BGS mineralogy and petrology collection record

Sample number S20274
Sample Donor Refer to paper records
Rock name 'Original entry: Mixed Tholeiite And Buchite'
Stratigraphy Not entered
Comments Glassy tholeiitic portion contains hypersthene and bytownite-anorthite with sillimanite, fragments of quartzite, old anorthite with sillimanite; Memoir, p. 273
Locality details Lag an t-Seilich
50k map sheet Mull (44)

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Map reference NM 495 241
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


S20274

Cross Polarized, S20274

Plane Polarized, S20274

Plane Polarized, S20274