Memoirs of the Geological Survey of Great Britain, and of the Museum of Practical Geology in London Volume 5, Pts. 1-4

Memoirs of the Geological Survey of Great Britain, and of the Museum of Practical Geology in London Volume 5, Pts. 1-4

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1856 edition. Excerpt: ...Potash Carbonic acid Phosphoric acid Water, hygroscopic in combination Bisulphide of iron Organic matter Ignited insoluble residue Traces of lead and copper were found in the hydrochloric acid solution of 800 grs. of ore. XLVII.--Diamonds, Darlaston. (By A. Dick.) (No. 211a. of the Illustrated Catalogue.--No. XV. of General Section. See pp. 104. and 114.) Description.--Clay iron ore; colour, dark greyish brown. Structure, compact and homogeneous. It is seamed with a white powder (XLVIII.) and carbonate of lime, in which minute crystals of zinc-blende occur. Analysis by Method No. II. Water, hygroscopic and combined. grs. 56-88 grs. of ore lost of water at 100 C.--0-24 39-6'2 grs. of ore gave of water at a red heat--0-49 By the action of hydrochloric acid. 19 16 grs. of ore gave of insoluble residue--2' 80 The hydrochloric acid solution and the solution of the residue gave of--Peroxide of iron---.-8-96 Manganoso-manganic oxide---0-15 Alumina------1-00 Sulphate of lime-----161 Pyrophosphate of magnesia---2-56 Silica..... 1-90 33'24 grs. of ore gave of--Organic matter-----0-14 Chloride of potassium----0-46 Phosphoric and sulphuric acids and bisulphide of iron. 54-53 grs. of ore gave of pyrophosphate of magnesia-0-19 49-93 grs. of ore gave of--Sulphate of baryta (from sulphates)--0-09 Sulphate of baryta (from bisulphide of iron)--1 ' 08 50-93 grs. of ore gave of carbonic acid---16-20 Results tabulated.--Ore dried at 100 C. Protoxide of iron--.41-90 Protoxide of manganese--072 Alumina---526 Lime----347 Magnesia---489 Potash----0-87 Carbonic acid---3194 Phosphoric acid--022 Sulphuric acid---0-06 Silica-9'95 Bisulphide of iron--056 Water-0-82 Organic matter---042 101-08 Iron, total amount---3287 Clay, after ignition--14'67 No more

Product details

  • Paperback | 88 pages
  • 189 x 246 x 5mm | 172g
  • United States
  • English
  • black & white illustrations
  • 1236985397
  • 9781236985392