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Gonnardite : (Na,Ca)2(Si,Al)5O10·3H2O, Hielscherite-Thaumasite series

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Copyright © Yannick Verbelen 2013
 
 
 
minID: 4YU-EM1

Gonnardite : (Na,Ca)2(Si,Al)5O10·3H2O, Hielscherite-Thaumasite series

Copyright © Yannick Verbelen 2013  - This image is copyrighted. Unauthorized reproduction prohibited.
Dimensions: 32 mm x 21 mm x 14 mm
Field of View: 28 mm

Thumbnail Graulay specimen. The white globular aggregates with radial structure are Gonnardite (with credits to Günter Frenz for visual determination). White aggregate in the upper right corner is Hielscherite-Thaumasite series.

This photo has been shown 594 times
Photo added:25th Nov 2013
Dimensions:1678x1100px (1.85 megapixels)
Date/Time of Photo:25th Nov 2013 18:03:01
Camera:CANON EOS 100D / Rebel SL1 / Kiss X7
Software:Paint.NET v3.5.11
Exposure time:1/200s
Aperture:f/14.0
Focal Length:55mm
ISO speed:400

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Discuss this Photo

PhotosHielscherite - Graulay, Hillesheim, Eifel, Rhineland-Palatinate, Germany

8th May 2016 19:20 BSTGünter Frenz Expert

Hi,


the label "Hielscherite" on this picture is misleading. The main mineral on this picture is Gonnardite (white globular aggregates with radial structure when broken). In the upper right corner is another white aggregat, that could be the one on the label but should be named "Thaumasite-Hielscherite-series" as long as there is no analysis.


The associated detail-picture is even more misleading as the Thaumasite-Hielscherite aggregate is in the upper left corner way out of focus. On this picture also Phillipsite or maybe Flörkeite is visible, which is a common association for this locality.


Regards


Günter

8th May 2016 19:41 BSTUwe Kolitsch Manager

Message sent.

17th Jun 2016 20:11 BSTGünter Frenz Expert

Hi,


did you get any reaction after about 6 weeks?


Regards


Günter

18th Jun 2016 22:04 BSTUwe Kolitsch Manager

No. Have now sent a normal email in case the PM landed in a spam folder.

11th Aug 2016 13:03 BSTYannick Verbelen

Hi Günter, Uwe,


Thank you for the visual identification of the misidentified minerals in the pictures, I have corrected the mineral descriptions as per your recommendation, with proper credit of course. Both the specimen view and detail picture have been updated.


My apologies for the (very) late response, I have gone through personal difficulties in the past months which have prevented me from spending any time on the hobby.


Best regards,


Yannick
 
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