NO. 2 BIBLIOGRAPHY OF TIN HESS 233 



MINERALOGY (Continued) 

 TWEEDY, W. M. See No. 478. 



Pseudomorphs after feldspar. 



1646. ULKE, TITUS. A new tin mineral in the Black Hills. 



Trans. Amer. Inst. Mg. Eng., Vol. 21, 1893, New York, pp. 240-241. 



Mr. Ulke has named this new tin mineral " Cuprocassiterite." " Cuprocassiterite 

 is a light-yellowish to malachite-green mineral of an earthy fracture, dull glance, and, 

 in the Etta mine, found with cassiterite filling cavities in a compact quartz gangue. 

 Hardness, 3, specific gravity, nearly 5, streak, white." 



Analysis: 62 per cent Sn, 13 per cent Cu, and 6 per cent H 2 0, with traces of 

 iron and silica. 



1647. VLAANDEREN, C. L. Bepaling van de hoeveelheid tinoxyde in tinerts 



aanwezig. 



Jaarb. Mijmv. Ned. Oost-Indie, 1872, I, Amsterdam, pp. 269-273. 



1648. VOGT, J. H. L. Kiinstliche Bildung von Kassiterit durch einen ein- 



fachen Oxydationsprocess ohne Gegenwart von sogenannten " agents 

 mine'ralisateurs." 



Zeitschr. Kryst. Min., Vol. 31, 1899, Berlin, pp. 279-280. 



1649. WOOLNOUGH, W. G. Symmetrically distorted crystals from Western 



Australia. 



Journ. Proc. Roy. Soc. New South Wales, Vol. 35, 1901, Sydney, pp. 332-335, pi. 1. 



Crystals of cassiterite from Pilbarra, West Australia, are so distorted as to appear 

 monoclinic. Intergrown with monazite which the author thinks may have caused the 

 distortion. 



See Molengraaff, G. A. F. (No. 1052) for similar crystals from Swaziland, also, 

 Lacroix, A. (No. 516) for like distorted crystals from France. 



