Ive believe platinum is called white gold. I think its a little heaver then gold. I find small pieces Quite often. Which ive acid tested it and the test is positive. For platinum. And it looks like platinum to me. But i don"t have enought to send it out to be tested.For sure. It acts like gold in a pan. But pieces i find are fine like flour gold. And they have a silver color and a bluish tint. Find it panning in Maine.
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Northern kalif has plenty on almost all drainages but spotty. You find it in restrited areas as requires more force to move and almost always on bedrock as it heads straight to bedrock asap as free from host rocks. Almost all I've seen is pretty shiny but can be duller also. The PT group is huge and rhodium looks nasty like gossen,rotten iron but at about $5,000+ox (varies widely) it too can be one heck of a find. Think Mariposa county in particular for rh. John