TY37AB2: A novelty at Tucson 2015. Very fine radiating growths of Marcasite crystals that are extraordinarily sharp, miter-shaped, very bright and are with small laminar and transparent Baryte crystals.
Bou Nahas Mine, Oumjrane mining area, Alnif Commune, Tinghir Province, Drâa-Tafilalet Region  Morocco (07/2014)

Specimen size: 6 × 4.4 × 3.5 cm = 2.36” × 1.73” × 1.38”