contact dolerite and porphyritic microgranite [ quartzose diabase ]: original igneous structure preserved: a quartzose diabase with small feldspar phenocrysts: iron ores preserved but calcite alteration and much chlorite in rather large patches. A sm
Locality details
cliff at Traie ny Uainaigue, Maughold: 8-10' sheared greenstone dyke at junction with elvan.