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Oil Seeps in Northern California
July 2001 by Edgar B. Heylmun, PhD
Indians used asphalt from oil seeps in California for caulking boats and other objects long before the white man arrived. Spaniards noted seeps as early as 1542, and the Portola expedition in 1769 used oil for wagon axles and as a fuel. Spaniards also used crude stills for obtaining lamp oil for use in the missions.Fountain of Youth Gold
Across and downstream of our operation was a large pile of huge boulders. It was logical to think that water forces may have deposited gold in and around these boulders. We moved our dredge over and started pulling the rock pile apart.
Ask the Experts
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?
Journeys in the Kingman Quadrangle—Part III
The sun is teasing the horizon in the heart of the Mojave. Soon, the exciting nightlife will end as the lizards and desert rats return to their homes.
The Search Continues
The Wyoming State Geological Survey continues research on diamonds in the Laramie Mountains northeast of the UW campus.
Melman on Gold & Silver
The only phrase that comes to mind in reviewing this past month is "deja vu." We've seen all this before; falling gold prices, rising stock markets, soaring hi-tech stocks, crazy initial public offerings (IPO's) and a return to public confidence that all problems can be solved.
The Heavy Minerals in Your Concentrates
The fact that mineral deposits can contribute specific types of heavy minerals is why the analysis of the heavy mineral concentrates in the streams of an area can be an important prospecting technique for finding undiscovered mineral deposits.
Feds Move Oil Shale to Front Burner
A recent hearing on federal plans to unlock oil shale reserves in the Intermountain West was packed by small-time speculators, some of whom questioned whether today’s technology would let them squeeze oil out of rock profitably.
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