BGS mineralogy and petrology collection record

Sample number E10914; E10914/A; E10914/B; E10914/C; COLLNO315;
Sample Donor Blake,Professor
Rock name 'Original entry: Grit, Rich In Heavy Minerals'
Stratigraphy Not entered
Comments Ordovician Arenig. See Mem.Geol.of Anglesey.p.436. Quartz, albite, garnet, epidote, etc.
Locality details S.of Holland Arms
50k map sheet Caernarfon (105)

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Map reference SH 47 72
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


E10914

Cross Polarized, E10914

Plane Polarized, E10914

Plane Polarized, E10914


E10914/A

Cross Polarized, E10914/A

Plane Polarized, E10914/A

Plane Polarized, E10914/A


E10914/B

Cross Polarized, E10914/B

Plane Polarized, E10914/B

Plane Polarized, E10914/B


E10914/C

Cross Polarized, E10914/C

Plane Polarized, E10914/C

Plane Polarized, E10914/C