Thomsonite-Ca : NaCa2[Al5Si5O20]·6H2O
Pectolite : NaCa2Si3O8(OH)
6.1cm x 5.7cm x 3.6cm
Photo added to mindat.org
“Tufted thomsonite clusters to 3.7 cm on pectolite formerly in the R. Kosnar and S. Pochek collections.”
Frank A. Imbriacco III - 16th June 2014
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