BGS mineralogy and petrology collection record

Sample number S73275; COLLNONX1175;
Sample Donor Rock,N.M.S.
Rock name 'Original entry: Porphyrite'
Stratigraphy Not entered
Comments Dyke with finer- and coarser-grained bands parallel to margins, c. 1 m thick, cutting Silurian greywacke
Locality details Barn Heugh, Kirkcudbright
50k map sheet Kirkcudbright (5)

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Map reference NX 597 470
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


S73275

Cross Polarized, S73275

Plane Polarized, S73275

Plane Polarized, S73275