BGS mineralogy and petrology collection record

Sample number S32961
Sample Donor Robertson,T.
Rock name 'Original entry: Acid (Felsitic) Fine-Grained Biotite Porphyrite'
Stratigraphy Not entered
Comments Rocks intrusive in Struan Flags
Locality details Garry - Ericht Water Tunnel; 7490 ft from Garry shaft
50k map sheet Rannoch (54)

View images in GeoScenic related to 'Rannoch'

View the geology near 'Rannoch'

Map reference NN 6031 7082
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


S32961

Cross Polarized, S32961

Plane Polarized, S32961

Plane Polarized, S32961