20hhdw.rs ((ANALCIME, NATROLITE, COPPER on CALCITE)), $65 MINIMUM BID, Copper County, Houghton County, Michigan, 7 x 7 x 5 cm, Cabinet, | |
Plentiful white opaque Analcime crystals with only minor Copper. Center left has long small acicular colorless Natrolite. Center right has larger acicular Natrolite lying on the surface of the specimen. The matrix on the underside of the specimen is a large cleaved Calcite making the contact and how the specimen was removed easily by the Calcite cleavage plain. ex Dan Wilson MD collection. ex Rob Lavinsky specimen. |