PreviousNext HEU3231 - HEULANDITE-Ca on MORDENITE $400.00 Locality Rats Nest Claim, near Challis; Custer County, Idaho, USA Dimensions 123mm x 117mm x 75mm Translucent pink coffin-shaped heulandite crystals averaging 13 mm tall, on a snow-white mordenite matrix. This is a very nice specimen with good color from North America’s premier location for heulandite. Collected by John Cornish. No damage.