BGS mineralogy and petrology collection record

Sample number S13646
Sample Donor Wright, William Bourke (only Wright in Survey before 1935, prob. same as H B Wright above)
Rock name 'Original entry: Sediment With Puckered Quartz Veins: ?Slightly Hornfelsed'
Stratigraphy Not entered
Comments Contact alteration of the kentallenite mass; relation of shearing and crinkling to hornfelsing not obvious
Locality details Balnahard, Colonsay
50k map sheet Colonsay (35)

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Map reference NR 4135 9918
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


S13646

Cross Polarized, S13646

Plane Polarized, S13646

Plane Polarized, S13646