PORTLANDITE from Germany * TOP THUMBNAIL SPECIMEN * 2,7 cm

Description

Portlandite
Caspar Quarry, Bellerberg, Ettringen, Vordereifel, Mayen-Koblenz District, Rhineland-Palatinate, Germany
This is a great group of rare Ca-hydroxyde mineral portlandite with typical colorless, platy crystals with slightly leached surfaces. Associated with white thaumasite
The specimen
size 4.2 cm x 2.7 cm x 2.4 cm
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I’m a professional geologist/mineralogist, with analytical background. Many of my minerals were checked by x-ray diffraction and energy dispersive spectrometry. Some of my specimens comes with the documentation of the analysises.
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