| Reference Type | Journal (article/letter/editorial) |
|---|
| Title | Narsarsukite: a new occurrence in peralkaline trachyte, south Greenland |
|---|
| Journal | Mineralogical Magazine |
|---|
| Authors | Upton, B. G. J. | Author |
|---|
| Macdonald, R. | Author |
| Hill, P. G. | Author |
| Jefferies, B. | Author |
| Ford, C. E. | Author |
| Year | 1976 (September) | Volume | 40 |
|---|
| Page(s) | 737-746 | Issue | 315 |
|---|
| Publisher | Mineralogical Society |
|---|
| Download URL | https://rruff.info/doclib/MinMag/Volume_40/40-315-737.pdf+ |
|---|
| DOI | doi:10.1180/minmag.1976.040.315.07Search in ResearchGate |
|---|
| Classification | Not set | LoC | Not set |
|---|
| Mindat Ref. ID | 6963 | Long-form Identifier | mindat:1:5:6963:6 |
|---|
|
| GUID | cf8a84fb-9260-47d1-9e8f-4340faaa1c1e |
|---|
| Full Reference | Upton, B. G. J., Macdonald, R., Hill, P. G., Jefferies, B., Ford, C. E. (1976) Narsarsukite: a new occurrence in peralkaline trachyte, south Greenland. Mineralogical Magazine, 40 (315) 737-746 doi:10.1180/minmag.1976.040.315.07 |
|---|
| Plain Text | Upton, B. G. J., Macdonald, R., Hill, P. G., Jefferies, B., Ford, C. E. (1976) Narsarsukite: a new occurrence in peralkaline trachyte, south Greenland. Mineralogical Magazine, 40 (315) 737-746 doi:10.1180/minmag.1976.040.315.07 |
|---|
| In | (1976, September) Mineralogical Magazine Vol. 40 (315) Mineralogical Society |
|---|
| Abstract/Notes | A flinty, spherulitic dyke of peralkaiine trachyte in a Precambrian dyke-swarm consists mainly of albite and aegirine. Within this, euhedral crystals of narsarsukite, Na2(Ti,Fe)Si4O10(F), occur as short prisms elongate parallel to c. This distinguishes them from all previously described narsarsukites, which have tabular habits. Minor phases present include micas, apatite, quartz, pectolite, nordite, and a thorium silicate. Probe analyses are presented for narsarsukite, aegirine, aibite, biotite, apatite, pectolite, nordite, and the thorium silicate.On mineralogical and geochemical grounds it is unlikely that the narsarsukite-bearing dyke is a differentiate of supposedly mantle-derived basalt-trachyte-comendite magmas in the region. The dyke is colinear with a comendite dyke exposed at lower altitude and it is suggested that the narsarsukite- bearing dyke developed as a rhcomorphic fenite generated by reaction between quartz diorite basement and fugitive alkaline solutions from the subjacent comendite. |
|---|
These are possibly similar items as determined by title/reference text matching only.
