Beryllium mineralization in metasomatic processes within a zone of crushing

In the test area, at the junction of a platform with a folded terrain, berylliferous metasomatic bodies are associated with contacts between rocks of a highly diverse composition which may be taken as evidence of some kind of localization of the metasomatizing solutions in zones of the inter-formational stratification produced at the time when the intrusion itself is being formed. Ruptures, faults, overthrusts in the zone of crumpling, often along contacts between different rocks, are definitive in the structural control of the mineralization. — IGR Staff.