Sadanagaite : {Na}{Ca2}{Mg3Al2}(Si5Al3O22)(OH)2, Graphite : C, Corundum (Var: Ruby) : Al2O3, Phlogopite : KMg3(AlSi3O10)(OH)2, Pyrrhotite : Fe1-xS

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Other keyboard shortcuts:

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Summary of all keyboard shortcuts

1Fit image to screen
2Fill screen with image
3Switch to 3D display of stereo pair
4Switch left/right images in 3D mode
5Display at full resolution
<, >Make background darker/lighter
H or ?Show/hide this help page
PPlay/Pause Video or Animation
[, ]Backwards/forwards one frame (Animation only)
up arrowShow information box
down arrowHide information box
left arrowPrevious image/media page
right arrowNext image/media page
spaceHide/dim titles and buttons

Copyright © R. Lang 2018
minID: XQU-149

Sadanagaite : {Na}{Ca2}{Mg3Al2}(Si5Al3O22)(OH)2, Graphite : C, Corundum (Var: Ruby) : Al2O3, Phlogopite : KMg3(AlSi3O10)(OH)2, Pyrrhotite : Fe1-xS

Copyright © R. Lang 2018  - This image is copyrighted. Unauthorized reproduction prohibited.
Dimensions: 116 mm x 45 mm x 50 mm

From the collection of Prof. Dr. Wolfgang Hofmeister comes this specimen consisting of white marble hosting pink ruby, black graphite flakes, some bronze coloured pyrrhotite, brown phlogopite and small aggregates of a translucent brown mineral that was analyzed and found to be Sadanagaite (originally as Magnesiosadanagaite, but this is classified in the Amphibole nomenclature as Sadanagaite since 2012). At one side of the specimen a slice was sawn off, this was one of the analyzed samples described in Hauzenberger, C.A., Walter, F., Hofmeister, W., Phan Tien, D. & Kienzl, N. (2005): Mineralogical, petrological and crystallographic investigations of two amphiboles from ruby and spinel bearing marbles, Luc Yen, Province Yen Bai, Vietnam.

This photo has been shown 280 times
Photo added:17th Jul 2018
Dimensions:2500x1810px (4.53 megapixels)
Date/Time of Photo:17th Jul 2018 12:56:41
Software:Adobe Photoshop CC 2018 (Windows)
Exposure time:1/20s
Focal Length:105mm
ISO speed:250

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