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“If you can’t grow it, you gotta mine it”
MINERAL RESOURCES The earth’s crust is the storehouse of all materials that we can use “If you can’t grow it, you gotta mine it”
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Mineral Resource Mineral Resource – earth’s storehouse of useful minerals that can be extracted Basically, all the minerals in the crust that can be realistically dug up for human use
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Mineral Reserves Reserve – the already identified mineral deposits that can be recovered profitably How is this different from mineral resources? They are still in the ground, but have not been dug up because they don’t need to be extracted at this time (the market may already be flooded with these elements or there may be other deposits that are easier to get to at this time)
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Did you say Oar or Ore? Ores – useful metallic minerals that can be mined for a profit Metals include things such as Iron, Magnesium, Cobalt, Nickel, Titanium, Manganese, Zinc, etc…
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$$$ Chah-Ching $$$ How do we know if a mineral resource is going to be profitable for a mining company to dig it out of the ground? It must be found in concentrations above its average crustal abundance The value of the mineral must outweigh the cost of digging it up
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Example for the CEOs If the average crustal abundance of cinnabar is 0.93% and you discover a chunk of rock which contains 2.5% cinnabar, should you mine it? Absolutely!!! ps – cinnabar is a mineral that contains the liquid metal mercury (HgS)
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Is it worth it? Digging it up is more complicated than all that though… First you have to find the deposits Then you have to extract them Then you have to transport them Then, isolate the elements you want And then you have to pay everyone involved Finally, you can then sell the elements for profit
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And one more thing to consider
Not only does the crustal % of the deposit play into the equation of a profit But, also economic demand (do we all of a sudden need more of a particular mineral) Extracting technology (are we waiting for new tools to get at harder to reach places)
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How do we mine resources?
Surface Mining – Above ground mines that are nothing more than a big hole in the ground…sometimes called open-pit mines Underground mines – exactly that; mines where the surface is not touched and all the mined material comes up via railways, shafts, and elevators
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Some BIG Toys of Open-Pit Mines
Huge Earth Mover World’s Largest Dump Truck
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Some more BIG Toys World’s Largest Dragline The Bucket of the Dragline
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Large CATS at Work
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An Open-Pit Mine
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OK, Let’s go Underground
Remote controlled continuous miner Longwall Mining Machine
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Diagram of an Underground Mine
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Do they just leave a hole there?
STEP 2: Empty Mine with rain water in it STEP 1: Mining in progress STEP 3: Reclaiming begins STEP 4: Reclaiming complete
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Mining & Reclaiming Together
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Mining & Reclaiming Together
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Gems Gemstones - Minerals that are beautiful, rare, valuable, polished, and cut into specific reflecting shapes Gems are nothing more than pretty, pure minerals Rough Sapphire Stones Cut & Polished Sapphires
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To Review: Know the difference between a resource, a reserve, and an ore Several factors go into determining whether or not a mineral will be profitable to mine: location, technology, supply/demand, size and percentage of deposit Gemstones are minerals that are rare, pretty, polished, and cut
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