Geochemistry and petrography of U-Th-Y mineralisation in Alkali Feldspar granite (Alaskite) dykes around Dhanota, Mahendragarh District, Haryana, India

Authors
Sharma, GS Purohit, RK Roy, M Sengupta, B Singh, J
Citation
Gs. Sharma et al., Geochemistry and petrography of U-Th-Y mineralisation in Alkali Feldspar granite (Alaskite) dykes around Dhanota, Mahendragarh District, Haryana, India, J GEOL S IN, 55(2), 2000, pp. 189-196
Citations number
8
Categorie Soggetti
Earth Sciences
Journal title
JOURNAL OF THE GEOLOGICAL SOCIETY OF INDIA
ISSN journal
00167622 → ACNP
Volume
55
Issue
2
Year of publication
2000
Pages
189 - 196
Database
ISI
SICI code
0016-7622(200002)55:2<189:GAPOUM>2.0.ZU;2-4
Abstract
Radioactive alkali feldspar granite (alaskite) occurs as dykes within the P roterozoic granite gneiss around Dhanota. Samples have assayed 0.011 to 0.1 6% U3O8 and 0.005 to 0.16% ThO2. Yttrium values range from 250 to 800 ppm. Uranothorite occurs in association with zircon, xenotime, magnetite, hemati te, sphene and goethite. The U-Th-Y mineralisation in alaskites of Dhanota is disseminated syn-magmatic intrusive type.