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Gold Prospecting
Hard Rock Gold Prospecting
Pyrite in quartz vien
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<blockquote data-quote="user 4386" data-source="post: 486019" data-attributes="member: 4386"><p>Gold in pyrite is tricky. Firstly, you need to be sure that the pyrite is of the same age as the gold (a geologist can tell, but it is tricky for anyone else). Secondly, when gold does occur in pyrite and arsenopyrite, it can be extremely rich in some cases e.g more than 10 oz/tonne but so fine that if you dolly it, it can float on water simply because of the surface tension of water (less than one micron grain size). No easy answer, try dollying it - otherwise assay is the only way.</p></blockquote><p></p>
[QUOTE="user 4386, post: 486019, member: 4386"] Gold in pyrite is tricky. Firstly, you need to be sure that the pyrite is of the same age as the gold (a geologist can tell, but it is tricky for anyone else). Secondly, when gold does occur in pyrite and arsenopyrite, it can be extremely rich in some cases e.g more than 10 oz/tonne but so fine that if you dolly it, it can float on water simply because of the surface tension of water (less than one micron grain size). No easy answer, try dollying it - otherwise assay is the only way. [/QUOTE]
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Gold Prospecting
Hard Rock Gold Prospecting
Pyrite in quartz vien
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