BGS mineralogy and petrology collection record

Sample number E20663; COLLNOSEH885;
Sample Donor Hollingworth,S.E.
Rock name Hydroxides And Oxides Of Iron. 'Original entry: Calcareous Ironstone'
Stratigraphy Middle Jurassic. Northampton Ironstone.
Comments gritty, calcareous, chamositic oolite with siderite matrix near base of ironstone, altered oolite, siderite type, 'grey' not 'green'
Locality details trial pit 370 y S4degE of Orton Church
50k map sheet Market Harborough (170)

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Map reference SP 544 790
Year collected
Bore name Not applicable
Confidentiality No restrictions

Petrological thin sections

Links to high resolution images

Transition from XPL to PPL light


E20663

Cross Polarized, E20663

Plane Polarized, E20663

Plane Polarized, E20663