BGS mineralogy and petrology collection record

Sample number S29954; S29954/A; S29954/B;
Sample Donor Phemister,J.
Rock name 'Original entry: Garnetiferous Cordierite-Anthophyllite Gneiss'
Stratigraphy Not entered
Comments Garnetiferous cordierite-anthophyllite gneiss. Augen granulitic gneiss, similar to S. 29953 but with porphyroblastic hornblende, in hornblende-gneiss group
Locality details Grud Burn 2300 ft SSW of top of Little Ballia Clett
50k map sheet Yell (130)

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Map reference HU 320 822
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


S29954

Cross Polarized, S29954

Plane Polarized, S29954

Plane Polarized, S29954


S29954/A

Cross Polarized, S29954/A

Plane Polarized, S29954/A

Plane Polarized, S29954/A


S29954/B

Cross Polarized, S29954/B

Plane Polarized, S29954/B

Plane Polarized, S29954/B