BGS mineralogy and petrology collection record

Sample number S22943
Sample Donor Eckford,R.
Rock name 'Original entry: Augite Biotite Felspar Porphyrite'
Stratigraphy Not entered
Comments Augite biotite felspar porphyrite, dyke (knob), tending to kersantite
Locality details 30 yards SW of Minto Cottage, 2.25 miles WSW of Twynholm
50k map sheet Kirkcudbright (5)

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Map reference NX 62 52
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


S22943

Cross Polarized, S22943

Plane Polarized, S22943

Plane Polarized, S22943