REPORT OF ISTATIOXAL MUSEUM, 1921. . 83 



precious opal from Nevada, a suite of rare sulphosalts from the Bin- 

 nenthal, Switzerland, and miscellaneous minerals, chiefly from for- 

 eign sources, were obtained through exchange with Ward's Natural 

 Science Establishment. In a like manner were added a number of 

 Italian minerals, received from Prof. Alberto Pelloux, Genoa ; mis- 

 cellaneous minerals from California, including some rare sulphates 

 and an attractive exhibition specimen of beautifully crystallized 

 pink halite from Searles Lake, received from Mr. M. Vonsen, Peta- 

 luma, Calif.; interesting lead and vanadium minerals sent by Mr. 

 C. A. Heberlein, Supai, Ariz.; and a collection of the unusual zeo- 

 lites from North Table Mountain, near Golden, Colo., received from 

 the School of Mines at Golden. 



The Rainbow Ridge Mining Co., through Mr. Archie Rice, New 

 York City, presented a suite of precious opal from their mines in 

 Humboldt County, Nev. These show the variations in the coloring 

 of the opal, ranging from the very dark or) "black" opal to the 

 palest opalescent tints. The collection forms a part of an exhibit 

 composed entirely of opals in the matrix. 



Additional accessions of note include the following gifts: Rare 

 copper minerals from Chuquicamata, Chile, presented by Guggen- 

 heim Bros., New York City; exceptional specimens of wolframite, 

 by J. F. Aguilar Revoredo, Oruro, Bolivia, and of the rare mineral 

 hewettite, by A. O. Egbert, Prescott, Ariz. ; sphenomanganite and 

 catoptrite from Sweden, new to the collections, by Col. W. A. Roe- 

 bling, Trenton, N. J.; inyoite from New Brunswick, by E. J. Arm- 

 strong, Erie, Pa. ; a large specimen of bismuthinite, by W. H. Wey- 

 her, Alta, Utah, and an exceptional specimen of sphalerite, by C. H. 

 Short, Salt Lake City, both obtained through the efforts of Mr. Vic- 

 tor C. Heikes; a large group of fluorspar crystals, by the Diamond 

 Fluorspar Co., Karbers Ridge, 111. ; described specimens of augite 

 and apthitalite, by Dr. Henry S. Washington ; and several examples 

 of semiprecious stones, by F, M. Myrick, Johannesburg, Calif. 



A most important addition to the collection of gems and gem 

 minerals was afforded by the acquisition, through the Frances Lea 

 Chamberlain fund, of 56 cut and uncut tourmalines from Mesa 

 Grande, Calif. The cut forms include both cabochons and facetted 

 stones and show the rich variety of coloring characteristic of this 

 mineral; the crystals are of varying sizes, showing two to three 

 colors in each example. Through the same means were secured 9 

 cabochons of chrysoprase; 6 blue zircons from Queensland, Aus- 

 tralia; 4 carved jades; 2 cabochons of Persian turquoise; 2 cut gems 

 each of Madagascar orthoclase and wernerite; 1 Australian opal 

 carved in the form of a pansy blossom ; 4 blue and yellow Australian 

 sapphires; and an Australian opal, cut cabochon, weighing 31.9 



