BGS mineralogy and petrology collection record

Sample number E4825; COLLNO23;
Sample Donor Allister, D.Mc.
Rock name Hornfels. 'Original entry: Spotted Slate'
Stratigraphy Not entered
Comments Coarse biotite spots. Ilminite in small plates.
Locality details Near 500.7 B.M. NE. of Tregarrick.
50k map sheet Bodmin (347)

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Map reference SW 995 601
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


E4825

Cross Polarized, E4825

Plane Polarized, E4825

Plane Polarized, E4825