How to Pan Gold
I told you I wanted to do a panning video. So what you’re going to do is, I’m going to break this down a little bit differently. I’m not going to get real scientific on this; I’m just going to put it in plain terminology. Now unfortunately we are probably going to listen to gunshots […]
Zinc Box Gold Precipitation
The simplest precipitation equipment for a small mine is what is known as a zinc-box (Fig. 150). This consists of a long, narrow, sloping, wood or painted sheet-iron box divided into wide compartments or cells which are separated by baffle-boards and narrow compartments. The bottom of the box slopes to one side to facilitate the […]
Mercury Amalgamation
Mercury or quicksilver fed into stamp mortar-boxes and riffles or applied to copper plates has been for ages the method of catching free gold. Many millions of ounces of gold have been saved thereby, and the mercury has been returned to circulation with small loss. Amalgamation is still practiced, but the recovery of gold by […]
Mining Tailings Pumps
The disposal of mill residues or tailings costs 2 to 6 cents pel ton, however carefully it is done. Residues may be moist sand which can be conveyed by belt or trucked to a dump, moist solid slime which can be handled somewhat similarly, or pulp which can be pumped to a suitable place. The […]
Magnetic Black Sand Separator
During the past 50 years or more there has been a great waste of money, energy, and time in devising, building, and trying many machines to recover gold and platinum, also gemstones, from black sand. Volumes have been written on the subject, and many inquiries have been made by prospectors and others who thought that […]
Cyanidation
As coarse gold is not dissolved by cyanide, it must be removed from an ore by one of the methods already described. Weak solutions of sodium cyanide (or potassium cyanide, seldom used) will dissolve the fine, untarnished gold and silver in ores and tailings, provided the latter have been ground fine enough and do not […]
Cheap Sluice Mat – Corduroy
Details of the use of corduroy are given in the section covering gold and silver, but there is no reason why this material should not be used by the small miner in the concentration of any sulphide ore—silver, mercury, copper, lead, antimony, and sphalerite, for example. Corduroy forms part of the concentrating equipment of the […]
Precipitation of Copper contained Silver leached out with Copper
Having refractory ore under treatment, it is generally the case that copper is also found in it. While roasting, the presence of copper is favorable for the chlorination of the silver, but copper ores require some more salt, especially if it is intended to save the copper also. The more chloride of copper formed, the […]
Gold Planning
I have been given the opportunity to maybe teach you guys how to pan some gold and find some gold. I’ve been prospecting, my family been prospecting for many years. So we have a good mine just up the road. And hopefully today we can go out and find a little bit of Gold and […]
Electromagnetic Separation of Wolframite
Wolframite, sp. gr. 7.1 to 7.5, tungstate of iron and manganese, is feebly magnetic; specimens from some localities are reported to be strongly magnetic. Wolframite frequently accompanies cassiterite in tin ores, and on account of their similar specific gravities (cassiterite 6.4 to 7.02) these minerals may not be separated from each other by specific-gravity methods. […]