BGS mineralogy and petrology collection record

Sample number S20021; S20021/A; S20021/B; COLLNO19;
Sample Donor Richey, James E.
Rock name 'Original entry: Internal Plug Of Porphyritic Basalt Agm Basalt Jer'
Stratigraphy Not entered
Comments Junction of gabbro and porphyritic basalt (S. 20020); two types of porphyritic basalt which centred gabbro neck, either as an (?) or an earlier intrusion; intermediate between Dalmeny and Craiglockhart types, but note albite and epidote; see also S.
Locality details 400 yds WNW of Greenside, W of Loch Libo
50k map sheet Kilmarnock (22)

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Map reference NS 4206 5599
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


S20021/A

Cross Polarized, S20021/A

Plane Polarized, S20021/A

Plane Polarized, S20021/A


S20021/B

Cross Polarized, S20021/B

Plane Polarized, S20021/B

Plane Polarized, S20021/B