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Yellow uraninite?

Posted by Reiner Mielke  
Reiner Mielke January 12, 2018 11:09PM this is not uraninite.
David Von Bargen January 13, 2018 09:42AM
That is making the assumption that the yellow material in the photo is the uraninite. There is a lot of black material in the photo and without an adequate descriptive text or listing of multiple minerals, one doesn't know what area is supposed to be the uraninite.
Rui Nunes January 13, 2018 06:47PM
It's an old specimen/poor photo and will try obtain a better one tomorrow. Yes, the indication for uraninite is the black material. The locality is (Osamu Utsumi mine, Campo do Cercado, Caldas, Poços de Caldas alkaline complex, Minas Gerais, Brazil).

Edited 1 time(s). Last edit at 01/13/2018 06:48PM by Rui Nunes.
Keith Compton January 17, 2018 09:11AM

Which is one reason why we like to see a brief description of what we can see in the photo, i.e.: which mineral is which etc. This is a never ending issue for us.

I was going to add add a frivolous comment that it was probably "yellow-cake" but decided against it ... but hey.

Rui Nunes January 17, 2018 09:37AM
Yes, I agree, I like to see a brief description of what I can see in the photo too... but I did not find it funny.
Reiner Mielke January 17, 2018 01:03PM
It would be worth while getting the orange mineral analyzed as there is nothing listed there that matches what it looks like. It may be a new species for the locality.
Rui Nunes January 17, 2018 11:57PM
Maybe yes, but doing mineral analysis here is not easy...this yellow material will stay for a next opportunity
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