BGS mineralogy and petrology collection record

Sample number S39748; COLLNOYB314;
Sample Donor Lawrie,T.R.M.
Rock name 'Original entry: Microdiorite, Dark, Fine-Grained, Mafic'
Stratigraphy Not entered
Comments Concordant sheet, c. 15 ft, in striped quartzose to micaceous schists; made up oif about 11 well-defined bands sub-parallel to margins, alternate pale coarse-grained and dark fine-grained types; specimen is dark finer more mafic type; microdiorite
Locality details R Spean, right bank, 1040 yds W 4 deg N of juction of Inverness and Gairlochy roads
50k map sheet Loch Eil (62)

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Map reference NN 1995 8239
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


S39748

Cross Polarized, S39748

Plane Polarized, S39748

Plane Polarized, S39748