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Mining
Mining for coal is something that is widely known, but did you know that diamonds, uranium, copper, and other non-renewable natural resources are also mined? There are two types of mining; surface and subsurface. Questions about the methods and types of mining, what ores are mined, and related questions should be asked in this category.
4,677 Questions
- Salt, Iron ore, silver and copper were all mined in the Alps in the past, although the Alps are not as mineral rich as many other fold mountain ranges such as the Andes
- Mining has declined dramatically in recent years due to cheaper foreign imports
Data mining is effectively storing and analysing old pieces of data and predicting what's going to happened in future based on trends and patterns in that data.
What African country is the leading producer of copper?
Zambia is the leading African producer of copper.
Describe life in a boomtown and explain why they were created?
Miners are motivated by money so they don't spend much time building cabins etc. A boomtown would spring up when the miners found enough value to support stores, bars, assayers, mills etc. You don't get law until you become a real town, so life was hard, fast and cheap.
The chemical composition of ruby is aluminum oxide (Al 2 O3). Its specific gravity is 3.99 to 4.00 and refractive index range is 1.760-1.768 to 1.770-1.779. Ruby's hardness on Mohs scale is 9. It's the next hardest mineral after diamond.
Where can you find flint outcrops in Kentucky?
You can't any longer. All sources have been depleted by modern flintknappers.
How do you calculate the stripping ratio?
We divide the overburden thickness by ore thickness to get the stripping ratio For example if we have an overburden thickness of 80m and ore thickness of 50 m , then the stripping ratio will be: 80/50= 1.6
Where is the largest quarry in the world?
The largest quarry in the world is the Thornton Quarry, located near Chicago in Illinois, USA. It is known for being one of the largest commercial limestone quarries in the world, spanning over 800 acres.
Andesite rock is commonly used in construction as a decorative stone for landscaping, pathways, walls, and facades. It is also utilized as a component in the production of mineral wool insulation and as a soil amendment for gardening due to its ability to improve soil drainage. Additionally, andesite can be crushed and used as a base material in road construction and as an aggregate in concrete production.
A porous rock is a type of rock that contains small holes or spaces within its structure, allowing fluids (such as water, oil, or gas) to pass through it. These pores can vary in size and shape, influencing the rock's ability to store and transmit fluids.
You can find detailed maps of Australian gold mines on the websites of mining companies, government agencies like Geoscience Australia, and mapping services like Google Maps. These maps typically show the location of existing and historical gold mines, as well as surrounding infrastructure and geological features. Be sure to check the relevant sources for the most up-to-date and accurate information.
Coal mining is a major industry in what eastern mountain range?
Coal mining is a major industry in the Appalachian Mountains in the eastern United States.
Kimberlite magma is a rare type of volcanic rock that is known for containing diamonds. It is derived from the Earth's mantle and is typically generated during deep-source volcanic eruptions. Kimberlite deposits are important for diamond mining, as they carry diamonds to the surface from deep within the Earth.
What is the melting point of sandstone?
the melting point of sandstone is approximately 1300.68754893C'
The melting point of sandstone depends on its density, or hardness. Sandstone varies greatly in chemical composition, ranging across different properties, from sand so loosely compacted that it crumbles in the hand, to stone so hard it was once used to mill grain into flour. The higher the density of sandstone, the higher the melting point. Suffice it to say that sandstone, no matter how dense, is never used to make the bricks of a pottery kiln, even though that would be a very inexpensive stone to use, because the stone is not reliable at the high temperatures some kilns sometimes require. For instance, bright white hot, the temperature required to fire stoneware, requires a heat of at least 1300 degrees Celsius, or about 2380 Fahrenheit, for several hours. That much heat would almost certainly, and permanently, damage a kiln made of even the hardest sandstone.
For the same reason, sandstone is no longer acceptable in the building code of most developed nations for the brick of a chimney.
Gypsum is mined primarily where ancient salt seas existed. Gypsum is a naturally occurring salt/limestone, that is left behind when the water evaporates.
Gypsum is mined near Las Vegas, Nevada and in western Michigan. The largest gypsum deposits in the world, in fact, are in Michigan.
"Mylonite" is a term coined by Charles Lapworth in 1885 to describe a fine grained, well-laminated rock he had found in the Moine Thrust Zone of the Scottish Highlands. The term has come into general usage to indicate any foliated (and usually lineated) fine grained metamorphic rock which shows evidence for strong ductile deformation. The term is purely structural and conveys no indication of the mineralogy of the rock. Thus, a mylonite can be of any rock type.
