RQ16G2: Short tabular crystals, doubly terminated, well developed and partially covered by Muscovite. This floater sample was purchased by Folch, in person, from a miner in Barroca Grande, in the year 1965.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro Region  Portugal (1965)

Specimen size: 3.9 × 2.2 × 2 cm = 1.54” × 0.87” × 0.79”

Main crystal size: 2.1 × 1.7 cm = 0.83” × 0.67”