Rollfront

Uranerz Rollfront in Dakota Sandstein; Untere Kreide;
Turkey Creek Watergap, SE Morrison, Colorado. Der schwarze Rand ist Uraninit. This is a remarkable example of a uranium roll front deposit, located at the Turkey Creek Watergap southeast of the town of Morrison, Colorado. It is hosted in quartzose sandstones of the J Sandstone of the South Platte Formation (Dakota Group, Lower Cretaceous). The black rim is composed of uraninite (UO2 - uranium dioxide). The larger outcrop has abundant yellowish and yellow-brown staining - some of that is native sulfur (S) and some is disseminated iron oxide. I have not heard or read any specific information regarding the mineral identity of the yellowish core of the uranium roll front shown above (I've been told that carnotite is not present at this site, but tyuyamunite is).

Copyright:

James St John

Beitrag:

Collector - 2016-02-18 23:23:11

Anzahl der Bildaufrufe:

198 (seit 14. Feb. 2008)

Lizenzinformation:

Frei kopierbar ohne Einschränkung (Public Domain)

Bildnummer:

1455834191

Zuordnungen

Geologisches Portrait/Lagerstätten/Sedimentogene Uranlagerstätten - in Lexikonseite

EXIF (Exchangeable Image File Format - Informationen mit dem Bild gespeichert)

PanoramaViewer (für Bilder im Panorama Format - JAVA erforderlich)