Réflectance et composition chimique du gîte sédimentaire de Chaudfontaine et du gîte filonien de la Rochette (Province de Liège, Belgique)

The morphological, optical and chemical features of bravoites from a sedimentary ore deposit at Chaudfontaine and a vein-type ore deposit at La Rochette, both in Belgium, are compared. In addition to a zonal structure, a spotted structure has been observed in the cores of some crystals. The correlation between reflectance and Ni content is confirmed only for Co-poor bravoites.-R.A.H. ; info:eu-repo/semantics/published