BGS mineralogy and petrology collection record

Sample number E2134
Sample Donor Not entered
Rock name Not entered
Stratigraphy Not entered
Comments [ porphyritic diabase ]: undoubted feldspar phenocrysts converted into granular aggregates of quartz and feldspar, which are floating in a great mass of chlorite. Rock has been much sheared. Sericite is present in quantity. Some of the phenocrysts a
Locality details middle of boss, qy 200yds S of highroad near Cronkbane between Kirkmichael and St Johns:
50k map sheet Isle of Man (46)

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Map reference SC 30242 85977
Year collected Not entered 
Bore name Not applicable
Confidentiality No restrictions