BGS mineralogy and petrology collection record

Sample number E13373; COLLNO7;
Sample Donor Matley, C.A
Rock name Dolerite (Synonymous With Microgabbro). 'Original entry: Dolerite'
Stratigraphy Not entered
Comments Gwana beds. Fine dolerite.
Locality details Trefgraig.
50k map sheet Aberdaron and Bardsey Island (133)

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Map reference
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


E13373

Cross Polarized, E13373

Plane Polarized, E13373

Plane Polarized, E13373