radioactive mineral photos.. post them!!

Here is a polished "Gummite" specimen - I hope the lapidary washed his hands well, as it is pretty hot. 7 x 9 cm. An old specimen from H.W.H Stillwell, Rockville Centre, New York with a price of $4.50. Location: Grafton, New Hampshire


Edited 1 time(s). Last edit at 08/16/2012 09:24PM by Terry Burtzlaff.

Orange-Yellow Vandendriesscehite Crystals - Uraninite and Uranophane(Yellow).
FOV: 4 x 4 mm.
From Rich Uranium nodule of "Ángel" Mine Pegmatite, Sierra de Comechingones, Merlo, Province of Córdoba, Argentina.
Collected in 1978.

The "Gummite" of Mine "Ángel" is actually Vandendriesscheite (Pb1, 5 (UO2) 10 O6 (OH) 11 · 11H2O) and appears in these pegmatites as a result of the weathering of Uraninite, about the same in aggregate micro crystalline orange yellow to yellowish brown and glossy adamantine.
Chemical Analysis of "Gummite" (Vandendriesscheite) variety orange yellow:
SG: 4.1
Lost to Red: 8.80%
Insoluble: 3.04%
UO2: 0.81%
UO3: 80.97%
ThO2 and Rare Earth: 2.15%
PbO: 5.20%
CaO: Traces.
P2O5: Traces.



Edited 2 time(s). Last edit at 08/17/2012 02:11AM by Raúl Jorge Tauber Larry.

Meta-ankoleite - 7 x 5 cm - Arcu su Linnarbu, Capoterra, Cagliari, Sardinia, Italy - coll. and photo Antonio Gamboni :

[www.mindat.org]

Dewindtite(canary-yellow crystals) on Quartz.
(Known and mentioned as Renardite).
FOV: 4 x 3.5 mm.
From "Ángel" Mine Pegmatite, Sierra de Comechingones, Merlo, Province of Córdoba, Argentina.
Collected in 1978.

Microcrystals crust of Meta-Autunite with high fluorescence on mud-tuff.
Specimen size: 3.4 x 2 x 1 cm.
It has registered an average of 1600 CPM on my Digital Geiger Counter.
From Uranium Deposit "Los Adobes", Paso de Indios Department, Province of Chubut.
Collected in 70´s.

Phosphuranylite, Meta-autunite(Fluorescent) on mud-tuff.
Specimen size: 11.4 x 4.9 x 3 cm.
It has registered an average of 3000 CPM on my Digital Geiger Counter.
From "Los Adobes" Uranium Deposit.
Collected in 70´s.

Uraninite(Var: Pitchblende), Zeunerite, Metazeunerite clay-shale included.
Specimen size: 5.5 x 4.8 x 3 cm.
It has registered an average of 6000 CPM on my Digital Geiger Counter.
From La Esperanza Mine, Iruya Department, Province of Salta, Argentina.
Collected in 1977.

Monazite(Ce) crystals scattered with Uraninite(Var:Pitchblende), fluorescent Autunite, Limonite and Muscovite, pinched in igneous-metamorphic array.
From "San Santiago" Mine, Jagüe District, General Sarmiento Department, Province of La Rioja, Argentina.
Specimen size: 10 x 5.3 x 4.5 cm.
It has registered an average of 3100 CPM on my Digital Geiger Counter.
Collected in 1978.

Monazite (Ce).
[(Ce,La,Nd,Th)(PO4)]
Crystal size: 5 x 3 x 3 mm.
From San Santiago Mine, Jagüe District, General Sarmiento Department, Province of La Rioja, Argentina.
Collected in 1978.

Thorogummite - Thorite.
Yellow Thorogummite on Thorite altered.
Field View: 3 x 3 mm.
From "Rangel" Mine, Sierra de Rangel, La Poma Department,Province of Salta, Argentina.
Collected in 1978.

Thorite - Thorogummite.
Thorite Crystals and Yellow Thorogummite.
Field View: 3 x 3 mm. From "Rangel" Mine, Sierra de Rangel, La Poma Department,Province of Salta, Argentina.
Collected in 1978.

Thorite Crystal has 0.5 mm.

Thorite - Thorogummite.
Black Glassy Thorite altering to Yellow Thorogummite.
Specimen size: 2.4 x 1.5 x 1 cm.
From "Rangel" Mine, Sierra de Rangel, La Poma Department, Province of Salta, Argentina.
Collected in 1978.




Edited 1 time(s). Last edit at 08/19/2012 01:42PM by Raúl Jorge Tauber Larry.

Allanite(Ce) with a little Allanite(Nd) just below surface.
Specimen size: 6.7 x 4.1 x 2.3 cm.
From Kingman Feldspar Quarry, Kingman area, Mohave County, Arizona, U.S.A.

Allanite(Nd) .
Specimen size: 2.7 x 2.2 x 1.5 cm.
From Kingman Feldspar Quarry, Kingman area, Mohave County, Arizona, U.S.A.

Uraninite(Var: Pitchblende) , Carnotite, Autunite.
Specimen size: 5.5 x 3.4 x 1.8 cm.
Banded Pitchblende in sandstone cover and enriched with Carnotite and fluorescent Autunite.
Strongly radioactive. It has registered an average of 32,000 CPM on my Digital Geiger Counter. This is one of the most radioactive in my collection.
From "Huemul" Deposit, “Pampa Amarilla” District, Malargüe,Province of Mendoza, Argentina.
Collected in 1970.

Crystals of Zircon with Uraninite and Uranophane.
FOV: 15 x 9 mm. Crystals have 2 mm.
From Rich Uranium nodule of "Ángel" Mine Pegmatite, Sierra de Comechingones, Province of Córdoba, Argentina.
Collected in 1978.

Uranophane - Topaz.
FOV: 5.2 x 3.5 mm. Transparent Topaz crystal has 2 mm length.
From Rich Uranium nodule of "Ángel" Mine Pegmatite, Sierra de Comechingones, Merlo, Province of Córdoba, Argentina.
Collected in 1978.

Maggie,

I think your large thorite is superb.

Tony Albini

Thanks, Tony - that was quite the day, finding that piece - Reiner's whoops were heard throughout the woods.

It now resides in our friend's collection - Tim likes big Ontario specimens.

Maggie

Here's my latest:
A nice specimen of Boltwoodite!