Calc-silicate minerals from the Dartmoor Granite

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Authors:Alderton, D. H. M.
Author Affiliations:Primary:
R. Holloway and Bedford New Coll., Dep. Geol., Egham, United Kingdom
Volume Title:Mineralogical Magazine
Source:Mineralogical Magazine, 52 Part 4(367), p.527-529. Publisher: Mineralogical Society, London, United Kingdom. ISSN: 0026-461X
Publication Date:1988
Note:In English. 19 refs.; illus. incl. 1 table
Summary:A biotite-muscovite granite from near Birch Tor and Vitifer Sn-Fe mines in central Dartmoor contains twice the normal amounts of Sn for a typical biotite granite and has epidote, garnet and titanite as accessory minerals typically included within the biotite. No Sn was detected in the epidote or garnet (andradite) but the titanite was found to have SnO2 < 0.01 to 4.61 wt.%; a mean of 22 analyses gave SnO2 1.05%. No correlation was found between Ti and Sn, but the substitution Sn4+ + Fe2+ reverse= 2(Fe3+,Al3+) is considered possible. [R.A.H.]
Subjects:Biotite; High temperature; Metagranite; Metaigneous rocks; Metamorphic rocks; Mica group; Mineral composition; Petrology; Sheet silicates; Silicates; Temperature; Dartmoor; Devon England; England; Europe; Great Britain; United Kingdom; Western Europe; Southwestern England
Abstract Numbers:88M/6003
Record ID:1989002753
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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