Heulandite Subgroup : (Na/Ca/K)5-6[Al8-9 Si27-28 O72]· nH2O
Mindat locality:
Photo added to mindat.org
“Lustrous iron rose of 2.8 cm in diameter, associated with heulandite crystals.
Christian Bracke Collection.
”
Christian Bracke - 17th April 2007
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