Kruijenite : Ca4Al4(SO4)F2(OH)16·2H2O, Ettringite : Ca6Al2(SO4)3(OH)12·26H2O, Calcite : CaCO3

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Copyright © Ko Jansen
minID: U1E-F0M

Kruijenite : Ca4Al4(SO4)F2(OH)16·2H2O, Ettringite : Ca6Al2(SO4)3(OH)12·26H2O, Calcite : CaCO3

Copyright © Ko Jansen  - This image is copyrighted. Unauthorized reproduction prohibited.
Field of View: 1.61 mm

KRUIJENITE crystals yellow/greenish . Kruijenite is accepted by IMA sept. 2018-057 , first found in Feuerberg by Cor Kokke, further is possible sixsided Ettringite crystals and Calcite material , p.w. 1.61 mm , Coll. Cor Kokke , Photo Ko Jansen.

Collected: 2016 by Cor Kokke

This photo has been shown 425 times
Photo added:9th Oct 2018
Dimensions:1825x1540px (2.81 megapixels)
Date/Time of Photo:14th Feb 2017 10:18:28
Camera:NIKON E4500
Software:Adobe Photoshop Elements 10.0 Windows
Exposure time:1/154s
Focal Length:10mm
Focal Length (35mm film equivalent):49mm
ISO speed:100
View Ko Jansen's Photos View Kruijenite Gallery

Discuss this Photo

PhotosCalcite - Feuerberg, Hinterweiler, Daun, Vulkaneifel, Rhineland-Palatinate, Germany

23rd Nov 2018 21:45 GMTUwe Kolitsch Manager

Can someone confirm that the green-yellow mineral is in fact kruijenite?

24th Nov 2018 11:26 GMTGuenter Blass

Hallo Uwe,

es gibt noch einiges an Unklarheiten. Ich bin nicht 100 % sicher welche xx der Kruijenit sind. Die meisten von mir gemachten EDX-Analysen zeigen für das gelbe Mineral ein Ca-Mg-Al-Silikat. Ich werde noch einmal diese gelben xx per EDX untersuchen lassen. Eine SXRD wäre natürlich sicherer.

Persönliche Mitteilung Nikita Chukanov (the needles are kruijenite, and the light green platelets are an unknown Ca-Mg-Al silicate (possibly, a new mineral, a phyllosilicate).

The formula of kruijenite is Ca4Al4(SO4)F2(OH)16*2H2O.


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