BGS mineralogy and petrology collection record

Sample number E3148
Sample Donor Usher,W.A.E.
Rock name Hornfels. 'Original entry: Biotite Hornfels'
Stratigraphy Not entered
Comments Spotted.
Locality details Quarry by High Rd Tavistock to Princetown near 3rd milestone from Tavistock.
50k map sheet Dartmoor Forest (338)

View images in GeoScenic related to 'Dartmoor Forest'

View a geological map near 'Dartmoor Forest'

Map reference
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


E3148

Cross Polarized, E3148

Plane Polarized, E3148

Plane Polarized, E3148