BGS mineralogy and petrology collection record

Sample number E18004; COLLNOW1;
Sample Donor Whitehead,T.H.
Rock name 'Original entry: Acid Porphyrite'
Stratigraphy Not entered
Comments From eratic boulder ?Emmerdale
Locality details 200yds. SW of Foxhill Farm, Frodsham
50k map sheet Runcorn (97)

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Map reference SJ 506 753
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


E18004

Cross Polarized, E18004

Plane Polarized, E18004

Plane Polarized, E18004