| Reference Type | Journal (article/letter/editorial) |
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| Title | Westerveldite from Igdlúnguaq, Ilímaussaq alkaline massif, South Greenland |
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| Journal | Mineralogical Magazine | ISSN | 0026-461X |
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| Authors | Oen, I. S. | Author |
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| Burke, E. A. J. | Author |
| Kieft, C. | Author |
| Year | 1977 (March) | Volume | 41 |
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| Issue | 317 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_41/41-317-77.pdf+ |
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| DOI | doi:10.1180/minmag.1977.041.317.12Search in ResearchGate |
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| Generate Citation Formats |
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| Classification | Not set | LoC | Not set |
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| Mindat Ref. ID | 2730 | Long-form Identifier | mindat:1:5:2730:8 |
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| GUID | 0 |
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| Full Reference | Oen, I. S., Burke, E. A. J., Kieft, C. (1977) Westerveldite from Igdlúnguaq, Ilímaussaq alkaline massif, South Greenland. Mineralogical Magazine, 41 (317) 77-83 doi:10.1180/minmag.1977.041.317.12 |
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| Plain Text | Oen, I. S., Burke, E. A. J., Kieft, C. (1977) Westerveldite from Igdlúnguaq, Ilímaussaq alkaline massif, South Greenland. Mineralogical Magazine, 41 (317) 77-83 doi:10.1180/minmag.1977.041.317.12 |
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| In | (1977, March) Mineralogical Magazine Vol. 41 (317) Mineralogical Society |
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| Abstract/Notes | Microprobe and X-ray investigation of a mineral occurring with breithauptite, nickeline, and other arsenides in the naujaite at Igdlúnguaq, Ilímaussaq alkaline massif, S. Greenland, shows that this mineral, which was formerly misidentified as ‘maucherite’, is a westerveldite (Fe0·85Ni0·15)As, of much iron-richer composition than the nickeloan westerveldites from the only two other known occurrences of this mineral. Westerveldite from Igdlúnguaq was presumably formed by reaction of nickeline with iron-rich solutions under conditions of reheating at temperatures of about 450° C and under partial pressures of arsenic below those necessary to stabilize nickeline. Sulphur-bearing löllingite occurs as exsolution blades in the westerveldite. Iron-rich nickeline, up to a composition (Ni0·82Fe0·18)As0·95Sb0·05, was presumably formed by recrystallization of nickeline in the transition stage just before this mineral became unstable and was replaced by westerveldite. |
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