BGS mineralogy and petrology collection record

Sample number S21878
Sample Donor Read, H.H.
Rock name 'Original entry: Hornblendic Rock Of Durcha Type'
Stratigraphy Not entered
Comments S.21877-S.21882 is a series of specimens showing variation in the amount of hornblende in the Durcha Type, which is taken by Read to be sedimentary; cf. Sh. 103 memoir
Locality details In Allt Durcha, just above Durcha. Pictish Tower, 1.625 mile ENE of Rosehall House
50k map sheet Lairg (102)

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Map reference NC 49903 02378
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


S21878

Cross Polarized, S21878

Plane Polarized, S21878

Plane Polarized, S21878