BGS mineralogy and petrology collection record

Sample number E7892; COLLNO18;
Sample Donor Barrow, G.
Rock name 'Original entry: Granite (Tourmaline)'
Stratigraphy Not entered
Comments Fine grained variety.
Locality details Fine granite above Higher Harrow Bridge.
50k map sheet Camelford (336)

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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


E7892

Cross Polarized, E7892

Plane Polarized, E7892

Plane Polarized, E7892