A novelty at St. Marie 2012. Very rich irregular aggregate of very flattened crystals of Marcasite that show, very well marked, the twin known as "cockscomb". They are extraordinarily bright, with small disphenoidal crystals of Chalcopyrite, and have skeletal forms, especially on the back side of the sample, that reveal holes left by former tabular crystals, probably Baryte.
Bou Nahas Mine, Oumjrane mining area, Alnif Commune, Tinghir Province, Drâa-Tafilalet Region Morocco (12/2011-01/2012)
Specimen size: 9.3 × 6.4 × 4.2 cm = 3.66” × 2.52” × 1.65”
Main crystal size: 1.1 × 0.3 cm = 0.43” × 0.12”
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