BGS mineralogy and petrology collection record

Sample number	E10657; COLLNO58;
Sample Donor	Blake,Professor
Rock name	'Original entry: Horneblende Albite Rock'
Stratigraphy	Not entered
Comments	see mem. Geology of Anglesy pp 440-2:323: fig 202 Coarse unfoliated Hornblends with irregular Aggregs of Albite Palaeozoic Intrusions
Locality details	Llyn Trefwll: from one of the "NHB"s of fig 202 W. of Lln Trefwll
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 321 769
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.