Gröppendorf Kaolin Mine

The German kaolin mines produce a unique group of thundereggs, clearly from the same geology, yet showing some distinct differences as well. They are characterised by an extremely weathered and crumbly matrix that is heading for white. Often incomplete or damaged, they can still be extraordinarily beautiful. The Gröppendorf specimens are more prone to solid agate than the others (that I have seen), especially a really striking white that, at its best, can stand alongside any thunderegg in the world. Also, the matrix is significantly more weathered than Querbitzsch, sometimes reaching the texture of crumbly chalk.

The kaolin egg deposits in this geological area are also one of the sources of the Saxony gravelpits, especially Bokelwitz and Otterwisch.

Gröppendorf Thunderegg with White Agate	Gröppendorf Thunderegg with Complex Clear Agate	Tiny Gröppendorf Thunderegg with Waterlines
Gröppendorf Thunderegg with Spectacular White Core	Strange Gröppendorf Thunderegg with Decayed Matrix and Complex Agate Core	Beautiful Gröppendorf Thunderegg with White and Grey Agate and a 'Floor'
Small Gröppendorf Thunderegg with a Very Complex Structure	Gröppendorf Thunderegg with Pseudomorphs	Beautiful Classic Gröppendorf Thunderegg
Gröppendorf Thunderegg with Complex White Core	Simple Gröppendorf Thunderegg with Crystal	Complex Gröppendorf Thunderegg with Darker Core
Beautiful Gröppendorf Thunderegg with Amethyst	Gröppendorf Thunderegg with Classic White Core	Gröppendorf Thunderegg with Dense Agate Mesh
Gröppendorf Thunderegg with Simple Grey Agate	Gröppendorf Thunderegg with Extremely Dense Pseudomorphs	Gröppendorf Thunderegg with Mineralised Core
Gröppendorf Thunderegg with a Rare Example of Warm Colours	Beautiful Gröppendorf Thunderegg with Amethyst