BGS mineralogy and petrology collection record

Sample number RC1121/4
Sample Donor Not entered
Rock name 'Original entry: Danalite, Helvite'
Stratigraphy Not entered
Comments Danalite /? heluite - both are end members of the isomorphous series: Mn4[BeSiO4]3S-Fe4{BeSiO4}3S-Zn4{BeSiO4]3S. Helvite and danalite are comparatively abundant beryllium minerals. UG 8187.
Locality details Danalite. Ladini, Banchi Province, Northern Nigeria.
50k map sheet Not entered
Map reference Not entered
Year collected
Bore name Not applicable
Confidentiality No restrictions