326 PR0CEED1NO8 OF THE NATIONAL MUSEUM. 



D. Foster Hewett. These deposits, as described by Mr. Hewett/ 

 consist of veins filled with the hitherto unknown minerals quis- 

 queite, a lustrous black sulphur-bearing hydrocarbon, a natural coke, 

 patronite, a black vanadium sulphide, and bravoite, a nickeliferous 

 variety of pyrite. Near the surface these ores have largely oxidized, 

 yielding secondary vanadium compounds, chief among which are 

 hewettite and pascoite, hydrous calcium vanadates. Fine large 

 specimens of all of the minerals of the ore are included in the exhibi- 

 tion series. Since being preserved in the collections many of the 

 specimens of patronite have become coated with the green sulphate 

 of vanadium minasragite. 



A series of vanadium ores (Cat. 90431-90434) from the United 

 States Vanadium Development Co.'s mines near Kelvin, Arizona, 

 donated by Maj. H. S, Bryan, shows crusts of fine red vanadinite and 

 brown to black descloizite coating limestone. Several very large 

 and fine specimens of the vanadiferous sandstone from Colorado have 

 recently been received. 



Aside from the steel-making metals, some fine specimens of anti- 

 mony, bismuth, and rare earth metal ores have been received. 

 Messrs. Root and Simpson, assay ers of Denver, Colorado, recently 

 sent to the museum an unusually large and fine specimen of the rare 

 lead sulphostannate cylindrite from Bolivia. 



Among recently acquired additions to the saline collections is a 

 series of large specimens of sodium salts from the Pintados Salar, 

 Tarapaca, Chile, collected by Mr. Hoyt S. Gale. This large salt 

 deposit in the Chilean desert consists of an upper hummocky layer 

 of irregular blocks of sodium chloride, the crust having been broken 

 and heaved upward by the crystallizing force of the underlying bed, 

 which consists of thenardite or anhydrous sodium sulphate. Mr. 

 Gale has also contributed some beautifully banded specimens of red 

 and white potassium and sodium chlorides from the Amelie Mine, 

 Alsace. These specimens are very shoTs^ and illustrate the seasonal 

 variations in the deposition of the salts. 



Among other materials recently received are large numbers of sets 

 of rocks and ores of various American mining districts transferred 

 by the United States Geological Survey. Much material from the 

 Panama-Pacific Exposition has recently been unpacked and found 

 to contain extensive series of Australian, Bolivian, Brazilian, and 

 Japanese ores. A series of Japanese ores and rocks is being prepared 

 for exhibition as a unit. Other scries from this material to be placed 

 on exhibition include a set of uranium-vanadium ores from Utah, 

 showing the minerals carnotite, volborthite, and calciovolborthitc in 

 sandstone, and a suite of ores from Huitzuco, Mexico, showing the 

 association of stibnite, gypsum, and native sulphur, with the rare 

 mercury ores, livingstonite, barcenite, and ammiolite. 



1 Hewett, D. F., Trans. Amor. Inst. Min. Eng., 1909, p. 291. 



