324 FROCEEDINGS OF THE NATIONAL MUSEUM. vol. 58. 



is estimated to contain 30 per cent of tungsten trioxide and had a 

 market value, when mined, of more than SI, 650. The specimen 

 which shows the full width of the vein, is from the Union Mine, 

 Atolia, California, and is a gift from the Atolia Mining Co. This 

 district is the largest producer of scheelite ore in the world. When 

 tungsten ore was in greatest demand during the war, operating com- 

 panies sustained considerable losses through miners stealing small 

 pieces of ore which they sold to illegitimate buyers, it being possible 

 to carry several dollars worth of the high grade ore from the mine in 

 an ordinary dinner pail. A number of excellent smaller specimens of 

 scheelite have also been received from various western mines, espe- 

 cially from various localities in Nevada. 



Wolframite, the most important of the ores of tungsten, is a double 

 tungstate of iron and manganese intermediate between ferberite and 

 hubnerite. Many fine specimens of wolframite have recently been 

 received, many being from little known foreign mines. A specimen 

 showing bladed and columnar black wolframite in quartz (Cat. 90, 

 564) from Eastern Kwangtung Province, China, is a gift from Sir 

 Paul Chater, of Hongkong. A large specimen from Bukuka, 100 

 versts north of Borza station on the trans-Baikalian Railway, Siberia 

 (Cat. 90657), was received from Mr. C. W. Purington. A large speci 

 men showing wolframite in quartz (Cat. 88989) is from the Kam- 

 Mine, Cochabamba, Bolivia; and Mr. B. Bryan has donated an 

 exceptionally good specimen of wolframite (Cat. 90521) from Easley 

 and Inslee's mine, east of La Paz, Bolivia. Mr. Rafael Taborga, of 

 New York City, has donated a series of 30 specimens (Cat. 90435) 

 from the San Antonio mine, Ponga, Oruro, Bolivia, showing black 

 wolframite in quartz largely altered to beautiful canary yellow tung- 

 Btite, the native trioxide of tungsten. Another very fine large speci- 

 men of wolframite (Cat. 90575) received through Mr. J. Morgan 

 Clements is from the Yamomoto Mine, Ryudo, Chushihoku Province, 

 Korea. Among American wolframites may be mentioned a large 

 exhibition specimen of the pure granular wolframite from near Lead, 

 South Dakota, where this mineral occurs in a unique manner as a 

 bedded replacement of dolomitic limestone. This specimen (Cat. 

 90586) is from the Hidden Treasure mine and is a gift of the Home- 

 stake Mining Co. 



The mineral ferberite, the pure iron end member of the wolframite 

 series, is represented in the collection by a complete series of the 

 Boulder County, Colorado, ores, showing all the varieties and associ- 

 ations of both crystallized and massive ferberite ore. One specimen 

 recently received (Cat. 90591) from this district shows ferberite associ- 

 ated with abundant gold tellurides. A specimen of ferberite from 

 near Soldier, Idaho (Cat. 89119), received through Mr. V. C. Heikes, 

 bears a remarkable resemblance to the Colorado ores. 



