Investigating the interstellar dust through the Fe K-edge

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Table 1

List of samples in our set with their relative chemical formulae.

#	Name	Chemical formula	State

1	Olivine^a	Mg_1.56Fe_0.4Si_0.91O₄	crystalline
2	En60Fs40^b	Mg_0.6Fe_0.4SiO₃	amorphous
3	En60Fs40^b	Mg_0.6Fe_0.4SiO₃	crystalline
4	Troilite^c	FeS	crystalline
5	Hypersthene^d	Mg_1.502Fe_0.498Si₂O₆	crystalline
6	En90Fs10^b	Mg_0.9Fe_0.1SiO₃	crystalline
7	En90Fs10^b	Mg_0.9Fe_0.1SiO₃	amorphous
8	Pyrrhotite^b	Fe_0.875S	crystalline

Notes. The nomenclature En(x)Fs(x-1) reveals the fraction of iron (or magnesium) included in the compound; “En” stands for enstatite (the magnesium end-member of the pyroxene silicate mineral series, MgSiO₃) and “Fs” for ferrosilite (the respective iron end-member, FeSiO₃).

^(a)

origin: Sri Lanka,

^(b)

synthesised in laboratories at AIU Jena and Osaka University,

^(c)

meteoritic origin,

^(d)

origin: Paul Island, Labrador.

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