Open AccessBlue cancrinite from South-East Greenland
Author(s) -
Aage Jensen,
Thorkild Nielsen
Publication year - 1994
Publication title -
rapport
Language(s) - English
Resource type - Journals
eISSN - 2597-2944
pISSN - 0418-6559
DOI - 10.34194/rapggu.v161.8238
Subject(s) - albite , nepheline , sodalite , geology , geochemistry , precambrian , electron microprobe , nepheline syenite , mineralogy , paleontology , quartz , chemistry , biochemistry , zeolite , catalysis
Blue cancrinite intergrown with sodalite and albite has been found in nepheline syenite dykes in the Precambrian of South-East Greenland. Cabochons cut of the material show a blue colour with more or less pronounced aventurescence. Electron microprobe analysis and X-ray investigation have been carried out to establish the position in the cancrinite-vishnevite solid solution series. Trace elements have been determined by spectral analysis of the Greenland cancrinite as well as cancrinite from Litchfield Maine, USA and Bancroft. Ontario, Canada.