Fine Gravity Gold
Here are images of gold ores rich in sulfides including arsenopyrite. Some of the ore types in these photos: https://en.wikipedia.org/wiki/Breccia https://en.wikipedia.org/wiki/Hornfels http://www.merriam-webster.com/dictionary/intrusion https://en.wikipedia.org/wiki/Limestone https://en.wikipedia.org/wiki/Volcanogenic_massive_sulfide_ore_deposit http://tinyurl.com/qcazwv8
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 […]
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, […]
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 […]
Mineralization of Greenstone and Mesothermal Deposits
What does a Greenstone/Mesothermal shear zone hosted Mineralization deposit look like? Well they usually comprise one or more steeply dipping quartz or carbonate rich veins, as you can see in the pictures these sometimes forms veins or even stock works of narrow vein. Mineralization is regularly distributed in the vein often forming steeply plunging high grade. […]
Silver & Gold Cyanide Leaching of Copper Ore
Much work has been done on the effect of copper in cyanide solutions on the leaching of gold. It is generally accepted that copper in cyanide solutions can form complex ions such as Cu(CN)2-, Cu(CN)3=, and Cu(CN)4=-, although Cu(CN)3= is considered the most probable of these. According to leach scientists, the complex having an empirical formula […]
Gold Smelting at Home
In smelting and melting for pure gold, that is, gold of 24-kt. value is very much too soft for jewelry purposes and it is therefore always alloyed with other metals to increase its hardness and resistance to wear. For the same reason pure silver is seldom used alone but is alloyed with copper, the standard […]
Gold & Copper Bioleaching
Bacterial Leaching of Copper Ores Several types of bacteria capable of living in an acid environment have been isolated from copper mine waters. The foremost of these are of the genus Thiobacillus (T.). Thiobacillus bacteria are acidophilic aerobic chemolithotrophs which grow most rapidly at a pH in the range of 2-3. T. ferrooxidans derive their […]
Activated Carbon Column
Here is a set carbon column that are obviously designed for the carbon in column process 4′ dia. X 11.5′ tall Columns 6′ dia. X 2′ deep upper tanks with 8″ dia. drain Columns offset by 2′ Platforms with railings and connecting stairs