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Gold Prospecting
Hard Rock Gold Prospecting
Welcome stranger, wldn't believe it etc nuggets y are they not in reef
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<blockquote data-quote="user 4386" data-source="post: 590683" data-attributes="member: 4386"><p>The average size of gold deposits that are mined commercially are hundreds to thousands of metres long, many metres wide, and have around 5 to 9 grams of gold per tonne of rock (so you need 4 to 6 tonnes of rock to get one ounce). That is a big lump of rock (2.5 to 4 cubic metres). They usually consist of a network of small veins, and quartz is not always important but usually present, often with some sulphide minerals like pyrite and arsenopyrite. Low grade mines with ore bodies tens of metres wide can work down to about 1 gram per cubic metre (so you need 30 cubic metres for an ounce. more than a cube of sides 3 m).</p><p></p><p>Narrow (e.g. tens of cm), high grade (e.g. 1-3 oz/T) single quartz veins are mined in some mines - few mines of this type are large producers (for companies). Individuals and small companies and syndicates make money out of some of these, but most of them involve more than one vein of that type.</p></blockquote><p></p>
[QUOTE="user 4386, post: 590683, member: 4386"] The average size of gold deposits that are mined commercially are hundreds to thousands of metres long, many metres wide, and have around 5 to 9 grams of gold per tonne of rock (so you need 4 to 6 tonnes of rock to get one ounce). That is a big lump of rock (2.5 to 4 cubic metres). They usually consist of a network of small veins, and quartz is not always important but usually present, often with some sulphide minerals like pyrite and arsenopyrite. Low grade mines with ore bodies tens of metres wide can work down to about 1 gram per cubic metre (so you need 30 cubic metres for an ounce. more than a cube of sides 3 m). Narrow (e.g. tens of cm), high grade (e.g. 1-3 oz/T) single quartz veins are mined in some mines - few mines of this type are large producers (for companies). Individuals and small companies and syndicates make money out of some of these, but most of them involve more than one vein of that type. [/QUOTE]
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Gold Prospecting
Hard Rock Gold Prospecting
Welcome stranger, wldn't believe it etc nuggets y are they not in reef
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