Praborna Mine, Saint-Marcel, Aosta Valley, Italy
Praborna tunnels (right in the image) on the rocky slope. On the left, the collapsed wall containing tiny amounts of gold and uvarovite. Photo Alessandro Cantamessa 2015
Sprays of unusually purple Richterite crystals (analyzed) on white massive Albite with minor metallic Braunite crystals. FOV 6X4 cm. Self collected 2005. Photo and collection Alessandro Cantamessa (#1177).
Purple Alurgite crystals on matrix. Specimen size 5,5x4x2 cm. Self collected 1983. Photo and collection Alessandro Cantamessa (#206).
Spray of white Edenite on black massive Braunite. Specimen size: 5x5x2 cm. Self collected 2007. Photo and collection Alessandro Cantamessa (#354).
Lustrous black Braunite crystals measuring 1 mm with white Calcite crystals on white massive Quartz. Specimen size: 5x3x3 cm. Self collected 1986. Photo and collection Alessandro Cantamessa (#349).
0,5 mm orange Romeite octaedrons with dark massive Braunite. From an exchange with T. Barbera at Volpiano Mineral Fair, 2005. Photo and collection Alessandro Cantamessa (#1180).
Violet massive Violan with purplish red Alurgite and minor black Braunite. Specimen size 8x6x5 cm. Self collected 2012. Photo and collection Alessandro Cantamessa (#353D).
Rare prismatic well-termined violane crystals measuring 2 mm in a vein of white massive calcite surrounded by lamellar alurgite crystals. Specimen size 5x4x4 cm. Self collected 1986. Photo and collection Alessandro Cantamessa (#353).
From a calcite vein. Crystals size: 1 mm. Specimen size: 3x2x1 cm. Self collected 1986. Photo and collection Alessandro Cantamessa (#353A).
