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BGS mineralogy and petrology collection record

Sample number E27174; COLLNOA;
Sample Donor Hestor,S.W.
Rock name Not entered
Stratigraphy Not entered
Comments Race' from upper part of mottled Clay of Reading Beds
Locality details Old quarry 550yd N. 48d W. of St Mary's church Harefield
50k map sheet Beaconsfield (255)

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Map reference TQ 050 900
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


E27174

Cross Polarized, E27174

Plane Polarized, E27174

Plane Polarized, E27174