BGS mineralogy and petrology collection record

Sample number S94456; S94456/A; S94456/B; COLLNOPX340;
Sample Donor McMillan,A.A.
Rock name Wacke. 'Original entry: Greywacke'
Stratigraphy Not entered
Comments Fine grained greywacke in bedded contact with coarse grained greywacke, with mineral stretching fabric oblique to bedding
Locality details Roundhill Forest, 2km SW of Penpont on forest track 40m E of Shinnelwater
50k map sheet Thornhill (9E)

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Map reference NX 8315 9318
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


S94456/A

Cross Polarized, S94456/A

Plane Polarized, S94456/A

Plane Polarized, S94456/A


S94456/B

Cross Polarized, S94456/B

Plane Polarized, S94456/B

Plane Polarized, S94456/B