Radioactive minerals occurrences in ilum granite, district Swat, North West, Pakistan. | [Proceedings of 5th Pakistan Geological Congress • 2007]

Author(s):

1. Jamil Ahmad: Pakistan Atomic Energy Commission, Regional Exploration Office, Peshawar University Campus, Peshawar, Pakistan

2. Abdul-Khaliq: Pakistan Atomic Energy Commission, Regional Exploration Office, Peshawar University Campus, Peshawar, Pakistan

3. Ahmad Qadir: Pakistan Atomic Energy Commission, Regional Exploration Office, Peshawar University Campus, Peshawar, Pakistan

4. Shaheen Iqbal: Pakistan Atomic Energy Commission, Regional Exploration Office, Peshawar University Campus, Peshawar, Pakistan

Abstract:

Scores of radioactive anomalies have been explored in Ilum granite gneiss and younger tourmaline granite. Generally, the radioactive anomalies of Ilum granite and its environment can be divided into vein, supergene and hydrothermal types. Each type has its own geological characteristics and associated radioactive minerals. The radioactive veins type has been further divided into thorium-Rare Earth Elements vein type and uranium-Rare Earth Elements vein type. The uranium-Rare Earth Elements veins type is associated with tourmaline granite with pyrochlore, davidite` and ellsworthite as radioactive minerals. The thorium-Rare Earth Elements veins type is associated with coarse-grained granite gneiss with thorite, monazite and thorogummite as radioactive minerals. Most of these veins are feldspathic to pegmatitic, grading into quartz veins at places. They are mostly parallel to regional foliation and lack cross cutting relation. The veins system associated with granite gneiss has substantial lateral extension but little vertical extension. The veins system associated with tourmaline granite is well developed and has reasonable lateral and vertical extensions. The supergene type is associated with younger tourmaline granite having secondary mineralization in the form of torbernite and metatorbernite in vertical fracture. Hydrothermal type is restricted to some crosscutting microfractures along shear zones at Shoprang area. The data show that Ilum granite complex hosts score of radioactive anomalies of magmatic/ pegmatitic/ pneumatolytic stage, nevertheless, it lacks significant late stage hydrothermal and supergene processes, which are considered a decisive factor in the formation of viable uranium deposit.

Page(s): 141-156

DOI: DOI not available

Published: Journal: Proceedings of 5th Pakistan Geological Congress , Volume: 0, Issue: 0, Year: 2007

Keywords:

Keywords are not available for this article.

References:

References are not available for this document.

Citations

Citations are not available for this document.

Citations

Downloads

Views