Titaniferous Clinohumite from the Gardiner Complex, East Greenland.

T.F.D. Nielsen, O. Johnsen

Publikation: Bidrag til tidsskriftArtikelForskningpeer review

Abstrakt

Titaniferous clinohumite occurs as a major constituent in the centres of late magmatic veins in the Tertiary ultramafic, strongly alkaline Gardiner Plateau Complex in East Greenland (69° N. and 32° W.). The complex is briefly described and an electron microprobe analysis of titaniferous clinohumite is presented. This gives the following: 38·44% SiO2, 2·99% TiO2, 4·87% FeO, 51·89% MgO, 1·3% F, H2Ocalc 1·50%, and total 100·44%. Optical data, density, and unit cell dimensions are also presented. Of magmatic occurrences, titaniferous clinohumite has otherwise only been reported in certain kimberlites and carbonatites.
OriginalsprogEngelsk
Sider (fra-til)99-101
Antal sider3
TidsskriftMineralogical Magazine
Vol/bind42
Udgave nummer321
DOI
StatusUdgivet - 1978
Udgivet eksterntJa

Emneord

  • Clinohumite

Programområde

  • Programområde 4: Mineralske råstoffer

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