Copper ("Spinel"-twins and crystals) Vivianite and it is often difficult

and it is often difficult to know where specimens are from because several mines in the area share the same vein system

crystallized

This particular specimen

Though lustrous and gemmy

From the "Alpine-type" collection of my father

Copper ("Spinel"-twins and crystals) Vivianite and it is often difficultThis beautiful specimen of Native Copper features a pleasing combination of defined "Spinel" twins and well formed crystals intergrown to create a display quality miniature. The piece is highlighted at the top by a wonderful dodecahedral crystal of Copper with both smooth well formed positive faces and skeletal or "hoppered" negative faces sitting atop an elongated group of "Spinel" twins which branch out along the length of the specimen. Each of the