Calcite on Stilbite from Malmberget, Norrbotten, Sweden.
Size: 52x90x62 mm (210 gr.)
Thin leaves of white Calcite on a bed of small yellow Stilbite crystals. There are Stilbite crystals everywhere, except the underside. The specimen is damage free.
I am not sure when it was found, but my father had good friends in the Malmberget where he traded. I assume it is about 20 years old.