7

a—3

" Pitch-coals, Ngunguru Coalfield, forwarded by Mr. G. Wilson, Inspector oj Mines ; analysed by G. P. Hilton. Sample A. Sample B. "Fixed carbon ... ... ... 52-37 52-72 Hydro-carbons ... ... ... ... ... 36-73 36-54 Water ... ... ... ... ... ... 7-31 7-42 Ash ... ... ... ... ... ... 3-59 3-32 10000 10000 Evaporative power ... ... ... ... 6-801b. 6-851b. " Analysed by J. M. McLaren. Sample C. Sample D. "Fixedcarbon .. ... ' ... ... ... 54-30 56-60 Hydro-carbons ... ... ... ... ... 34-90 32-50 Water ... ... ... ... ... ... 7-30 7-40 Ash ... ... ... ... ... ... 3-50 3-50 100-00 100-00 Evaporative power ... ... ... ... 7 - 061b. 7 - 361b. " Bemarks.— These are bright, lustrous coals, somewhat brittle and flakey. The analyses prove them to be superior pitch-coals, well adapted for steam and household purposes. The ash- is white or greyish white ; and sulphur was found to be practically absent. They frit together, but do not form a coherent coke. " Sample E, Bituminous Coal, analysed by Bain Hogg. "Fixedcarbon ... ... ... ... * ... ... ... 67-20 Hydro-carbon ... ... ... ... ... ... ... 25-18 Water ... ... ... ... ... ... ... ... 5-42 Ash ... ... ... . . ... ... ... ... 2-20 100-00 Evaporative power, 8-73 lbs. Sulphur, trace. " This is a superior bituminous coal, occurring as a thin layer in the body of the main seam. It forms a fine hard coherent coke. Coal, brittle, shining; ash, white. The presence of this band of bituminuous coal will tend to raise the average quality of the general mass of the coal in the seam. "Bituminous Coal, Hikurangi, fonvardcd by T. P. Moody, Esq., M.E.; analysed by Comyn Ausley. "Fixedcarbon ... ... ... ... ... ... ... 49-62 Hydro-carbons ... ... ... ... ... ... ... 43-54 Water ... ... ' ... ... ... ... ... ... 5-12 Ash ... ... ... ... ... ...■ ... ... 1-72 10000 Evaporative power, 6-45 lbs. " Specific gravity, 1-297. A fairly hard, lustrous, bituminous coal, forming a fine hard coke. The ash is low, and the hydro-carbons unusually high, for this class of coal. This coal is much superior to the average sample of Hikurangi coal. " Black-sand, Coromandel, forwarded by J. Thomson, Esq., Bocklands; analysed by J. M. McLaren. " Quartz, and insoluble gangue ... ... ... ... ... 82-68 Iron oxides (principally Fe 3 0 4 ... ... ... ... ... 10-94 Alumina ... ... ... ... ... ... . ... 3-68 Water, and loss ... ... ... ... ... ... ... 2-70 100-00 " This sand was assayed, and showed the following value per ton :— Oz. dwt. gr. "Bullion ... ... ... ... ... ... 41 16 20 Gold ... ... ... ... ... ... ... 30 10 0 Silver ... ... ... ... ... ... ... 11 6 20 Value, £123 14s. "Complex Sulphide, Koputaiauki; analysed by J. M. McLaren. "Silica ... ... ... ... ... ' ... ... ... 15-76 Copper ... ... ... ... ... ... ... ... 4-10 Iron ... ... ... ... ... ... ... ... 23-41 Zinc ... ... ... ... ... ... ... ... 16-64 Sulphur ... ... ... ... ... ... ... 38-12 98-03 " This ore contained bullion valued at £3 Bs. 4d.