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Questions tagged [minerals]

For questions about minerals, i.e. naturally occurring crystalline chemical compounds. Also consider [metallurgy].

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What is chemical formula of Bauxite?

My book says Aluminium is extracted from its ore bauxite $\ce{Al2O3.nH2O}$ What does "n" stands for? Does it mean that there is no fixed amount of water in bauxite?
7
votes
1answer
158 views

Can glass be made with anorthite?

The lunar highlands are made mostly of anorthosite (90% anorthite, the rest oxides of magnesium, iron, a little titanium, and traces of others), and pretty pure anorthite ($\ce{CaAl2Si2O8}$) is common....
6
votes
1answer
341 views

Is there any way to refine Feldspar?

Feldspars are mostly composed of three compounds: KAlSi$_3$O$_8$ NaAlSi$_3$O$_8$ CaAl$_2$Si$_2$O$_8$ I notice they each have Aluminum. Feldspar is far more common than Bauxite (the only Aluminum ore ...
2
votes
1answer
91 views

Is there pure iron in nature?

Is there pure iron in nature, would that be not become Iron Oxide (rust) immediately because of the humidity? How do we produce iron ore/dust on the lab/industry?
1
vote
1answer
107 views

How can I obtain oxygen gas from plagioclase

I would like to know if there is a possibility to decompose plagioclase to obtain oxygen gas to be used in a combustion reaction? I know that oxygen represents $47\%$ of the weight of 1 mole of ...