BGS mineralogy and petrology collection record

Sample number S17221
Sample Donor Clough, C.T.
Rock name 'Original entry: Andesite'
Stratigraphy Not entered
Comments Dark felsite ring dyke, sp. gr. 2.73
Locality details 2650 ft SSE of W end of Sgulan Beag S loch
50k map sheet Mull (44)

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Map reference NM 6115 3074
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


S17221

Cross Polarized, S17221

Plane Polarized, S17221

Plane Polarized, S17221