Thomsonite-Ca : NaCa2[Al5Si5O20]·6H2O
Phillipsite-Ca : Ca3(Si10Al6)O32·12H2O
Photo added to mindat.org
“Nice 8mm thomsonite ball on phillipsite. Collection Z.Dvořák”
Petr Fuchs - 20th May 2014
Mindat.org Photo of the Day
Petr Fuchs - 4th June 2014
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