BGS mineralogy and petrology collection record

Sample number E46302; E46302/A; E46302/B; COLLNOBP3;
Sample Donor Lowe,D.J.
Rock name 'Original entry: Diorite'
Stratigraphy Not entered
Comments Diorite, large intrusion in Ffestiniog Flags
Locality details Exposure, 320 yds 173 deg from Tyddyn Mawr
50k map sheet Harlech (135)

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Map reference SH 7529 2610
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


E46302/A

Cross Polarized, E46302/A

Plane Polarized, E46302/A

Plane Polarized, E46302/A


E46302/B

Cross Polarized, E46302/B

Plane Polarized, E46302/B

Plane Polarized, E46302/B