| Reference Type | Journal (article/letter/editorial) |
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| Title | Strontian melilite in a nephelinite lava from Etinde, Cameroon |
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| Journal | Mineralogical Magazine | ISSN | 0026-461X |
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| Authors | Fitton, J. G. | Author |
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| Hughes, D. J. | Author |
| Year | 1981 (September) | Volume | 44 |
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| Issue | 335 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_44/44-335-261.pdf+ |
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| DOI | doi:10.1180/minmag.1981.044.335.03Search 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 | 3268 | Long-form Identifier | mindat:1:5:3268:5 |
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| GUID | 0 |
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| Full Reference | Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03 |
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| Plain Text | Fitton, J. G., Hughes, D. J. (1981) Strontian melilite in a nephelinite lava from Etinde, Cameroon. Mineralogical Magazine, 44 (335) 261-264 doi:10.1180/minmag.1981.044.335.03 |
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| In | (1981, September) Mineralogical Magazine Vol. 44 (335) Mineralogical Society |
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| Abstract/Notes | AbstractStrontium-rich (up to 16 wt% SrO) melilite occurs as microphenocrysts in a nosean-leucite-nephelinite lava from Etinde, Cameroon. Electron microprobe analyses show that the melilite is very strongly zoned with Sr, Fe, and Na enrichment towards the crystal rims. Sodium melilite and sodium ferrimelilite are the dominant end-member molecules and together account for up to 76 mole%. The crystals are optically negative and strongly birefringent with birefringence ranging from 0.014 in the cores to 0.032 at the crystal rims. Refractive indices measured at the rim of one crystal gave ω = 1.656, ɛ = 1.628. The cell dimensions of strontian melilite are a = 7.765Å, c = 5.054Å. |
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