BGS mineralogy and petrology collection record

Sample number MR21418
Sample Donor Not entered
Rock name Mudstone, Calcareous. 'Original entry: Argillaceous Mudstone Or Hard Calcareous Mudstone Showing Broad Ripple Structure'
Stratigraphy Rhaetian. Cotham Member.
Comments Argillaceous mudstone or hard calcareous mudstone showing broad ripple structure on which dessication cracks have formed,Cotham Beds,Upper Rhaetic,building stone (?),Collected byGA Kellaway KY509
Locality details Harry Stoke Drift Mine,excavation for drift mine at Harry Stoke, near Bristol,
50k map sheet Bristol (264)

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Map reference ST 619 786
Year collected 1957 
Bore name Not applicable
Confidentiality No restrictions