John Betts - Fine Minerals
Sparkling dark metallic-lustered Rheniite microcrystals on gray volcanic matrix. The Rheniite crystals are scattered throughout the specimen and are best viewed under magnification. The top photo is a full view, and bottom one is a zoom into the Rheniite zone.
Kudryavyi Volcano, Iturup Island, Sakhalinskaya Oblast', Russia
28 x 19 x 16 mm.