… about 800 m eastnortheast the Pinge in Altenberg and approx. l, 5 km northwest the city Geising the basaltic summit of the Geisingberges rises. At the southern foot of the mountain, which rises about 50 m steeply over the less strongly bent environment, small  dumps and trenches in the proximity of the edge of forest, which were probably undertaken on red iron ore, are originated. On the dumps it is possible to find occasionally light red colored banded agate up to 0,5 - 1 cm width in veins, that are surrounding frequently hostrock-relicts...

source: Reiner Haake “Achate sammeln in Deutschland - Teil 1, ein praktischer Führer zu den Achatvorkommen in Sachsen, Thüringen, Brandenburg und Sachsen-Anhalt” Bode Verlag, Haltern