MINERALOGY. 541 



An important memoir, containing the result of numerous chemical 

 analyses on the sodalite-sjenite and the associated minerals of the Tunugd- 

 liarfik and Kangerdluarsuk fiords of Southern Greenland, has been pub- 

 lished by J. Lorenzen, of Copenhagen. The chief constituents of the 

 rock are a greenish- white feldspar, arfvedsonite (andaegirite) andsodalite; 

 there also occur eudialyte, nephelite, lepidolite, senigmatite, and a new 

 mineral called steenstrupine (see beyond) ; also at one spot ilvaite with 

 calcite; and finally some zeolites, in particular analcite and natrolite. 

 Analyses are given of most of the minerals mentioned. It is especially 

 interesting to note that the association of minerals is nearly identical 

 with that observed in the syenite of Langesunds fiord of Southern Nor- 

 way. 



4. DISCOVERY OF NEW MINERAL LOCALITIES. 



Not the least important advance in general mineralogy is to be found 

 in the discovery of new mineral localites. Great progress has been 

 made in this direction, particularly in the western part of the United 

 States, where the recent development of gold and silver -mines has 

 brought to light much that is of very great interest. Of general state- 

 ments of American mineral regions are to be mentioned the following 

 works : The mineraU and mineral legalities of Rorth Carolina, by F. A. 

 Genth and W. C. Kerr, wk1> ■ .otes by W. E. Hidden ; The second report 

 of the State mineralogist of California, by H. G. Hanks ; Notes on the 

 mineralogy of Missouri, by Alexander V. Leonliard ; Biennial report of the 

 State geologist of the State of Colorado, by J. Alden Smith. Similar mem- 

 oirs in regard to foreign regions are that by Schmidt on the zinc de- 

 posits at Wiesloch in Baden, and by Cohen on the minerals of the region 

 about Heidelberg, 



In the southwestern Territories of New Mexico and Arizona important 

 mineralogical discoveries have been made. For example, in Arizona, 

 Silliman has called attention to the occurrence of the hitherto very 

 rare mineral vanadinite in beautiful crystals, often of a ruby-red color, 

 in Yuma County, at the Hamburg, Princess, and Red Cloud mines; also 

 of fine wulfenite at the last-mentioned mine ; further of crocoite and 

 other chromium minerals, with yellow vanadinite, at several mines in the 

 Vulture district; of jarosite from the Vulture mine; of thenardite, in 

 large deposits from the Rio Verde, in Maricopa County. W. P. Blake 

 has described beautiful vanadinite with mimetite, wulfenite, &c., from 

 the Castle Dome mines, Yuma County. Various interesting copper 

 minerals have been obtained from the Copper Queen mine, Pinal County; 

 crystallized silver, argentite, &c., from the Silver King mine; beautiful 

 dioptase, almost equal to that from the Kirghese steppes, from near 

 Clifton. The ancient iurquoise locality at Mount Chalchuitl, New Mex- 

 ico, has been recently investigated and good specimens obtained. In 

 Oregon considerable deposits of a hydrous nickel silicate allied to 



