An occurrence of monazite in Puumala, eastern Finland | Zendy

Ilmari Haapala | Zendy; P. Ervamaa | Zendy; Anita Löfgren | Zendy; P. Ojanperä | Zendy

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An occurrence of monazite in Puumala, eastern Finland

Author(s) -

Ilmari Haapala,

P. Ervamaa,

Anita Löfgren,

P. Ojanperä

Publication year - 1969

Publication title -

bulletin of the geological society of finland

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.4

H-Index - 24

eISSN - 1799-4632

pISSN - 0367-5211

DOI - 10.17741/bgsf/41.013

Subject(s) - monazite , geology , geochemistry , zircon

A monazite occurrence consisting of three monazite-bearing biotite-rich veins is described. The veins have pegmatitic affinities but are very inhomogeneous. They are located in Precambrian migmatitic cordierite-garnet gneiss or between gneiss and pegmatite. In biotite-rich accumulations the monazite content may be about 10 volume per cent. The chemical analysis, unit cell dimensions, optical properties, magnetic susceptibility and specific gravity of monazite are presented. A comparison is made with monazite deposits of migmatite type.

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