BGS mineralogy and petrology collection record

Sample number E21971
Sample Donor Shannon,W.G.
Rock name Granite. 'Original entry: Biotite Granite'
Stratigraphy Not entered
Comments Fine grained granite with topz
Locality details Shipley Bridge, Brent
50k map sheet Ivybridge (349)

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Map reference SX 681 629
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


E21971

Cross Polarized, E21971

Plane Polarized, E21971

Plane Polarized, E21971