Questions tagged [ore]

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"Bohnerze" pisolitic ore in Switzerland

I am going hunting for iron ore in Switzerland and the plan is to visit some old abandoned mines in the Jura mountains. I am not quite sure exactly what I am looking for though, in the past I have ...
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4 votes
1 answer
39 views

Why were Fe-oxides not usually used for finding skarn Fe ore deposits in geochemical exploration?

I found that Fe-oxides were usually not used for vectoring Fe mineral deposits of skarn type in geochemical exploration. As an indicator element, the common practice told us Fe-oxides should be the ...
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1 vote
0 answers
28 views

Ore prospecting and the low-hanging fruit effect

I'm trying to acquire an understanding of how the difficulty of prospecting for useful ore has increased over historical timescales. Intuitively, I would expect that centuries or millennia ago, you ...
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  • 549
19 votes
3 answers
4k views

Are metals and other elements in every continent?

I originally thought that you can only find certain things like iron, copper, and other things in certain places in the world and deep in mines but I saw in a few YouTube videos that you can find iron ...
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0 answers
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What are the favourable conditions for the formation of porphyry copper deposits?

Favourable condition for the formation of porphyry copper deposits is : 1. Extremely low oxygen fugacity in initial magma 2. High water content in initial magma 3. Crystallization of magama at deep ...
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3 votes
1 answer
122 views

What ore minerals are likely to be found in a thin section like this? What can we deduce from the structure?

The following image is of polished sample of mineral-rich rock. There are two major portions we can see that is ore minerals and rest the grayish material is gangue. The photo was taken with an ore ...
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4 votes
2 answers
303 views

Why are metals so separated in the Earths crust? [duplicate]

I find it very surprising that metal ore deposits are so separate, and unevenly separated on the Earth. I do understand that there were various different conditions at some point in time in the ...
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10 votes
6 answers
5k views

Can living where (rare) earth magnetic ore is abundant provide any protection from cosmic radiation?

Can living in a region that is rich in (rare) earth metal that has an inherently strong magnetic field provide any protection from cosmic radiation? Where are the strongest magnetic field other than ...
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3 votes
2 answers
88 views

how can a complete novice find ore?

I live near Sydney, Australia and I really like the idea of sourcing my own ore from the wilderness. I want to give my kids a really hands on education into how primitive industries actually kicked ...
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1 vote
1 answer
223 views

What is cluster situation with respect to sand mining?

Guideline on handling cluster issues : The original Environmental Impact Assessment ( EIA ) notification does not provide for the procedure to handle cluster situation, which has been proposed in ...
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3 votes
1 answer
112 views

Where on Earth is the highest none polar magnetic fields?

Is there anywhere that magnetic ore deposits are strong enough to have a magnetic field that would be stronger then Earths' magnetic poles by proximity? I'm not asking Where on Earth is the ...
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1 vote
1 answer
2k views

Is this platinum ore? [closed]

Was found in central Mexico. It's very metallic, shiny, showing some streaks of gold and quartz.
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16 votes
3 answers
29k views

How do geologists find ore deposits?

From my research, there is lots of information on how to extract ore, but I can't find any information on how these ore deposits are found in the first place, apart from 'looking for surface ...
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