Dörrkopf Thundereggs
Admittedly somewhat hard to distinguish from other German locations, though one characteristic is a distinct blotchieness to the matrix.
Small and Beautiful Dörrkopf Thundereggs With Agate Band
Larger Quartz Dörrkopf Thunderegg
Countries:
USA - Canada - Alaska - Mexico - Argentina - Peru - France - Germany - UK - Poland - Greece - Turkey - Romania - Bulgaria - Slovakia - Kazakhstan - Uzbekistan - Russia - Japan - Ethiopia - Iran - Australia - Unknown