156 GEOLOGY. 



and the faces much rounded ; colourless to pale yellow or green ; sp. 

 gr. 3-42. A list of associated minerals and gems is given. E. E., Jun. 



Liversidge, Prof. A. Iron and Coal Deposits at Wallerawang. 

 Trans. 11. Soc. N. S. Wales for 1874, pp. 81-91. 



The deposits of iron are situated near the junction of the Coal 

 Measures with the Devonian or U. Silurian, about 6 miles from the 

 above town, and contain two varieties of ore, Magnetite and Goethite, 

 accompanied by beds of so-called " clay-band " ironstone. Magnetite : 

 the vein runs about N.E. and S.W., and is from 13 to 24 feet wide ; 

 yielded 40*89 p. c. of metallic iron. The veins are accompanied by a 

 highly ferruginous variety of garnet. Brown Hematite : the ore is 

 composed of mamillated and botryoidal Goethite, containing very little 

 phosphorus and sulphur. Clay-Band Ironstone', four seams inter- 

 stratified with the Coal Measures, dipping N.E. about 2°. Appears to 

 be a brown hematite of the variety limonite. No. 2 seam gave 53*31 

 p. c. metallic iron ; No. 3, 49*28 p. c. The Coal Measures contain 

 three principal scams ; the lowest, 17g ft., is a hard and compact coal 

 free from sulphur. The middle is less combustible, and contains more 

 ash, also free from sulphur ; thickness 6| ft. The top seam will probably 

 make a good house-coal. The lowest " clay-band " ironstone is 12 ft. 

 above the top coal. There is also a considerable outcrop of limestone. 



R. E., Jun. 



Lucas, Hon. John. Mines and Mineral Statistics of New South 

 Wales, and Notes on the Geological Collection of the Department 

 of Mines, &c. Pp. 252 ; maps, plans, and sections. 8vo. Sydney. 



Contains the following Reports and Papers : — I. General remarks on 

 and Statistics of Gold, pp. 4-13 ; II. The Reports of Messrs. Clarke, 

 De Boos, Johnston, Dalton, Browne, Buchanan, Hutton, and Phillips 

 on their districts, 14-53 ; III. Statistics of Coal, 54-62 ; lY. General 

 remarks on and statistics of Tin, with Report of Mr. Gower on the 

 Vegetable Creek Tin-field, 62-70. 



Y. C. S. "Wilkinson. Upon the Tin-bearing country of New England, 

 pp. 70-89, sketch-sections and 5 plates. — a. Recent. River-drifts and 

 other accumulations now forming ; yielding stream-tin, gold, and sap- 

 phires. — 6. Pleistocetie. Drift deposits forming Alluvial flats and terraces 

 through which the present rivers have cut their channels, all tin-bearing 

 in granite-country. — c. Pliocene. Basaltic trap sometimes filling up 

 old valleys. — d. L. Miocene. This must have been of considerable thick- 

 ness, and once covered nearly the whole district. The base consists of 

 waterworn drift and conglomerate, and is stanniferous. In places it 

 has been broken up and re-deposited as a shallow surfacing near the 

 tops of hills. — e. Carboniferous. Thin-bedded shales, highly inclined, 

 probably referable to the middle part of this series, occur on Newstead 

 Creek. — -/. Granite. Contains many tin-lodes, and is the source of all 

 the stream-tin of the district. — g. Greenstone Trap. In places between 

 the granite and basalt boundaries. — li. General Conclusions. The tin- 

 bearing granites are of at least two ages, later than the greenstone 

 and younger than the Carboniferous. The last probably corresponds 



