BGS mineralogy and petrology collection record

Sample number E10705; COLLNO106;
Sample Donor Blake,Professor
Rock name 'Original entry: Hornfels: Cryptocrystalline'
Stratigraphy Not entered
Comments see mem. Geology of Anglesy pp 335-6 Grit, probably of Gwna Beds with Hornfels-Micas and Alkali feldspar Mona Complex Platonic Intrusion
Locality details By the farm Bodafon Mountain
50k map sheet Holyhead (93)

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Map reference SH 478 854
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


E10705

Cross Polarized, E10705

Plane Polarized, E10705

Plane Polarized, E10705