INCLUSION COMPOSITION IN MINERALS AND CRY STALLIZATION CONDITIONS OF RARE-METAL BEARING GRANITES OF HOMRAT-AKAREM (EGYPT)

Authors
SOLOVOVA IP BABANSKY AD FAUSI H RJABCHIKOV ID KONONKOVA NN
Citation
Ip. Solovova et al., INCLUSION COMPOSITION IN MINERALS AND CRY STALLIZATION CONDITIONS OF RARE-METAL BEARING GRANITES OF HOMRAT-AKAREM (EGYPT), Geohimia, (7), 1994, pp. 956-967
Citations number
15
Categorie Soggetti
Geosciences, Interdisciplinary
Journal title
Geohimia → ACNP
ISSN journal
00167525
Issue
7
Year of publication
1994
Pages
956 - 967
Database
ISI
SICI code
0016-7525(1994):7<956:ICIMAC>2.0.ZU;2-Z
Abstract
Melt, solid and fluid microinclusions in quartz of rare metal bearing granited are studied. P-T Parameters of main stages in granitic magma evolution containing fluorine (up to 0.5 mass % F), water (9-10 mass % H2O). These stages are characterised by the following parameters: 1) quartz crystallization at 640-degrees-C, and 8 kbar; 2) complete solid ification of the melt at 500-550-degrees-C; and 4-5 kbar; 5) microschl ieren aggregates in granites are crystallised at 300-degrees-C and 0.4 kbar. Magmatic origin of topaz and fluorite is evidenced.