Silver at Calico, California
April 2001 by Edgar B. Heylmun, PhDSilver was discovered in the mountains as early as 1875, but the first “official” discovery was in 1881.
Using a porcelain evaporating dish, place concentrates or head ore, equal to a tablespoon, in 60cc of aqua regia. Boil almost to dry, then add 10cc HCl (hydrochloric or muratic acid) and heat for a few minutes, and then add 30cc of water and bring to boil. Let cool while the solids are being allowed to settle. Using a pipette...
Platinum group metals (PGMs) have been noted at a few localities in Nevada, especially in Clark County. Unfortunately, some of these occurrences have been associated, in the past, with fraudulent schemes. The amount of PGMs found so far has not been enough for commercially important mining operations, but the mere fact that PGMs are present is worthy of note.
• Pacific Gold
• Barrick Gold
• Wheaton River Minerals
• Kinross Gold
• Canadian Arrow Mines
• Man turns in two gold bars...
• You'd better get used to the dark...
By the end of the day Sunday there were a lot of tired panners! By then they could have panned more than 14 times to make it to the end. This was not a picnic!
...two jadeite locations in California have been thoroughly researched by geologists. There are no doubt others that lie in wait.
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