BGS mineralogy and petrology collection record

Sample number S3320; S3320/a; S3320/b;
Sample Donor Geikie,A.
Rock name 'Original entry: Pitchstone In Dolerite'
Stratigraphy Not entered
Comments Above leaf beds
Locality details Ardtun, Mull
50k map sheet Iona (43)

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Map reference NM 376 248
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


S3320

Cross Polarized, S3320

Plane Polarized, S3320

Plane Polarized, S3320


S3320/a

Cross Polarized, S3320/a

Plane Polarized, S3320/a

Plane Polarized, S3320/a


S3320/b

Cross Polarized, S3320/b

Plane Polarized, S3320/b

Plane Polarized, S3320/b