BGS mineralogy and petrology collection record

Sample number MR18402
Sample Donor Not entered
Rock name Siltstone (Undifferentiated). 'Original entry: Choclate Coloured Rather Silty Micaceous Sandstone. Senni Beds.'
Stratigraphy Pragian. Senni Formation.
Comments Choclate coloured rather Silty Micaceous Sandstone. Senni Beds.,Senni Beds, middle part,Devonian,Collected byW N Croft
Locality details Storey Arms, Road side Section, 1000 yd NNW (?WNW) of Storey Arms Hostle. SW of Brecon,51
50k map sheet Merthyr Tydfil (231)

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Map reference SN 974 206
Year collected 1950 
Bore name Not applicable
Confidentiality No restrictions