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Gemstones, Minerals & Fossils
Gemstones and Minerals
rock with gold or copper ?
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<blockquote data-quote="HeadsUp" data-source="post: 16412" data-attributes="member: 414"><p>doesnt copper tarnish when exposed to air ? it goes a brown colour</p><p></p><p>gold wont tarnish</p><p></p><p>take it for an acid test at a jewellers</p><p></p><p>google search for "dolly pot" they are easy to make if you want to crush it up</p><p></p><p>wear safety glasses and a respirator to protect your lungs from silicosis from the airborne silica</p><p></p><p>if you crush it up try bending the gold coloured stuff to see if its malleable ( soft )</p><p></p><p>If its soft and bendy then do a specific gravity test by weighing some , then drop it into a graduated flask part filled with water to check its volume</p><p></p><p>weight / volume should equal around 19 grams per cubic centimetre if its gold</p></blockquote><p></p>
[QUOTE="HeadsUp, post: 16412, member: 414"] doesnt copper tarnish when exposed to air ? it goes a brown colour gold wont tarnish take it for an acid test at a jewellers google search for "dolly pot" they are easy to make if you want to crush it up wear safety glasses and a respirator to protect your lungs from silicosis from the airborne silica if you crush it up try bending the gold coloured stuff to see if its malleable ( soft ) If its soft and bendy then do a specific gravity test by weighing some , then drop it into a graduated flask part filled with water to check its volume weight / volume should equal around 19 grams per cubic centimetre if its gold [/QUOTE]
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Gemstones, Minerals & Fossils
Gemstones and Minerals
rock with gold or copper ?
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