Hafnon
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Hafnon is a hafnium nesosilicate mineral with the idealized chemical formula Template:Chem2. It is the mineral form of Hafnium silicate and one of the few known minerals with essential hafnium.
Chemistry
Hafnon forms a solid solution series with its zirconium counterpart, zircon (Template:Chem2). Several more
or Template:Chem2.[1] In natural part of the zirconium is replaced by the very similar hafnium and so natural zircon is never pure Template:Chem2. A zircon with 100% hafnium substitution can be made synthetically and is hafnon.
Hafnon occurs as transparent red to red orange tetragonal crystals with a hardness of 7.5.[2][3]
Hafnon occurs naturally in tantalum-bearing granite pegmatites in the Zambezia district, Mozambique and in weathered pegmatites at Mount Holland, Western Australia.[4] It has also been reported from locations in Ontario, Quebec and Manitoba, Canada; North Carolina, United States; and in Zimbabwe.[2]
References
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- ↑ http://www.minerals.net/mineral/silicate/neso/zircon/hafnon.htm Minerals.net
- ↑ a b http://www.mindat.org/min-1792.html Mindat
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- ↑ http://www.handbookofmineralogy.org/pdfs/Hafnon.PDF Script error: No such module "webarchive". Handbook of Mineralogy
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- Emsley, John. Nature's Building Blocks. Oxford, 2001. Template:ISBN
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