Hedenbergite From Vlastejovice, Bohemian Reg, Czech Republic- collectors piece <br> churchHedenbergite From Vlastejovice, Bohemian Reg, Czech Republic collectors piece Weight 180g Size 5cm by 5. 5cm Thickness 5cm Hedenbergite, is the iron rich end member of the pyroxene group having a monoclinic crystal system. The mineral is extremely rarely found as a pure substance, and usually has to be synthesized in a lab. Hedenbergite has a number of specific properties. Its hardness is usually between five and six with two cleavage plains and
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