Titre du document / Document title

Bartonite from Lovozero massif (Kola peninsula)

Auteur(s) / Author(s)

PEKOV I. V. ; SHCHERBACHEV D. K. ; KONONKOVA N. N. ;

Résumé / Abstract

Bartonite, a potassium iron sulfide repprsented by its chlorine-free variety, was, for the first time in Russia, found at Kedykverpakh Mt, in Lovozero alkaline massif, Kola Peninsula. The compact segregation of bartonite (as large as 13 X 6 mm) was detected occurring in a natrolite vein with ussingite, trona, etc. Chemical composition, X-ray powder pattern data, reflectance values and microindentation hardness of the Lovozero bartonite are given in the paper. Its empirical formula is: (K^5.48Na^0.06Tl^0.04)^Σ5.58Fe^21.48S^26.94. Tetragonal unit cell parameters are: a = 10.448(1), c = 20.670(4). Å. The phenomenon under discussion is the fractionation of alkali elements in hyperagpaitic pegmatites.

Revue / Journal Title

Zapiski Vserossijskogo mineralogičeskogo obŝestva   ISSN 0869-6055 

Source / Source

2003, vol. 132, n^o3, pp. 97-101 [5 page(s) (article)]

Langue / Language

Russe

Editeur / Publisher

Nauka, Sankt-Peterburg, RUSSIE, FEDERATION DE  (1992) (Revue)

Localisation / Location

INIST-CNRS, Cote INIST : 4673, 35400011679462.0100