this formation is often advertised as stibnite in agate because of the gray-looking crystals
The unimaginable heat caused quartz and the surrounding minerals (which then influence the color) to melt and mix
ein paar Stellen wirken unregulär gewachsen oder auch verheilt
which does have an internal tension line
Deutschland (genauere Angaben können wir leider nicht machen)
Calcit/e with 2. generation - Winterberg, Bad Grund, Harz Brazilian minerals this formation is often advertisedwunderschne skalenoedrische Calcit xx mit 2. Generation, was sie sehr filigran aussehen lie. Gre: 5 x 4,1 x 4 cm Herkunft: Winterbergsteinbruch, Iberg, Bad Grund, Harz, Deutschland beautiful scalenohedral calcite xx with 2nd generation, which made it look very delicate. Size: 5 x 4. 1 x 4 cm Origin: Winterberg quarry, Iberg, Bad Grund, Harz, Germany