Ferroan wodginite from Ankole, south-west Uganda | Zendy

O. von Knorring | Zendy; Th.G. Sahama | Zendy; M. Lehtinen | Zendy

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Ferroan wodginite from Ankole, south-west Uganda

Author(s) -

O. von Knorring,

Th.G. Sahama,

M. Lehtinen

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/41.005

Subject(s) - geology

Well formed crystals of ferroan wodginite occur in the pegmatite called 'Nyanga 2' in Ankole, Uganda. The crystals invariably represent penetration twins. The unit cell parameters are: ao = 9.48 A, bo = 11.42A, c — 5.12 A, s — 90°30'. Space group: C2/c ( Cc ). The separation of the doublets 221—221 and 222—222 is less pronounced than in the manganoan varieties of wodginite described in literature. The wodginite crystals contain inclusions of tapiolite. Microprobe analyses of the wodginite and of the tapiolite inclusions are given.

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