Titre du document / Document title

Foshagite and hillebrandite from skarn xenoliths of Ioko-Dovyrensky massif

Auteur(s) / Author(s)

ZADOV A. E. ; PERTSEV N. N. ; BELAKOVSKY D. I. ; CHUKANOV N. V. ; KUZNETSOVA O. Yu. ;

Résumé / Abstract

The rare calcium-hydrosilicates foshagite, Ca4Si³O⁹(OH)², and hillebrandite, Ca²SiO³(OH)², have been found among skarns developed within large calcite-dolomite xenoliths included inside loko-Dovyrensky gabbro-peridotite layered massif (Northern Baikal region). The skarns containing those hydrosilicates occur in the contact with silicified chert nodules inside the primary carbonate xenoliths. The calcium-hydrosilicates are the secondary products of a regressive hydrothermal alteration of minerals in certain skarn zones, such as the merwinite one with monticellite, spurrite and calcite. Foshagite and hillebrandite, together with associated minerals, have been studied using EMP, X-ray- and IR spectroscopy, derivatography and optic methods.

Revue / Journal Title

Zapiski Vserossijskogo mineralogičeskogo obŝestva   ISSN 0869-6055 

Source / Source

2004, vol. 133, n^o1, pp. 73-83 [11 page(s) (article)]

Langue / Language

Russe

Editeur / Publisher

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

Localisation / Location

INIST-CNRS, Cote INIST : 4673, 35400011431856.0070