Lake Athabasca, Saskatchewan, Canada

Almost violet metallic mass associated with green Cu undetermined minerals FOV 3 x 2 mm Collection and photo Roberto Bosi

© Roberto Bosi

A nearly pure mass of dark brown massive nolanite, from the type locality. S183-23 1.5 cm sample. Excalibur Mineral Company specimen.

© 2008, JGW

6.0 x 2.7 x 0.9 cm. This polished slice shows thin veinlets of reddish-purple umangite (a rare copper selenide) associated with unidentified blue and green copper minerals. I have never seen another piece of this material. Ex. Josef Vajdák (Pequa Rare Minerals) specimen.

© Rob Lavinsky & irocks.com

6.0 x 2.7 x 0.9 cm. This polished slice shows thin veinlets of reddish-purple umangite (a rare copper selenide) associated with unidentified blue and green copper minerals. I have never seen another piece of this material. Ex. Josef Vajdák (Pequa Rare Minerals) specimen.

© Rob Lavinsky & irocks.com