The deposits of the useful minerals & rocks; their origin, form, and content . pharosideritic clay-ironstone ofthe Upper Lias and Lower Dogger, on the south slope of the range ; (2) the 1020 ORE-DEPOSITS clayey iron oolite seam in the hanging-wall of the Macrocephalus sandstone—Upper Dogger—west of the Porta ; and (3) the oolitic haematite in theCoral Rag, east of the Porta. 1. The clay-ironstone nodules of the Upper Lias form several bedsof variable thickness lying one above the other; one sample contained31-5 per cent of iron. ^ These deposits are at present of no economicimportance. 2. Imme Stock Photohttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/the-deposits-of-the-useful-minerals-rocks-their-origin-form-and-content-pharosideritic-clay-ironstone-ofthe-upper-lias-and-lower-dogger-on-the-south-slope-of-the-range-2-the-1020-ore-deposits-clayey-iron-oolite-seam-in-the-hanging-wall-of-the-macrocephalus-sandstoneupper-doggerwest-of-the-porta-and-3-the-oolitic-haematite-in-thecoral-rag-east-of-the-porta-1-the-clay-ironstone-nodules-of-the-upper-lias-form-several-bedsof-variable-thickness-lying-one-above-the-other-one-sample-contained31-5-per-cent-of-iron-these-deposits-are-at-present-of-no-economicimportance-2-imme-image340215673.html
RM2ANE4FN–The deposits of the useful minerals & rocks; their origin, form, and content . pharosideritic clay-ironstone ofthe Upper Lias and Lower Dogger, on the south slope of the range ; (2) the 1020 ORE-DEPOSITS clayey iron oolite seam in the hanging-wall of the Macrocephalus sandstone—Upper Dogger—west of the Porta ; and (3) the oolitic haematite in theCoral Rag, east of the Porta. 1. The clay-ironstone nodules of the Upper Lias form several bedsof variable thickness lying one above the other; one sample contained31-5 per cent of iron. ^ These deposits are at present of no economicimportance. 2. Imme
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