RX14W6: Group of twinned dipyramidal crystals that are very bright with yellowish brown reflections and transparencies and show fine horizontal striations. We especially note the size of the main crystal which is very big compared with most of the samples from Panasqueira.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Region  Portugal

Specimen size: 3.5 × 2.6 × 2 cm = 1.38” × 1.02” × 0.79”

Main crystal size: 2.6 × 2.3 cm = 1.02” × 0.91”