Description: When the pegmatite body is "boudinated" (very usual in syntectonic pegmatites as these ones) schorl is concentrated on the sides of the constrictions: image © Pura Alfonso - J. C. Melgarejo (2000) Boron vs. Phosphorus in granitic pegmatites: the Cap de Creus case

All pictures, text, design © Forum FMF 2006-2025