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Gold Prospecting
Metal Detecting for Gold
Do puddlers provide useful information for gold detecting (probably not)?
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<blockquote data-quote="user 4386" data-source="post: 651591" data-attributes="member: 4386"><p>I agree completely on these points but felt that I did not want to obscure the main point I was making with too much detail. Washdirt was commonly quite rich so transport was not necessarily always an issue.</p><p></p><p>"Stories from individual mining centers told of fabulous riches during this period of placer mining (Hughes and Phillips, 2001). The 3 km stretch of Forest Creek and its tributaries at Castlemaine produced 80 t of gold in the first 10 years, peaking at 3 t of gold per week. Nearby at Donkey Gully, it is claimed a tonne of nuggets was picked from the surface. There are several reports from other locations of nuggets lying on the ground “like potatoes,” or of prospectors using shovels to turn over the gravel and pick out the nuggets. At Ballarat, a 3 × 3 m placer claim yielded a total of 430 kg of gold. Even 55 years after the initial rush, at Poseidon near Tarnagulla, a single 25-m claim yielded five 10 to 30 kg nuggets, and an additional 100 kg of finer gold. Nuggets of many kilograms are still found (e.g., the 23 kg Hand of Faith found at Wedderburn in 1980)."</p><p>Typical average grades are more relevant to what we are discussing but were also high "Typical grades of the larger Victorian placers ranged from 5 to 40 g/m3, averaging approximately 10 g/m3 (Canavan, 1988)" A miner needed about an ounce per week "to get by", so needed to treat less than a cubic metre up to 6 cubic metres per week, typically 3 cubic metres.</p></blockquote><p></p>
[QUOTE="user 4386, post: 651591, member: 4386"] I agree completely on these points but felt that I did not want to obscure the main point I was making with too much detail. Washdirt was commonly quite rich so transport was not necessarily always an issue. "Stories from individual mining centers told of fabulous riches during this period of placer mining (Hughes and Phillips, 2001). The 3 km stretch of Forest Creek and its tributaries at Castlemaine produced 80 t of gold in the first 10 years, peaking at 3 t of gold per week. Nearby at Donkey Gully, it is claimed a tonne of nuggets was picked from the surface. There are several reports from other locations of nuggets lying on the ground “like potatoes,” or of prospectors using shovels to turn over the gravel and pick out the nuggets. At Ballarat, a 3 × 3 m placer claim yielded a total of 430 kg of gold. Even 55 years after the initial rush, at Poseidon near Tarnagulla, a single 25-m claim yielded five 10 to 30 kg nuggets, and an additional 100 kg of finer gold. Nuggets of many kilograms are still found (e.g., the 23 kg Hand of Faith found at Wedderburn in 1980)." Typical average grades are more relevant to what we are discussing but were also high "Typical grades of the larger Victorian placers ranged from 5 to 40 g/m3, averaging approximately 10 g/m3 (Canavan, 1988)" A miner needed about an ounce per week "to get by", so needed to treat less than a cubic metre up to 6 cubic metres per week, typically 3 cubic metres. [/QUOTE]
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Gold Prospecting
Metal Detecting for Gold
Do puddlers provide useful information for gold detecting (probably not)?
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