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A Study Of The Opaque Minerals In The Whitestone Anorthosite, Dunchurch, Ontario

<p> A textural and mineralogical study of the magnetite, hemoilmenite
and minor sulfide phases of the Whitestone anorthosite,
Dunchurch, Ontario, was carried out. The composition of magnetite
and hemo-ilmenite was determined by chemical analysis, X-ray diffraction
and electron probe microanalysis. A modification of the
solvus shape in the hematite-ilmenite system consistent with the
composition of hemo-ilmenite lamellae, as well as a mechanism for
formation of metamorphic magnetite porphyroblasts from ferrianilmenite
is proposed. Buddington and Lindsley's experimental data
cannot be used directly to obtain f02 and T of formation of the
anorthosite because compositions fall in the highly oxidizing and
as yet undetermined portion of their diagram. </p> / Thesis / Master of Science (MSc)

Identiferoai:union.ndltd.org:mcmaster.ca/oai:macsphere.mcmaster.ca:11375/18428
Date05 1900
CreatorsKretschmar, Ulrich H.
ContributorsNone
Source SetsMcMaster University
Languageen_US
Detected LanguageEnglish

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