BGS mineralogy and petrology collection record

Sample number E10692; COLLNO93;
Sample Donor Blake,Professor
Rock name 'Original entry: Phenocrystalline Mica Hornfels'
Stratigraphy Not entered
Comments see mem. Geology of Anglesy pp 334: 94-96: c.f. E9806 Quartz, Alkali Feldspar, White Micas Biotite inclusion in Coedena Granite Mona Complex Platonic Intrusion
Locality details Railway cutting SW. of Sarn-fadog Middle of cutting Llancrchymedd-to Llangwyllog
50k map sheet Holyhead (93)

View images in GeoScenic related to 'Holyhead'

View the geology near 'Holyhead'

Map reference SH 417 806
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


E10692

Cross Polarized, E10692

Plane Polarized, E10692

Plane Polarized, E10692