186 Scientific Intelligence, 



Sp.G. = 2'028.E[ = 2. Named after Dr. Ettore Artini, director of 

 the mineralogical collection of the State Museum of Milan. — 

 Cent. f. Min., Geol. u. Palaeon. 1903. No. 5. 



4. Minerals from Leona Heights, Alameda Co., California. — 

 The Leona Heights locality has been mined for some years for 

 sulphuric acid ; the ore body consisting of pyrite with some chal- 

 copyrite and their oxidation products. The latter include the 

 new species Boothite, also crystallized melanterite, pisanite 

 and chalcanthite, and further copiopite, epsomite and alunogen. 

 Boothite occurs massive with crystalline structure, also fibrous 

 and rarely in incomplete crystals. The crystallization is mono- 

 clinic and the form related to that of melanterite and of pisanite, 

 with which it may be regarded as forming an isomorphous series. 

 Analyses of the fibrous and massive mineral, after deduction of 

 the insoluble portion, gave concordant results and led to the 

 formula CuSO^.TH^O or, since six-sevenths of the water goes off 

 above 105°, ,H^O.CaS0^4-6H^O. This species is named by W. 

 T. ScHALLER after Edward Booth, Department of Chemistry, 

 Univ. of California. — Univ. California, Bull. Geol., iii, 191, 1903. 



5. Palacherite, a new mineral. — A. S. Eakle has named, after 

 Dr. Charles Palache, a new hydrous basic sulphate of iron and 

 magnesia from the Redington mercury mine, Knoxville, Cali- 

 fornia. It occurs in loosely coherent aggregates of minute mono- 

 clinic crystals of a deep brick-red color. The hardness is l'o-2, 

 specific gravity 2 '075, luster vitreous, streak pale yellow. The 

 formula given is Fe„03.2Mg0.4S03 + 15H,0, deduced from the 

 following average of several analyses : 



SO3 88-37rFea03 19-51, MgO 9-35, H2O (above 100°) 12-75, H2O (100°) 19-53= 

 99-51 



— Univ. California, Bull. Geol., iii, 231, 1903. 



