Clinoptilolite-Ca : Ca3(Si30Al6)O72·20H2O
Mordenite : (Na2,Ca,K2)4(Al8Si40)O96·28H2O
Mindat locality:
Photo added to mindat.org
“4x6 cm. By exchange from Rudy Tschernich in the 1970´. Now collection of Trevor Boyd.”
Volker Betz - 20th July 2008
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