Heulandite - Rat's Nest Claim, USA - 7.0 x 7.8 cm
Mineral: Heulandite
Locality: Rat's Nest Claim, Challis, Bay Horse District, Custer County, Idaho, USA
Dimensions: 7.0 x 7.8 cm

Description: Pale peach-colored heulandite crystals lying on a bed of white mordenite on altered andesite.