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Pentlandite : ウィキペディア英語版
Pentlandite

Pentlandite is an iron-nickel sulfide, (Fe,Ni)9S8. Pentlandite has a narrow variation range in Ni:Fe but it is usually described as having a Ni:Fe of 1:1. It also contains minor cobalt, usually at low wt% levels.
Pentlandite forms isometric crystals, but it is normally found in massive granular aggregates. It is brittle with a hardness of 3.5 - 4 and specific gravity of 4.6 - 5.0 and is non-magnetic. It has a yellowish bronze color.
==Name and discovery==
It is named after the Irish scientist Joseph Barclay Pentland (1797–1873), who first noted the mineral.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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