<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)
| Identifer | oai:union.ndltd.org:mcmaster.ca/oai:macsphere.mcmaster.ca:11375/18428 |
| Date | 05 1900 |
| Creators | Kretschmar, Ulrich H. |
| Contributors | None |
| Source Sets | McMaster University |
| Language | en_US |
| Detected Language | English |
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