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# how to identify gold ore

Question:i have access to what i believe is gold. my friends tell me it is fools gold. i have used muratic acid to test what i have found and i am not sure of the results. how can i tell the difference between fools gold and real gold?

Answers:A little history lesson first there was this King who wanted to know if his crown was real gold or false gold so asked one of the great scientist of the time to see if he could solve the problem. For some weird reason the scientist was wearing the crown while in the tub he noticed the water level raised more with one gold than the fools gold so he jumped out of the tub and yelled (Eureka) supposedly that's how that saying started as to what I remember. So, to answer your question gold is more dense than fools gold so real gold will cause the water level to rise more than fools gold.

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Answers:Classification: Magnetite A kind of iron oxide ore, the main ingredients are Fe3O4, and is the compounds of Fe2O3 and FeO, dark gray, the density about 5.15, with Fe72.4%, O 27.6%, and of magnetism, after a long period weathering it become hematite. Hematite Fe2O3, Is a kind of iron oxide ore, the main ingredients is Fe2O3, dark red, the density about 5.26, with Fe70%, O 30%, is the most important iron ore. Due to the its structural condition, it can be divided into many different categories, such as red hematite, SPEcularhematite, mica iron ore (Micaceous hematite), Red Ocher and so on. Limonite This is the ore containing ferric hydroxide. It is the common name of the two different structures of ore Goethite HFeO2 and LepidoCRocite FeO (OH), also the chemical formula of its main component was written as mFe2O3. nH2O, showing Khaki or brown color, containing Fe about 62%, 27% O,11% H2O , the density is about 3.6 to 4.0, mostly being attached to other iron ore. Siderite The carbonate of iron containing ore,its main ingredients is FeCO3, showing blue gray, with the density about 3.8. Most of this ore containing quite a lot of calcium and magnesium. Silicate Iron Such ore is a complex salt, there is no definite chemical formula, ingredients vary widely, usually with dark green, and the density about 3.8, very low iron content, is a poor iron ore. Iron sulfide This Kind of ore containing FeS2, with Fe only 46.6% while the content S reached 53.4%, appears sallow, the density about 4.95 ~ 5.10. Because this ore often contains many other precious metal such as Copper, Nickel , Zinc, Gold, Silver , so they are often used as raw materials for other metal smelting; also because it contains a large amount of sulfur, so is often used to distill the sulfur, thus rendered iron a by-product, and so it can not be classified as iron ore. Recommended Machinery: Spring Cone Crusher Impact Crusher Hammer Crusher Vertical Shaft Impact Crusher(FREE Sand making plant designing)

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 ...

Liquid Gold 2 - Filtering Vegetable for Fuel DVD Trailer :Please visit our website at www.goldenfuelsystems.com Learn the Do's and Don't's of Gathering and using Waste Vegetable oil as a fuel. Perfect for anyone who is currently using, or planning on using Vegetable oil or Bio Diesel as a fuel! These topics and more are discussed The legality of collecting waste vegetable oil and burning it as a fuel. Overview of how diesel engines burn waste vegetable oil as fuel. How to identify good waste vegetable oil. How to identify bad waste vegetable oil. How to ask a restaurant for their waste vegetable oil. How to fuel up on the fly with the automated One Shot Filtration Unit. How to setup your own waste vegetable oil accounts. How to collect large quantities of oil for later filtration at home. How to filter waste vegetable oil using filter bags. How does salt, sugar and animal fats affect waste vegetable oil for fuel? How to tell if there's water in the oil? How to filter the oil once it's been gathered. Cold Weather gathering techniques and tips.