394 The American Geologist. December, 1903 
limestone, sometimes in one and sometimes in the other, but more com- 
monly in the greenstone. The ore minerals are native copper and the 
sulphides (chalcocite, bornite and chalcopyrite) which are superficially 
altered in small part into oxides and carbonates; bornite is the usual ore 
of the district. The deposits may be divided into vein and "bunch" de- 
posits, the former being more important ; the latter appear to be segre- 
gations in the greenstone, borne encouraging results have come from 
the prospecting which has been done in a few places. The authors call 
attention to the fact that the present deposits at the surface probably 
represent the enriched sulphide zone, and that lean sulphide deposits 
(chalcopyrite) will probably be encountered at no great distance be- 
low the surface. 
The copper deposits just mentioned are south of the Wrangell moun- 
tains. The results and prospecting north of these mountains and with- 
in the limits of the district here reported on were not extremely encour 
aging up to the end of the summer of 1902. but copper was found in a 
number of localities. 
Other mineral resources of the district are here discussed ; they are 
gold, silver, platinum, tin. mercury, osmiridium, iron and coal. Geld 
is the most important of these and has been found in small amounts in 
several places, the most important of which is the Shistochina field, a 
placer district from which the output for 1902 is estimated at $225,000. 
In the diorite of the Nebesna River region gold is found in small quan- 
tities apparently combined with the pyrite which is so freely dissem 
miated through the rock. The reported occurrences of platinum in the 
gravels of the Nadina river were not confirmed by examinations made 
by Messrs. Mendenhall and Schrader. Coal has been reported from a 
few localities, but as yet little is known concerning its occurrence and 
value. U. s. G. 
On a >iezv lilac-colored transparent spodumene. By George Frederic 
Ki'xz. Science, N. S. vol. 18, p. 280. Aug. 28. 1903. 
Kunsite, a new gem. By Charles Baskerville. Science. X. S. 
vol. 18, pp. 303-304. Sept. 4. 1903. 
Spodumene from San Diego Co.. California. By Waldemar T. Schal 
ler. Bull. Dept. of Geol. Univ. of Calif., vol. 3. pp. 2^5 -.75. pi" 
25-27, Sept.. 1003. 
Recent finds of deep amethystine purple, rose and magenta colored 
spodumene have been reported from near Pala in San Diego county, 
California, and to these the name kunzite has been applied as a desig- 
nation for gem spodumene of these colors. The first two articles listed 
above are short papers dealing with this find, while the last p.ip':r gives 
more detailed facts concerning the occurrence, crystallography, etch 
figures, physical properties and chemical composition of this spoduniene. 
The spodumene occurs in a pegmatyte dike (which cuts a basL- dior- 
yte) in connection with other lithia minerals, as lepidolite and toin- 
maline. The spodumene. however, occurs in pockets and seem> to be 
of later date of formation than the tourmaline and the other minerals 
of the pegmatyte. u. s. g. 
