RM46M9: Group of very well defined and bright crystals of Arsenopyrite with small crystals of Muscovite and white Siderite. On the bottom of the specimen there are a group of small crystals of Topaz. Although in the past some Topaz appeared in this mine, they are actually extremely rare.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Region  Portugal (±1982)

Specimen size: 5.7 × 4.1 × 3.6 cm = 2.24” × 1.61” × 1.42”

Main crystal size: 2 × 1.5 cm = 0.79” × 0.59”