NF13I7: Group on Limonite matrix of small bright crystals, most of them doubly terminated, forming dipyramids with very well-defined faces and edges. The specimen is very esthetic due its columnar growths, with very attractive crests and vugs.
This specimen was photographed and published as a novelty at the 2007 Tucson Show in the magazine ‘Le Règne Minéral’ number 74, page 9.
Preguiça Mine, Sobral da Adiça, Moura, Beja District, Baixo Alentejo, Alentejo  Portugal (2005-2006)

Specimen size: 4.9 × 3.8 × 3.1 cm = 1.93” × 1.50” × 1.22”

Main crystal size: 0.1 × 0.1 cm = 0.04” × 0.04”