NTT81XXX: Group formed by globular aggregates of octahedral Fluorite crystals that have grown together to adopt these spherical shapes and that can be observed under magnification, where the different growth phases can be distinguished. They are apple-green in color and bright, and are on a porphyritic rock matrix.
From a significant find very close to the urban center of Barcelona, specifically in the neighboring city of Santa Coloma de Gramenet.
This piece has been photographed and published in the magazine ‘Paragénesis’ number 01/2025, page 107

The locality lies within the geological framework of the Catalan Coastal Range, dominated by Paleozoic materials of the Hercynian basement, mainly schists and granites, locally affected by fracturing and low-intensity hydrothermal processes. This context gave rise to small vein-type mineralizations and to modest mineral associations of local and educational interest, such as the characteristic globular Fluorite from the locality.
Can Franquesa, Castellar Hill (Marina Range), Singuerlín, Santa Coloma de Gramenet, Comarca Barcelonès, Barcelona, Catalonia / Catalunya  Spain (14/01/2015)

Specimen size: 6.2 × 5.1 × 2.6 cm = 2.44” × 2.01” × 1.02”

Main crystal size: 0.8 × 0.8 cm = 0.31” × 0.31”