Resumé
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.
Originalsprog | Engelsk |
---|---|
Sider (fra-til) | 99-101 |
Antal sider | 3 |
Tidsskrift | Mineralogical Magazine |
Vol/bind | 42 |
Udgave nummer | 321 |
DOI | |
Status | Udgivet - 1978 |
Udgivet eksternt | Ja |
Emneord
- Clinohumite
Programområde
- Programområde 4: Mineralske råstoffer