BGS mineralogy and petrology collection record

Sample number E46318; COLLNOBP20;
Sample Donor Lowe,D.J.
Rock name 'Original entry: Diorite'
Stratigraphy Not entered
Comments Diorite sill in Ordovician (? Llanvin) Siltstone
Locality details Crag N of Wall, 450 m at 114 deg from Caer Defaid
50k map sheet Harlech (135)

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Map reference SH 7983 2333
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


E46318

Cross Polarized, E46318

Plane Polarized, E46318

Plane Polarized, E46318