168 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 58 



TASMANIA (Continued) 



1123. Rath, M. J. von. Eine topographisch-montanistische Karte des Mount 



Bischoff auf Tasmanien. 



Verh. Nat. Ver. preuss. Rheinl. Westph. (Sitzungsberichte), A'ol. 35, 1S78, Bonn, 

 p. 7. 



1124. Report of the Secretary for Mines, Tasmania. 



Hobart. 



Contains reports of the mining industry, progress and development work. 



Issued annually for the preceding fiscal year. 



Reyek, Eduard. See Nos. 87 and 1354. ^ 



1125. Rickard, Edgar. The Briseis tin lead at Derby, Tasmania. 



Eng. Mg. Journ., Vol. 75, 1903, New York, pp. 119-120. Sketch plan. 



Describes placer cassiterito occurring in the gravel of a river 100 feet below the 

 present streams. It is capped by basalt. Worked by a modification of the hydraulic 

 system. 



1126. Ritchie, W. Tin in Tasmania. 



Mg. .Journ. Railw. Comm. Gaz., Vol. 43, 1873, London, p. 1109. 



E.xtract from letter. Description of tin deposits of Mount Bischoff. Some pieces 

 of tin ore were of such size that a man could not lift them. Both lode and alluvial 

 tin ore of much richness occur. Great natural facilities for the working of mine. 



RoLKER. Chas. M. See No. 1357. 



1127. RowE, Capt. James. Tin mining in Tasmania. 



Trans. Mg. Ass. Inst. Cornwall, Vol. 1, 1S87, Camborne, pp. 153-lfi3, map. 



Also, Berg. Hiitt. Zeit., Vol. 47, 1S85, Leipzig, pp. 183-185. 



First discovery of importance at Mount Bischoff in 1872, by Chas. Smith in a 

 deposit " of a highly ferruginous nature, consisting of oxide of iron, decomposed 

 porphyry and tin ore." Cut 1000 feet wide and 100 feet deep gave 3 per cent ore. 

 Two other districts. Mt. Bischoff is in northwest portion, the " West Coast " region 

 is just southwest of it, and the Northeast District is in the northeast part of the 

 island. " West Coast " not paying. Deposits in northeast in both recent and old 

 river beds partly covered by basalt. Gravel up to 170 feet deep in places, carrying 

 about three-fourths per cent of ore worked by hydraulicking. 



1128. SajJdeman, J. J. The mineral resources of Tasmania. 



Trans. North of England Inst. Mg. Mech. Eng., Vol. 49, 1901, Newcastle-upon-Tyne, 

 pp. 32-37, illus. 



Reprint: Trans. Inst. Mg. Eng., Vol. 18, 1899-19C0, London, pp. 32-37. 



The tin production of Tasmania holds, according to writer, the first place among 

 the Australian colonies. Up to end of 1897, it produced 80,000 tons of tin, valued at 

 £r,,.50O,000; of this Mt. Bischoff contributed about £2,700,000. This mine is worked 

 in three open faces or quarries: Tlio Brown Face, the Slaughter Face and the White 

 face. Descriptions of these quarries are given. The Blue Tier district is described as 

 having intrusive dj'kcs of stanniferous granite. The mines have suffered from poor 

 management. There is every evidence that they should yield good paying ores, with 

 modern appliances and good management. 



1129. Shaw, A. Tin of Mount Bischoff, Blue Tier, and River Ringarooma. 



Rep. Mines Dept., for 1SS3-18S4, IL A. Paper, No. 70, 1884. 

 Not available to the authors. 



1130. Shaw, B. Tin of Mount Bischoff, Mount Heemskirk, Blue Tier, Moorina, 



and Gladstone. 



Rep. Mines Dcpt., 1S84-18S.5, IL A. Paper, No. 58, 1885. 

 Not available to the authors. 



