| 释义 |
greigite, n. Min.
Brit. |ˈgriːgʌɪt|, U.S. |ˈgriˌgaɪt|
[‹ the name of Joseph Wilson Greig (1895–1977), U.S. mineralogist and geochemist + -ite suffix1.]
A strongly magnetic iron sulphide mineral that occurs as microscopic pink, blue, or black crystals and is found in lake sediments and magnetosomes.
Greigite is a member of the linnaeite group. Chemical formula: Fe3S4. Crystal system: cubic.
1964B. J. Skinner et al. in Amer. Mineralogist 49 543 We have discovered a magnetic iron sulfide with the formula Fe2S4 and a spinel structure..and propose to name it greigite..in honor of Dr. J. W. Greig..in recognition of his many contributions to mineralogy and physical chemistry. 1992W. A. Deer et al. Introd. Rock-forming Minerals (ed. 2) 586 Metastable phases such as marcasite, mackinawite..and greigite..may play an important role as precursors for the formation of pyrite. 1997D. Goldsmith Hunt for Life on Mars 78 The magnetic minerals that were found in ALH 84001's carbonate globules are magnetite, pyrrhotite (whose composition resembles greigite's) and greigite itself. |