gold in quartz rock - specimen ore crushing

gold in quartz rock - specimen ore crushing

One way that gold prospectors look for gold is too try and locate its source, the place where to gold forms in the earth. In epithermal gold deposits, it is quite common for sizable gold veins to run through quartz rock, and these specimens can be located using a quality metal detector.

Often these gold in quartz specimens are very beautiful and interesting, causing them to be highly valued by mineral collectors, sometimes even more than the value of the gold itself. With specimen-grade gold such as this, it is recommended that the gold miner seek out collectors that will pay a premium for them rather than crushing these mineral specimens.

The fact is that gold is rare. Even low-grade gold ore that has only small amounts of visible gold present is still extremely rare. Yet people are constantly finding different types of shiny rocks and hoping that they have found the real-deal.

Differentiating real gold from the huge variety of fools gold out there is a different discussion, but suffice it to say that I would be very rich if I had a dollar for every person who has showed me a shiny rock and asked if it is gold or not.

Any type of quartz or rock that has visible gold veins in it should be considered high-grade. If you located a source of this material using a metal detector or other mining method, be sure to give it the attention that it deserves. There could potentially be many ounces of gold in the vicinity.

There is a difference between high-grade and specimen grade gold. Specimen grade would be those pieces that we discussed earlier that have a higher value to collectors. However, there are many high-grade ores that are not all that attractive and will not command a high price to a mineral collector, but are still very rich. These ores should be crushed to release the gold from the rock.

There are many commercial grade rock crushers that are available and are used at mining operations all around the world to efficiently process lode gold deposits and release the free-milling gold within them.

For small pieces of quartz that contain visible gold, a simple hand operated crusher will do just fine. Many miners call these dolly pots and they are simply a mortar/pestle made from steel that you can put small ore samples into and crush up.

Put the pieces of gold in quartz inside the dolly pot and start busting it up. Keep at it until youve broken down the material into a fine powder. The finer the material, the more efficient your gold recovery will be.

Continue crushing until you are left with just fine material. Assuming the specimens that you are crushing actually contain some gold, there is fine gold within all that quartz. All you have to do is separate it out.

Now is when you will find out if your shiny rocks actually contain gold or not. If that shiny stuff is actually mica, chalcopyrite, or some other light mineral, you will lose it in the panning process. If you have gold, and you do your gold panning properly, you will be left with just the gold.

Again, it should be noted that the nice collectable pieces of gold in quartz should not be crushed. Even if it isnt loaded with gold, if the gold displays nicely in an exposed vein running through the quartz then it may very well be worth more as-is.

Still, most gold ores should be crushed to realize the highest values. Even many pieces that have visible gold are not all that attractive, and wont bring much money to a collector. Gold is often associated with dirty quartz that has a lot of iron staining and is also not very attractive.

how to test a rock for gold | sciencing

how to test a rock for gold | sciencing

Gold feels heavy, like a lead fishing weight, when you hold a placer nugget in the palm of your hand. However, weight alone is not enough to identify real gold in a rock. As an amateur, you can test a rock for gold in several ways.

Many people confuse iron pyrite fools gold with real gold. Simple field tests can help you identify whether you have found real gold. Fools gold scratches glass whereas real gold does not. Iron pyrite is attracted to magnets, but real gold is not magnetic. Real gold also leaves a gold streak when scratched against a small bit of unglazed ceramic, like the back of a piece of bathroom tile, but iron pyrite leaves a greenish-black colored streak. In your gold hunting kit, a small magnet, piece of glass and a bit of unglazed tile can help you identify real gold in a flash.

Placer also called nugget gold is typically found by panning creeks, streams and rivers. If you hunt with a metal detector, you can find gold in dry stream beds. Some metal detectors have a feature that allows you to narrow the signal so that it only responds to gold, which helps when hunting in dry creek beds. In the pan, gold stays near the bottom or along the edge of a ridge because it is heavier than other rocks. It is malleable, which means it can be dented, and it has a brassy yellow color. This type of gold may even have quartz or other mineral material still attached to it.

California miners in the 1840s used sluice boxes to siphon gold from sand or crushed rock, and hobbyist gold miners use the same process today. Pulverize the rock by crushing it with a heavy mallet first, making certain to contain the bits. Put the material at the top of a sluice box and add water to push the rock down the slightly angled ridged slide. Gold typically collects within the ridges. Another option is to pan the pulverized rock to remove the rock from the pan and leave the gold.

Take a rock that contains gold in it this process works best on quartz rocks and set it inside a glass jar. Add white cooking vinegar to the jar, covering the entire rock and then some with the vinegar. The acid-based vinegar slowly dissolves the quartz crystals surrounding the gold, leaving only bits of quartz attached to the gold. Other more potent acids, such as those used in industrial settings, may work faster, but they require care and extreme safety measures when in use.

Before you stake a claim on a spot where youve found a possible gold mine, take a mineral sample to an assayer. Assayers analyze the entire metallurgical content of the rock, which can help you determine whether to file a gold claim on the location. Keep in mind that many rocks contain gold just not enough to cover the cost of extracting it. The amount of gold per pound of rock indicates the value of the claim.

As a journalist and editor for several years, Laurie Brenner has covered many topics in her writings, but science is one of her first loves. Her stint as Manager of the California State Mining and Mineral Museum in California's gold country served to deepen her interest in science which she now fulfills by writing for online science websites. Brenner is also a published sci-fi author. She graduated from San Diego's Coleman College in 1972.

how to use bleach on gold ore to remove gold | sciencing

how to use bleach on gold ore to remove gold | sciencing

Gold is an almost non-reactive metal, but halogens chlorine, bromine, fluorine and iodine can dissolve it. Chlorine is the cheapest and lightest product that can achieve this. Bleach is the chemical compound sodium hypochlorite. When combined with hydrochloric acid, the mixture produces chlorine that dissolves gold from gold ore. This was the first commercial method used for gold extraction.

Add the 35-percent hydrochloric acid to the sodium hypochlorite bleach into a flask or beaker, in a two-to-one ratio of acid to bleach. Ensure that the liquid mixture is at least six times the volume of the ore grains. Wear a face mask and avoid breathing the chlorine fumes the reaction produces.

Pour the acid-and-bleach mixture into the plastic bowl with the ore grains and stir. Allow four hours for the gold to dissolve, stirring every 20 minutes. The chlorine reacts with the gold inside the ore to form gold chloride. Filter the ore and bleach solution to remove all the impurities, such as soil and rock fragments. Collect the filtered gold chloride solution in a flask.

Place powdered sodium metabisulfate in another flask and dissolve with water. This forms a solution of sodium bisulfate. Add the sodium bisulfate solution to the gold chloride solution. Leave it to settle for four hours.

Observe the brown powder at the bottom of the flask. This is the gold that has precipitated out of the solution. Pour off the solution. Place the flask with the wet gold powder on the stove and evaporate the water, leaving the gold powder at the bottom.

Collect the powder into a crucible or melting dish. Apply heat with an oxy-butane torch from the side of the dish toward the center, so that the powder melts at 1,947 degrees Fahrenheit. Remove the heat when the gold has melted completely and allow it to cool. Once cooled, the gold is ready for fashioning into ornaments.

Based in London, Maria Kielmas worked in earthquake engineering and international petroleum exploration before entering journalism in 1986. She has written for the "Financial Times," "Barron's," "Christian Science Monitor," and "Rheinischer Merkur" as well as specialist publications on the energy and financial industries and the European, Middle Eastern, African, Asian and Latin American regions. She has a Bachelor of Science in physics and geology from Manchester University and a Master of Science in marine geotechnics from the University of Wales School of Ocean Sciences.

unsearched gold ore from famous mining claims | colorado gold ore

unsearched gold ore from famous mining claims | colorado gold ore

Our Genuine Colorado Gold ore is hand mined from famous mining districts in the beautiful Colorado mountains. We are a family prospecting business we have spent decades prospecting, assaying, and processing gold ore to build an impressive collection of gold claims. Each order is guaranteed to be unsearched, and each order will contain gold. We do regularly run our own material and have it tested by assay and lab facilities. Our medium to high grade ore is loaded with gold, silver, and other precious metals, and is sure to be a hit no matter how small or large your operation is.

Crushing and processing gold ore takes some technique, trial and error, and some patience, but you will find plenty of gold in our ore. Many customers report anywhere between half a gram to a few grams a pound and some pieces are just veined all the way through making them far more valuable as specimens than for ore processing. We are a family business that aims to provide the best ore available and strive for 100% customer satisfaction. GOLD! Mine at home! We are proud to offer USPS Priority shipping anywhere in the USA which makes our gold ore some of the most affordable and highest quality on the market. Obviously each order is different, but please reach out to us with any concerns and we would be happy to resolve them in whichever way we can.

3. Enjoy! Receive your order in a matter of days because our free upgrade to USPS Priority mail shipping on every order, and enjoy crushing, processing, and refining real Colorado gold!

Here at Colorado Gold Ore and Prestige Minerals & Gems, we strive to offer the best gold ore for sale on the web today. Colorado Gold Ore is a small family business based out of beautiful Boulder, Colorado. We proudly take our old family Toyota truck, a few dozen five gallon buckets, and a pile of hand tools and shovels to the famous mining districts and towns from the Colorado Gold Rush to hand mine and select ore for you.

Our customers who thoroughly process our ore often report positive ROI and purchase between 25 and 100 pounds from us a month. Everyone has their own techniques to crushing, milling, and refining, and if you are willing to put in the work, you will be able recover some shiny pure gold profit. Our most successful customers buy in bulk to access our impressive discount pricing.

We have our own in house XRF analysis lab if you need your own ores tested and also have equipment to do precious metals, environmental, lead, manufacturing, and many other types of anayslsis.

We aim for 100% satisfaction. We put a lot of physical work and technique into finding you the best gold ore. If you are not happy with your order in any way, please feel free to contact us so we can see how to turn you into a happy ore customer!

eight natural geologic signs pointing toward gold - treasure talk

eight natural geologic signs pointing toward gold - treasure talk

Sometimes I get asked, What should I look for when metal detecting that will tell me there is gold present in the ground? I always respond that I wish there was a simple, easy answer. The problem is that gold occurs in many types of deposits, and what indicators work great for one type of deposit dont always work well for another. As an example, in some places the presence of vein quartz on the ground is a valuable indicator, yet I have been in places where there is so much vein quartz everywhere that is worthless as an indicator, and other places that have good gold but are essentially devoid of any vein quartz at all.

Know Your District The geologic concepts and indications that are the most important for finding gold vary from location to location. There is no one indicator of gold that always works. What works well in one district may not always work so well in another. In one place a certain type of rock may host all the deposits. In another district the most important may be areas colored red by high iron concentrations. Perhaps the most important thing in prospecting is to know the characteristics of the district you are hunting! Like sports, there is a home court advantage for prospectors who have learned the particulars of the district in which they are working.

motar and pestle

motar and pestle

We ship same day or next business day. USA payment and available via PAYPAL. Other shipping available worldwide paid via International Money Orders and International Cashiers Cheques. Contact us via e-mail for any international shipping questions.

We ship same day or next business day. USA payment and available via PAYPAL. Other shipping available worldwide paid via International Money Orders and International Cashiers Cheques. Contact us via e-mail for any international shipping questions.

easy ways to extract gold from a rock (with pictures) - wikihow

easy ways to extract gold from a rock (with pictures) - wikihow

This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. wikiHow's Content Management Team carefully monitors the work from our editorial staff to ensure that each article is backed by trusted research and meets our high quality standards. There are 8 references cited in this article, which can be found at the bottom of the page. This article has been viewed 25,677 times. Learn more...

Prospecting for gold can be a fun hobby, though its a lot of work! You may be able to harvest gold flakes from rock if it contains gold among its minerals. The safest way to extract gold from rocks at home is to crush the rocks. However, you might use mercury to extract the gold if youre able to obtain some, though this is dangerous. While both mercury and cyanide can be used to extract gold from rock, it's hazardous to both your health and the environment to use them.

Variation: The best way to crush the rocks is to use a crushing machine, which will produce a fine powder with little effort on your part. Consider purchasing a rock crusher designed for extracting gold if youre serious about prospecting.[4] X Research source

Warning: Heating the mixture releases mercury in the form of a gas, so work in a ventilated area and wear safety gear. The potato can absorb the gas, but its still dangerous to heat the gold and mercury amalgam.

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