Microcline
Andrzej II quarry, Żółkiewka, Gmina Strzegom, Świdnica County, Lower Silesian Voivodeship, Poland
Group of twinned feldspars from Strzegom, Poland; size 7,5 cm, found in April 2009.
Coll. "Spirifer" Geological Society.
Fot. J. Scovil.
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