BGS mineralogy and petrology collection record

Sample number MR26288
Sample Donor Not entered
Rock name Dolerite (Synonymous With Microgabbro). 'Original entry: Diabase'
Stratigraphy Not entered
Comments Diabase, auriferous later series,Commodity:gold,Collected by J B Harrison:L14
Locality details 184ft depth in borehole, Omai Goldfield, Essequibo River, British Guiana,borehole,SG = 2.89,Guyana
50k map sheet Not entered
Map reference 2:55,58:50
Year collected 1963 
Bore name Not applicable
Confidentiality No restrictions