Retzian-(Ce) : Mn2+2Ce(AsO4)(OH)4, Jacobsite : Mn2+Fe3+2O4

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Copyright © Torbjörn Lorin

Retzian-(Ce) : Mn2+2Ce(AsO4)(OH)4, Jacobsite : Mn2+Fe3+2O4

Copyright © Torbjörn Lorin  - This image is copyrighted. Unauthorized reproduction prohibited.
Field of View: 4 mm

Excellent red retzian-(Ce) crystals on black jacobsite octahedra, Mossgruvan (Moss mine), Nordmark. From the Swedish Museum of Natural History, specimen g30313.

This Photo was Mindat.org Photo of the Day - 22nd Feb 2016

This photo has been shown 1565 times
Photo added:31st Jan 2016
Dimensions:1200x794px (0.95 megapixels)
Date/Time of Photo:12th Mar 2010 16:09:17
Camera:NIKON D700
Lens:0.0 mm f/0.0
Software:Adobe Photoshop Lightroom 6.3 (Windows)
Exposure time:1/3s
ISO speed:200

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Discuss this Photo

PhotosRetzian-(Ce) - Moss mine, Nordmark Odal Field, Filipstad, Värmland, Sweden

22nd Feb 2016 07:15 GMTother minerals

Very nice photo!

But it would be nice to know what the black octahedra are on which the retzian-(ce) is grown.

22nd Feb 2016 08:49 GMTJohan Kjellman Expert

ought to be jacobsite


22nd Feb 2016 13:13 GMTErik Jonsson

Yes - those are euhedral jacobsite crystals, as is characteristic for the retzian-bearing material from Mossgruvan. Very nice photo of a very nice example(sample)!

22nd Feb 2016 15:14 GMTUwe Kolitsch Manager

Photo captions updated.

22nd Feb 2016 16:22 GMTTorbjörn Lorin

Thanks for updating information.

I have some more information from Jörgen Langhof, at the Swedish Museum of Natural History, that I haven´t updated yet. I recieved it for a couple of days ago;

On a note from 1906, when Gustaf Flink just had started his occupation at the museum, he wrote that "The specimen was found in the doublet material"

(Jörgen Langhof believes that the material was collected in the later half of 19:th century.)
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