Corralling Those Pesky Platinum Group Metals
June 2005 by Charles L. ButlerSome assay beads disappear, collapse, hide under the surface, or spread out flat while being cupelled, just as the last tiny bit of liquid litharge is driven off. This is especially true of platinum, iridium and osmium, when attempting to re-bead the filtered residue from a parted bead.
Lightning Creek is one of the famous placer gold streams in the Cariboo district of east-central British Columbia, Canada. It is 445 miles, by highway, north of Vancouver, some 50 miles east of the town of Quesnel (pop. 8,500).
The Guyana Highlands referred to here are a tropical upland area that extends from French Guiana on the east to Colombia on the west, with elevations reaching 9,219 feet. It occupies a vast and remote region between the Orinoco River on the north and the Amazon River on the south. There are mountains, tablelands, mesas, and swamps, largely impassable to those on foot.
...I decided to excavate the semi-frozen high-bank that was resting on a soft shale bedrock footing. Within three feet, I encountered an intrusive!
Mr. Hughes was obviously shaken by our interaction and we are quite confident he assumed we were all missing teeth, long-haired, uneducated, backwoods miners who would immediately become submissive. That didn’t happen...
The Piedmont region of the eastern United States extends for over 800 miles, from Alabama northeast to Pennsylvania. It includes the rolling country between the flat coastal plain to the east and the Blue Ridge Mountains to the west.
A recent weekend trip found us leaving the Grass Valley, California area to meet up with some friends in Downieville.
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