BGS mineralogy and petrology collection record

Sample number E20761
Sample Donor Mitchell,G.H.
Rock name Dolerite (Synonymous With Microgabbro); Tuff;. 'Original entry: Andesitic Tuff.'
Stratigraphy Not entered
Comments Dolerite from base of hole, at 328' 6" to 330' 6". Andesitic crystal-tuff.
Locality details Trial Water Bore, Battle Flat, Bardon, near Coalville.
50k map sheet Coalville (155)

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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


E20761

Cross Polarized, E20761

Plane Polarized, E20761

Plane Polarized, E20761