Progress report on geologic studies of the Ranger orebodies, Northern Territory, Australia: USGS Open-File Report 82-936 - Couverture souple

Nash, J T; Frishman, David

 
9781288889891: Progress report on geologic studies of the Ranger orebodies, Northern Territory, Australia: USGS Open-File Report 82-936
Couverture souple
ISBN 10 : 1288889895 ISBN 13 : 9781288889891
Editeur : BiblioBazaar, LLC, 2013

Synopsis


The Ranger No. 1 and No. 3 orebodies contain about 124,000 tonnes U3O8 in highly chloritized metasediments of the lower Proterozoic Cahill Formation within about 500 m of the projected sub-Kombolgie Formation unconformity. In both orebodies, oxidized and reduced uranium minerals occur chiefly in quartzose schists that have highly variable amounts of muscovite, sericite, and chlorite. The effects of several periods of alteration are pervasive in the vicinity of orebodies where biotite and garnet are altered to chlorite, and feldspars to white mica or chlorite. Oxidized uranium minerals, associated with earthy iron oxides, occur from the surface to a depth of about 60 m. Below the oxidized zone, uranium occurs chiefly as uraninite and pitchblende disseminated through thick sections of quartz-chlorite-muscovite schist and has no apparent association with graphite or sulfides. In fact, graphite is rare and sulfides are generally low in abundance (

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Éditeur
BiblioBazaar, LLC
Date d'édition
2013
Langue
anglais
ISBN 10 
1288889895
ISBN 13 
9781288889891
Reliure
Broché
Nombre de pages
34
Coordonnées du fabricant
non disponible
Personne responsable
non disponible