BGS mineralogy and petrology collection record

Sample number S16487
Sample Donor Clough, C.T.
Rock name 'Original entry: Basic Porphyritic Andesite'
Stratigraphy Not entered
Comments Lava of Derrynaculan type; Central type, non-variolitic, porphyritic, Memoir, p. 148
Locality details 1720 ft ENE by N of summit of Cruach Choireadail
50k map sheet Mull (44)

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Map reference NM 5904 3075
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


S16487

Cross Polarized, S16487

Plane Polarized, S16487

Plane Polarized, S16487