Mineral: Mordenite and Heulandite
Locality: Rat's Nest Claim, Challis, Bay Horse District, Custer County, Idaho, USA
Dimensions: 5.8 x 5.3 x 3.6 cm

Description: A divergent group of finely acicular white mordenite crystals hosting two compound crystals of salmon-pink heulandite. Collected by John Cornish in April/May of 2022.

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