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# how to identify gold ore

Question:$5 dollar gold coin Answers:The best advice available here is to check the link below for a coin dealer specializing in US gold. Question:How many cubic centimeters of ore containing 0.22% by mass gold must be processed to obtain$100 worth of gold? The density of the ore is 8.0 g/cm and the price of gold is $418 per troy ounce. (14.6 troy oz. = 1.0 ordinary pound called an avoirdupois pound, and 1 lb = 454 g.) (a) 42 cm (b) 2.7 x 10^4 cm (c) 4.20 x 10 cm (d) 6200 cm (e) 9.3 x 10^-1 cm Answers:C is the answer (4.20 x 10 cm ) First determine how many grams of gold is equivalent to$100. You will need to converting troy ounce to grams. 1 troy ounce is exactly 31.1034768 grams http://en.wikipedia.org/wiki/Troy_ounce ($418.00 /toz) * (1 toz / 31.1035 grams) =$13.44/gram Then ($100) / ($13.44/gram) = 7.44 grams of gold to get $100 The the ore is just 0.22% Au, So divide grams of gold needed by this to get grams of ore needed. (7.44 grams of gold) / (0.0022) = 3382.29 grams of ore needed Finally, multibly by the density to get cm needed: (3382.29 grams of ore) / (8.0 g/ cm ) = 422 cm of ore From Youtube FINDING GOLD II - Concentrating Gold :www.treasuresites.com Location guides & tools. How to find and process your own gold and platinum! Click "More From This User" to get all the films. Gold and platinum are 15-19 times heavier than other streambed materials and concentrate in low pressure areas and cracks that run across rivers and streams. You look for a crack on the bank, and follow it out until you meet the "gold line" and there you suck it out with your dredge. Gold will be on the outside edge of a river gravel bar, at the head of the bar (large gold but usually beneath big boulders), and at the tail end of a bar (vast concentrations due to river bars forming in the shape of an airfoil and sucking fine gold to the tail end) but be small to microscopic at the tail end. Gold will travel down a river or stream in a line, usually off center of the high pressure water. Gold will settle behind a boulder. A good place to fish, can also be an excellent place to find gold. "Black sand" is iron ore that can be readilly identified in gravel bars and is a ready indicator that gold is probably present. The most effective and economical way for the average person to find paying concentrations of gold in a river or stream is with a simple ($80) sluice that you shovel into and the riffles retain gold, platinum, gems and anything heavy for you. Gold can be found up high on the old river channels and recovered with metal detectors, a gold wheel, a highbanker, or simply by identifying the material, shoveling it in your ...