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Art of Alluvial Mining
Be prepared to step outside the square Power of Seven "Hi ho! Hi H! It's off to work we go" sang the first seven dwarfs who worked this mine. Meet the seven alluvial miners who braved Soul Food's Alluvial Mine and headed off with their Snow White (Heather Blakey) in search of creative gold and Eldorado. Barbara Banta More Miners More miners are welcome to stake claims in the old Alluvial Mine. Alluvial Mining Techniques Alluvial gold in the Mogo area was discovered in the old waterways and drainage systems and formed the basis upon which the goldrush was founded. After the earth was formed, cracks appeared in the rock as a result of several influences (temperature variations and contraction of the planet's surface). These cracks, or shears, caused a pressure release allowing quartz, in solution, to well up. Gold, silver and other elements entered into these shears with the quartz. It is believed that after the forming of the quartz reefs, the planet experienced periods of intense cold (the ice ages) and periods when, it is believed, the annual rainfall may have been up to 1000 inches a year. This caused massive amounts of erosion over a long period of time and the Mogo we know may well have been 100s of metres under the original surface of the earth. As the drainage systems formed during this period of erosion, the gold, liberated from the reefs, was washed down together with all the other rock matter. These drainage systems acted like giant sluices, by collecting the gold in all the cracks and crevices on the rocky bottoms of the waterways. Over the passage of time and up to the modern day, the earth has gradually changed and the old waterways have been, in places, completely buried, or partially covered, leaving only narrow creek beds. In the Mogo area these narrowed waterways were where the alluvial gold was found by the diggers. The gold that was easily found and panned, was the catalyst that brought the diggers to the Araluen fields. As the easily available gold was taken, the banks of the creeks were mined to expose the rest of the old drainage systems. The alluvial gold was, of course, fully liberated but buried in the silts, clays and light shales. These had to be separated. There was a variety of methods employed to achieve this, the most common of these being the sluice and the cradle. Both of these methods involved shovelling the alluvial ore onto the machine and dispersing the clays, etc. with water. The last small separation was achieved by panning. When diggers collected the gold that was too fine
to pan, they would use a method called "tinning". This involved
rubbing mercury in their pans to trap the gold (These two elements
have a chemical affinity and are attracted to each other). The digger
then placed his pan in the fire to "melt" the resulting amalgam,
which would then be placed in a hollowed out potato, wired together
and thrown in the fire. The spud would then be cooked until it was
black on the outside. At this point the mercury was absorbed by
the potato, leaving the pure gold inside. Preparation for Miners Here at The Soul Food Cafe we are mining for Creative Gold. This is not for the faint hearted any more than alluvial mining was easy work. Therefore, I strongly urge you to spend some time working here at the top of the mine before going deep within to use techniques like Active Imagination. These resources and activities will provide you with
exercises that you can complete in your visual journals before undertaking
heavier activities. The Destination
The Alluvial Mine is the property of Heather Blakey and Miners who have generously shared their work. Please do not replicate any part of this mine without written permission.
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