Barite

specimen number:
9302342

location:
Rockenberg, Wetteraukreis, Darmstadt, Hesse, Germany

description:

Classic specimen for the species and locality, a cluster of sand encrusted bladed barite crystals without matrix. There are no points of attachment, this is in good condition all around.

Rockenberg is a historic municipality in the Wetteraukreis of Hesse, Germany, located north of Frankfurt am Main, with historical roots dating back to early medieval records and the construction of its notable hilltop castle. Geologically, the area features tertiary and quaternary sedimentary deposits, including extensive sand layers situated within the Wetterau basin. The locality is world-famous among mineral collectors for producing unique barite specimens known locally as Rockenberg roses, or Rosensteine. These distinctive rose-like, globular, or plate crystal aggregates formed very slowly over millions of years as aqueous barium-rich solutions crystallized within porous sand strata, incorporating significant amounts of local quartz sand grains into their structure to create striking, flower-like formations that have been gathered from local sand pits for generations.

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