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Ore genesis

Various theories of ore genesis explain how the various types of mineral deposits form within the Earth's crust. Ore genesis theories vary depending on the mineral or commodity examined.
Ore genesis theories generally involve three components source, transport or conduit, and trap. (This also applies to the petroleum industry petroleum geologists originated this analysis.)
Source is required because metal must come from somewhere, and be liberated by some process.

How Is Gold Formed and Where Does it Come From

18/05/20150183;32;Where does gold come from? Sadly, leprechauns dont exist, so we wont be finding any gold pots at the ends of rainbows. Similarly, alchemists never managed to turn base metals into gold. How is gold actually formed? If we can recall back to our high school chemistry classes, we might remember that in its purest Read more 187;

GOLD

Gold has had an inestimable effect on human history. It has been crafted, mined, worshipped, plundered, fought over and traded for thousands of years. Today, the search for gold is as eager as

DISCOVERING FOSSILS How Great Britain formed

How Great Britain Formed Britains geological history and rock record is remarkably complex. When considered in a broader context the rocks are actually telling the story of how Britain has moved around the Earths surface and the various environments and events it has encountered on the way.

Gold Mining Facts Lesson for Kids Study

What is Gold Mining? Have you ever wondered where the gold from a pretty pair of earrings comes from? It's mined Gold mining is the process of extracting gold from its natural form. Let's explore

Where Is Gold Found in Nature? Reference

Gold is found throughout the earth and the sea. There are natural spots on the earth that contain more amounts of gold. Gold is commonly found within rock and granite in the earth. In its natural form, gold is very irregular and not refined, as it is normally seen in its finished state. Gold is found in many forms. These forms include plates

Geological History of Mount Warning and the Tweed Volcano

At this stage, the cycle would begin again with a new volcano being formed over the stationary hotspot and so on. Around 23 million years ago, the Gold Coast Tweed area began its transit over a hot spot giving rise to an enormous shield volcano, the Tweed Volcano, that remained active for

Gold Geoscience Australia

New theory suggests gold deposits were formed as a result

18/03/20130183;32;A new theory based on a simple but viable geologic model claims that over 80 percent of all commercial gold deposits were formed in a flash. Gold seams

How is Gold Formed Know This and You Will Find Gold Nuggets

Geology of Australia

The geology of Australia includes virtually all known rock types and from all geological time periods spanning over 3.8 billion years of the Earth's history. Australia is a

The Geology of Gold Deposits Nevada Outback

The effort to understand the geology of gold was perhaps man's first serious effort at understanding the earth's rocks and minerals. Gold is actually a relatively scarce element on the crust of the earth, but it occurs in trace quantities spread throughout many different kinds of rocks and in many different geological environments.

How Is Copper Formed? Reference

How Is Copper Formed? Copper forms as molten rock with small amounts of copper fluid crystallizes. As the larger rock continues to solidify, the fluid rich in copper moves into cracks, eventually solidifying as well. Because the copper solidifies later than other minerals within the larger rock, the final deposits have a high concentration. Copper appears most frequently in deposits in which

How gold is formed on earth. YouTube

17/02/20170183;32;World geology with national geographic. Gold extraction with BORAX for small scale miners Rather Rich amp; Healthy than Poor amp; Poisoned Duration 949. geusTUBE 1,038,614 views

Geology Of Hard Rock Gold Deposits

Man knew more about gold itself and lusted for it much before he understood the geology of hard rock gold or its deposits Man had to learn about hard rock extraction methods and how to locate those gold deposits just to satisfy the thirst for that yellow metal.

Natural Gold Indicators (Part 1) Gold Geology Lesson

22/08/20140183;32;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 years now.

Gold USGS

In pure form gold has a metallic luster and is sun yellow, but mixtures of other metals, such as silver, copper, nickel, platinum, palladium, tellurium, and iron, with gold create various color hues ranging from silver white to green and orange red. Pure gold is relatively soft it has about the hardness of a penny. It is the most malleable and

Geology of Gold Mineralization amp; How Gold Deposits are Formed

Eight Natural Geologic Signs Pointing Toward Gold

Correct Topography As a general concept, the coarser gold does tend to hang up farther upstream. In the deserts, most of the best residual placers form in areas with moderate to flat slopes. Extensions of Known Mineral or Placer Areas Other than pipe shaped bodies, most small scale gold deposits have a linear component. It is fairly common

How does Gold Naturally Form on Earth's Crust Veins

Where does gold originate and how does it actually form in nature? Gold is not formed on the Earth like diamonds and many other gems and minerals. Instead, most scientists now believe that gold actually came to earth from outer space in large meteorites that have struck the planet over billions of years. In fact, most of the gold on Earth is