The Boludo Placers, Sonora
November 2004 by Edgar B. Heylmun, PhDThe Boludo placers described here include gravels that have been listed under many different names, including Altar, Golden Triangle, Llanos del Oro, San Francisco, and Trincheras, among others. The placers are on desert flats at the northwest end of Sierra Santa Rosa, about 2,600 feet above sea level. It is in a region of northwest-trending mountain ranges separated by broad desert valleys.
With the high price of gold, there are many new prospectors out in the hills all over the United States, and while we would all prefer to be finding those larger nuggets, it doesn’t always work that way. Sometimes all that is available is nothing more than a few small flakes. The truth is, new prospectors are sprouting up all across the planet—especially in the developing nations.
The state of Washington, the smallest, in area, of the western states, is dominated by the north-trending Cascade Range. The highest peak in the Cascades, Mt. Rainier, reaches an elevation of 14,411 feet.
Q: Does anyone know of an electrowinning instrument that will plate (heavy plate) rhodium and iridium? I have both in solution. (Solution content = 262.9 oz/ton of iridium; 14.9 oz/ton rhodium.)
If I have precious metals in solution in bulk, say 620 to 1,000 gallons, is there a facility to extract the precious metals out? If so, can each be isolated?
In order to search for placer diamonds, the prospector needs to first become familiar with the commodity that he/she is looking for. Diamonds are extraordinary minerals with extreme hardness that have inherited beauty sought for personal adornment and...
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