BGS mineralogy and petrology collection record

Sample number S29818
Sample Donor Richey, James E.
Rock name 'Original entry: ?Porphyrite'
Stratigraphy Not entered
Comments 6 ft porphyritic dyke
Locality details Stream, Allt Tigh Siorith 1200 yds E 23 deg S of S end of Uisge
50k map sheet Tobermory (52)

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Map reference NM 8191 5417
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


S29818

Cross Polarized, S29818

Plane Polarized, S29818

Plane Polarized, S29818