BGS mineralogy and petrology collection record

Sample number MR21808; F6562;
Sample Donor Not entered
Rock name Porphyry. 'Original entry: Motley Porphyry'
Stratigraphy Not entered
Comments Motley porphyry, Younger Intrusive Series,:
Locality details Large dyke, about 5 miles N of Jos, Nigeria,surface exposure,Large polished specimen. See Bull Geol Surv Nig. No 19 "Geology of the Plateau Tinfields",Nigeria
50k map sheet Not entered
Map reference 9:59,8:53
Year collected 1958 
Bore name Not applicable
Confidentiality No restrictions