BGS mineralogy and petrology collection record

Sample number E5420
Sample Donor Usher,W.A.E.
Rock name Hornfels. 'Original entry: Tourmaline Garnet Hornfels'
Stratigraphy Not entered
Comments Not entered
Locality details Quarry N of Bittaford Bridge, W of Valley
50k map sheet Ivybridge (349)

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Map reference SX 666 575
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


E5420

Cross Polarized, E5420

Plane Polarized, E5420

Plane Polarized, E5420