This Torbernite specimen is from the Shinkolobwe uranium mine and shows two generations. The dark green crystals of torbernite are growing on lighter metatorbernite crystals. The Torbernite are transparent dark green crystals because the water is still present in the crystal structure. The Metatorbernite appears as light green, opaque crystals because most of the water is gone. The top crystals are covered with a very thin layer of Heterogenite what gives them a black appearance, most unusual: What is noticeable here is that the Torbernite is coated with Heterogenite that prevented its dehydration. The Metatorbernite was a first generation and had all the time to dehydrate. Also present on this specimen is a cluster of Curite crystals also covered with the Heterogenite. Shinkolobwe is the type locality for Curite.
Fundort: Shinkolobwe Mine (Kasolo Mine), Shinkolobwe, Central area, Katanga Copper Crescent, Katanga, Demokratische Republik Kongo (Fundort bei mindat.org)
Größe: 8.5 x 6 x 4.5 cm.
Date
before March 2010
date QS:P,+2010-03-00T00:00:00Z/7,P1326,+2010-03-00T00:00:00Z/10
Attribution: Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
You are free:
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
This work is free and may be used by anyone for any purpose. If you wish to use this content, you do not need to request permission as long as you follow any licensing requirements mentioned on this page.
The Wikimedia Foundation has received an e-mail confirming that the copyright holder has approved publication under the terms mentioned on this page. This correspondence has been reviewed by a Volunteer Response Team (VRT) member and stored in our permission archive. The correspondence is available to trusted volunteers as ticket #2010022810018255.