BGS mineralogy and petrology collection record

Sample number E30852; COLLNOJW266;
Sample Donor Wright,J.E.
Rock name 'Original entry: Hornblende Bearing Chert'
Stratigraphy Not entered
Comments ? Chert or cherty hornfels. From debris of trench excavation. Site is on crest of ridge so specimens are probably close to solid positions.
Locality details Watermain trench, 430 Yds. W. at 14 deg. N. of Drewsteignton Church.
50k map sheet Okehampton (324)

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Map reference SX 734 910
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


E30852

Cross Polarized, E30852

Plane Polarized, E30852

Plane Polarized, E30852