Look out! A specimen like this is rare in Panasqueira. Sphalerite is not usually found there in good specimens, but moreover, when it is, it is almost always associated with other sulphides, which yields less luminous groups. In this case, the association with Fluorapatite, well crystallized and with a fibrous appearance, and Muscovite with a good color, results in a very unusual specimen, a real curiosity for those who specialise in this mine.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Portugal (±2005)
Specimen size: 10.4 × 6.6 × 3.7 cm = 4.09” × 2.60” × 1.46”
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