BGS mineralogy and petrology collection record

Sample number MR20621
Sample Donor Not entered
Rock name Not entered
Stratigraphy Not entered
Comments , ,Collected by T C F Hall:144
Locality details Valley between Tong Chang and Ur Pi Ryong,surface exposure,North Korea
50k map sheet Not entered
Map reference Not entered
Year collected 1956 
Bore name Not applicable
Confidentiality No restrictions