Open AccessThe Lovozero minerals - nenadkevichite, gerassimovskite and tundrite - from Ilímaussaq, South Greenland
Author(s) -
Е. И. Семенов,
M.E Kazakova,
R.A Aleksandrova
Publication year - 1967
Publication title -
bulletin
Language(s) - English
Resource type - Journals
eISSN - 2597-2936
pISSN - 0105-3507
DOI - 10.34194/bullggu.v68.6605
Subject(s) - nepheline , sodalite , massif , kola peninsula , nepheline syenite , pegmatite , geochemistry , geology , chemistry , biochemistry , zeolite , catalysis
Nenadkevichite NaCaTiNbSi4O14.4H20, gerassimovskite NbTi(OH) 9 and tundrite Na2Ce2TiSiO8.4H2O, which until now have been found only in the Lovozero alkaline massif in the Kola peninsula have also been found in the nepheline-sodalite syenites of the Ilímaussaq massif (South Greenland). Nenadkevichite and gerassimovskite occur in hydrothermaI veins in the poikilitic sodalite syenites (naujaites) as alteration products of epistolite. Tundrite was found in pegmatites in nepheline syenites (kakortokites). A new formula of tundrite is suggested.