BGS mineralogy and petrology collection record

Sample number S24424
Sample Donor Richey, James E.
Rock name 'Original entry: Porphyritic Dolerite'
Stratigraphy Not entered
Comments Porphyritic dolerite between Great Eucrite and hypersthene gabbro
Locality details 250 yds E 15 deg S of Plocaig
50k map sheet Coll (51)

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Map reference NM 4550 6975
Year collected Not entered 
Bore name Not applicable
Confidentiality No restrictions

Petrological thin sections

Links to high resolution images

Transition from XPL to PPL light


S24424

Cross Polarized, S24424

Plane Polarized, S24424

Plane Polarized, S24424