|
NGR42XXX: New find at the 2024 Sants-Barcelona Show.
Group of Andalusite crystals, one of them clearly dominant, with very well-defined faces and edges and on matrix. The specimen has been photographed and published in the magazine ‘Paragénesis’, number 01/2025, page 110
The Andalusites from this area occur in contact-metamorphic schists, formed by the thermal effect of granitic intrusions on pelitic rocks of the Ransol Valley. The crystals are usually well developed, sometimes showing the typical cross-shaped twinning (“St. Andrew’s cross”)
Bony de la Pleta de Jan, Vall de Ransol, Coma de Ransol, Parish of Canillo Andorra (07/2024)
Specimen size: 7.5 × 4.0 × 3.9 cm = 2.95” × 1.57” × 1.54”
Main crystal size: 4 × 3.4 cm = 1.57” × 1.34”
Photo: Pere Alonso
|