital to Earth’s future. And now, nations are looking upwards to a potential lunar gold rush… Why mine the moon? Geological surveys show […]
Is Gravity Gold Free Gold
Being able to recover gold using a gravity method or process does not mean that gold is free and fully/completely liberated. For example, using Automated Digital Imaging System (ADIS) for Gold Search (ADIS is an optical screening and imaging equipment package customized to locate gold occurrences in ground sample), a sub-sample of 8 samples representing 8 lithology for an […]
Copper – Lead Separation by Lead Depression
Another method to separate Pb from Cu is in depressing the lead away from the copper to float. Here, three batch cleaner tests were performed with additional depressants to reject more lead from the copper flotation concentrate. The baseline test utilized no MBS depression in the rougher circuit to maximize copper recovery, but MBS depression in the copper […]