ELECTRUM MINERAL FACTS - Nevada Outback

Electrum Mineral Facts: Chemical Formula: Au(Ag) Gold and Silver of gold and silver. It is a natural alloy of the two metals. The electrum known to Pliny the ancient Roman historian was probably named on account of its yellow color, from the Greek word for amber, of Strabo. It was defined as a natural alloy containing one-fifth of silver. The term is occasionally used by modern writers to

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Gold test – is it real? Or fool's gold? - Goldbay

Does what you're looking at actually look like gold? Or is it sparkly and the grayish or silver in color? Natural gold, looks like gold, it looks like jewelry, it's a buttery yellow color, and it's "soft looking". If you look at this picture you will see a gold ring next a couple of different kinds of gold naturally

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Facts About Gold | Live Science

Gold has a number of artificial, unstable isotopes (the exact number depends on the scientist you consult), but occurs naturally only as Au-197. You can eat gold if you really want to.

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How Do Diamonds Form? | They Don't Form From

Many people believe that diamonds are formed from the metamorphism of coal. That idea continues to be the "how diamonds form" story in many science classrooms. Coal has rarely - if ever - played a role in the formation of diamonds. In fact, most diamonds that have been dated are much older than

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Where does gold come from? › Dr Karl's Great

Where does gold come from? The story of gold involves exploding stars, asteroids, bacteria, earthquakes and lots of geology. Dr Karl digs back in time to when it all started.

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Gold formed as Natural Crystals, Gold nuggets and

Natural gold nuggets and specimens as shown here on this web page are normally in the range of 80 to 90 percent gold (roughly 20-23Kt). And by far most gold was formed in particles so small that they can't easily be seen by the human eye, visible only under a microscope, so these large natural chunks shown here are very rare indeed. For More on Gold as a mineral, see Mineral Gold Information

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How Is Silver Formed? | Reference.com

Deep in the Earth's crust, silver is one of the important metals that can be found, along with gold, copper, lead and zinc. It is formed by forming compounds with sulfur. Due to hot temperature, salty water called brine dissolves, collects and concentrates silver into the brine. Once the brine mixes with cold sea water, the metal does not stay dissolved and precipitates on the sea floor as

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How Do Gold Nuggets Form? - Geology In

1-Gold nuggets form because gold is malleable, bendable and sticky. During transport small gold particles may stick together or indeed be cold-welded together by pressure and shearing in movement of gravels down a slope or in a stream bed. Shearing and hammering creates a small nugget and then they snowball together by squeezing, hammering and shearing in moving gravels. This sounds impossible

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How is Gold Formed Naturally? | Yahoo Answers

09/03/2010· Gold is an extremely inert element i.e. it hardly reacts with other elements hence is once of the most stable metals available- that explains why you can dig it straight out from the ground in its raw shiny form, unlike other metals such as tin or copper which need to be separated from their naturally-occurring oxides before they can be used.

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How Do Gold Nuggets Form? - Geology In

1-Gold nuggets form because gold is malleable, bendable and sticky. During transport small gold particles may stick together or indeed be cold-welded together by pressure and shearing in movement of gravels down a slope or in a stream bed. Shearing and hammering creates a small nugget and then they snowball together by squeezing, hammering and shearing in moving gravels. This sounds impossible

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Classroom Resources | Geoscience Australia

Explore our online exhibits, individual images and virtual tours of the National Mineral Collection and Geoscience Australia TimeWalk via Google Arts & Culture.. Identifying Minerals – an introduction to minerals and their properties such as hardness and streak; Gems from the safe – view the valuable gem and mineral specimens that are not on public display

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How is gold made? - UCSB Science Line

Gold, in its pure form is not made - it occurs naturally in an elemental form. On a side note, the history of alchemy was largely based on the desire of people (probably kings!) to combine other (cheap and abundant) elements and compounds to make gold. Most of the "gold" products such as jewelry, etc., have a rating in karats, as you probably already know. One karat is 1/24 part (by weight

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Natural Gold Indicators (Part 1) - Gold Geology

Natural Gold Indicators (Part 1) – Gold Geology Lesson. Rare Gold Nuggets. August 22, 2014. Gold Prospecting, Recent Posts Gold Geology and the Natural Indicators that can help you find gold. Not all gold deposits out there have been found and mined. There are still places that contain gold that have never been worked, despite the fact that miners have been searching for gold for hundreds of

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How Do Gold Nuggets Form? - Geology In

1-Gold nuggets form because gold is malleable, bendable and sticky. During transport small gold particles may stick together or indeed be cold-welded together by pressure and shearing in movement of gravels down a slope or in a stream bed. Shearing and hammering creates a small nugget and then they snowball together by squeezing, hammering and shearing in moving gravels. This sounds impossible

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How Pure are Natural Gold Nuggets?

Natural alloys of various metals naturally occur with gold in its natural form. The refining process is needed to remove these impurities to produce gold bullion that is truly pure. Matrix in the Nuggets It is worth noting that we are not talking about impurities that are found as a matrix on some gold nuggets. This might include quartz, ironstone, or iron staining down in the grooves of the

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Gold Purity Guide: Difference between 24k, 22k

Since this is the purest form of gold, it is naturally more expensive than 22K or 18K gold. However, this type of gold is lesser in density as compared to gold of a lower karatage which makes it soft and pliable. Hence, it is not suited for regular forms of jewellery. Coins and bars are mostly bought of 24K gold purity. 24K gold is also used in

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How Do Crystals Form & Grow? | Geology Page

Most minerals occur naturally as crystals. Every crystal has an orderly, internal pattern of atoms, with a distinctive way of locking new atoms into that pattern to repeat it again and again. The shape of the resulting crystaL-such as a cube (like salt) or a six-sided form (like a snowflake)-mirrors the internal arrangement of the atoms. As crystals grow, differences in temperature and

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How is silver naturally formed? - Quora

Silver forms naturally in supernovae, exploding stars, and diffuses as dust in the universe until it happens to come into the vicinity of a star-forming region, where some of it falls into the accretion disk and ends up in a rocky planet like Eart

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Natural Gold Indicators (Part 1) - Gold Geology

Natural Gold Indicators (Part 1) – Gold Geology Lesson. Rare Gold Nuggets. August 22, 2014. Gold Prospecting, Recent Posts Gold Geology and the Natural Indicators that can help you find gold. Not all gold deposits out there have been found and mined. There are still places that contain gold that have never been worked, despite the fact that miners have been searching for gold for hundreds of

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Forming Deposits | AMNH

Forming Deposits Part of the Gold exhibition. Gold. Share. Collect. Gold may occur as deposits called lodes, or veins, in fractured rock. It may also be dispersed within Earth's crust. Most lode deposits form when heated fluids circulate through gold-bearing rocks, picking up gold and concentrating it in new locations in the crust. Chemical differences in the fluids and the rocks, as well as

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