BGS mineralogy and petrology collection record

Sample number S39735; COLLNOYB258;
Sample Donor Lawrie,T.R.M.
Rock name 'Original entry: Porphyrite'
Stratigraphy Not entered
Comments Concordant sheet, probably >12 ft thick, in quartz and quartzite mica schists. Chilled against country rock; porphyrite
Locality details Old railway line (Spean Bridge - Gairlochy), W side of cutting, 1090 yds W 16 deg N of junction of Inverness and Gairlochy roads
50k map sheet Loch Eil (62)

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Map reference NN 1996 8260
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


S39735

Cross Polarized, S39735

Plane Polarized, S39735

Plane Polarized, S39735