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Author Topic: density field chart for prospectors  (Read 66 times)

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Offline KenKlondike

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density field chart for prospectors
« on: Yesterday at 12:23:13 PM »
I put together a simple one pager field chart for doing specific gravity tests.

Can be handy when your in the field trying to figure out if its gold, Pyrite  or mica

Let me know if it needs more or has errors.

The document is located at:


Offline JOE S (INDY)

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Re: density field chart for prospectors
« Reply #1 on: Yesterday at 05:31:36 PM »
Ken, I have a few thoughts-

First - while the chart is helpful it doesn't address minerals - like Iron minerals (Hematite, Magnetite or Pyrite) as well as other minerals that some folks find in the pan.  Could be helpful.

Secondly - Karat Gold (22k, 12k , etc) listings in the chart do not take into account the alloying metals.  50% Au and 50% Al would be lighter than the same 12k of Au and Pt.  25% Au, 25% Cu and 50% Au would also be, by definition, 12k but would also have yet another SG. 

And finally - Fahrenheit for those of us who still think in the classic manner.

Great work there, and certainly well worth having in the field.

Wiser Mining Through Endless Personal Mistakes