BGS mineralogy and petrology collection record

Sample number S18759
Sample Donor Flett,J.S.
Rock name 'Original entry: Chloritized Porphyrite'
Stratigraphy Not entered
Comments Chloritized porphyrite, cf. ortlerite
Locality details 0.25 miles SW of Hollow Hill, Loudoun Hill
50k map sheet Hamilton (23)

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Map reference NS 6102 3631
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


S18759

Cross Polarized, S18759

Plane Polarized, S18759

Plane Polarized, S18759