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Collection of Minerals and Fossiles Granzer

 

tridymite, xx bis 6 mm tridymite, detail 5 cm tridymite, detail 7 mm tridymite, detail 7 mm cristobalite, detail 7 mm
 
Gerhard Granzer
Markt 16, 3365 Allhartsberg
 tel:+43 7448/3003
Allhartsberg, January 2005