 | Sir William Fairbairn - Iron - 1865 - 332 pages
...of the ore used in Lanarkshire, is given by Dr. Colquhoun as follows :— Protoxide of iron Peroxide of iron . Protoxide of manganese Alumina Lime .......Magnesia Carbonic acid Phosphoric acid . Sulphuric acid Silica .... Bisulphide of iron Organic matter Potash Water in combination . Water, hygroscopic Insoluble... | |
 | Hilary Bauerman - Iron - 1868 - 450 pages
...colour, and often of a shaly structure, resembling cannel coal. They are Protoxide of iron Peroxide of iron Protoxide of manganese Alumina . Lime . Magnesia . Carbonic acid . Phosphoric acid Bisulphide of iron Water . Organic matter Insoluble residue I. II. III. IV. V. Metallic iron . 25-27... | |
 | Richard Meade - Coal mines and mining - 1882 - 970 pages
...6-71 0-20 Potash 0-48 0-56 Total .... 17-12 27-65 14-42 Metallic iron . . . 32-44 28-55 35-48 EESULTS TABULATED.* — ORE DRIED AT 100° C. Protoxide of....'.... Magnesia .... Carbonic acid .... Phosphoric acid Silica, soluble in hydrochloric acid Bisulphide of iron . Water in combination Organic matter ... Insoluble... | |
 | Hilary Bauerman - Iron - 1882 - 588 pages
...colour, and often of a shaly structure, resembling cannel coal. They are Protoxide of iron Peroxide of iron Protoxide of manganese Alumina . Lime Magnesia . Carbonic acid . Phosphoric acid Bisulphide of iron Water . Organic matter Insoluble residue Metallic iron . I. 36-14 0-61 1-38 0-52... | |
 | Geological Survey of Great Britain - Mines and mineral resources - 1924 - 1120 pages
...Grosmont Mines. By C. Tookey, in Percy's " Metallurgy : Iron and Steel," Table vii, No. 12 (p. 223). Protoxide of iron ... Protoxide of manganese Alumina Lime Magnesia Carbonic acid Phosphoric acid Ignited insoluble residue Per cent. 34-98 0-48 3-20 11-96 4-51 29-20 1-30 3-30 10-04 containing Silica... | |
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Peroxide of iron Protoxide of manganese Alumina . Lime . Magnesia . Carbonic acid . Phosphoric acid Bisulphide of iron Water . Organic matter Insoluble residue I. 