Vivianite amber greenish brown modified rhombic/hexagonal crystals

greenish brown modified rhombic/hexagonal crystals of Siderite which are sitting atop crystals of lustrous

Viloco (sometimes called Araca) for many years has stood as one of the top Cassiterite localities in the world

This piece is from the type locality for Vauxite

and certainly better than most from this locality

Vivianite amber greenish brown modified rhombic/hexagonal crystalsThese Vivianite crystals have, without question, the best luster and often gemminess of any Vivianite specimens to date from this country, or virtually any other country. Another outstanding feature is the wonderful color contrast between the vivid emerald green of the Vivianite and the altered red sandstone matrix. These pieces have what I think is some of the best matrix for these crystals from Bolivia. It's not completely unstable like decomposing