BGS mineralogy and petrology collection record

Sample number E45907; COLLNOLA313;
Sample Donor Allen,P.M.
Rock name 'Original entry: Chert'
Stratigraphy Not entered
Comments Chert
Locality details 640 yds 342 deg from Ford in Afon Gain
50k map sheet Harlech (135)

View images in GeoScenic related to 'Harlech'

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Map reference SH 7407 3274
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


E45907

Cross Polarized, E45907

Plane Polarized, E45907

Plane Polarized, E45907