BGS mineralogy and petrology collection record

Sample number E2920
Sample Donor Not entered
Rock name Not entered
Stratigraphy Not entered
Comments sheared granodiorite [ sheared dacite or elvan ]: augen made up of plagioclase, quartz and micropegmatite, associated with apatite quartz and calcite but further sheared. - see Lamplugh p319
Locality details Port-y-Myllin: great dyke cut by 2921 and that by 2922
50k map sheet Isle of Man (36)

View images in GeoScenic related to 'Isle of Man'

View a geological map near 'Isle of Man'

Map reference SC 47315 92903
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


E2920

Cross Polarized, E2920

Plane Polarized, E2920

Plane Polarized, E2920