BGS mineralogy and petrology collection record

Sample number E4570
Sample Donor Usher,W.A.E.
Rock name Tuff. 'Original entry: Sheared Tuff'
Stratigraphy Not entered
Comments Upp. Devonian
Locality details WNW of Trethawle; 1.4 ml S of Liskheard Church
50k map sheet Plymouth (348)

View images in GeoScenic related to 'Plymouth'

View a geological map near 'Plymouth'

Map reference SX 260 622
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


Cross Polarized, E4570

Plane Polarized, E4570

Plane Polarized, E4570