H 2 



F 





1-56 



2-77 



0-15 r 



009 = 



= 99-70 

 = 9986 



246 Scientific Intelligence. 



8. Brief notices of some recently described minerals: Asto- 

 chite. A kind of ampbibole, near richterito, from Langban, 

 Sweden. It occurs as a coarse crystalline, columnar aggregate, of 

 a blue to grayish violet color. Cleavage-angle 56° 27'; extinc- 

 tion 15° 40' blue to 17° 15' violet; sp. gravity = 3'05, 3-10. 

 Analyses by Mauzelius, are, as follows, 1 for the blue, and 2 for 

 the violet variety : 



SiO a FeO MnO ITgO CaO Xa 2 K 2 



1. 56-25 0-15 6-49 21-89 5-44 617 1-60 



2. 54-76 0-21 12-71 17-82 5-83 4-02 L-65 



This yields a normal metasilicate formula. Described by H. 

 Sjogren in G. For. Fork., xiii, 605, 1891. 



Ac-elite. A basic arsenate from Nordmark and Langban. 

 It occurs in masses of a gray color; hardness = 5 ; sp. gravity = 

 3*76. Analyses agree closely with the composition H„0 . 2CaO . 

 2MgO . As„0 5 . and a connection with either the olivenite or 

 wagnerite group is suggested. Described by Sjogren, ibid., p. 

 781. 



Svabite. A mineral from the Harstig mine, Pajsberg, referred 

 by Sjogren (I. c.) to the apatite group. It occurs in colorless 

 hexagonal prisms terminated by the pyramids, 1011 and 1121 ; the 

 vertical axis is 0-7143 (apatite 0*7346). The composition is given 

 by the formula H 2 0. lOCaO. 3As a 6 . 



Boleite. An oxychloride of lead and copper occurring at the 

 Boleo copper mines, near Santa Rosalia, Lower California. It 

 occurs in cubic crystals of an indigo-blue color, which show 

 anomalous optical phenomena; there are also crystals in tetragonal 

 octahedral forms having the same composition. These are re- 

 garded by the describers, MM. Mallard and Cumenge, as identical, 

 but the cubic crystals can hardly be other than percylite, only 

 differing in containing 9 p. c. of silver.- C. M., cxiii, 519, 1891. 



Lautarite. A calcium iodate from Atacama, occurring in 

 large prismatic crystals referred to the monoclinic system. It is 

 colorless to yellow; sp. gravity = 4-59. Composition Ca(I0 3 )„, 

 and hence belonging to a class of compounds not before repre- 

 sented among minerals. The same region furnishes crystals 

 having a composition approximating to Ca(I0 3 ) 2 . Ca CrO s . De- 

 scribed by Dietze, Zs. Fry St., xix, 447, 1891. 



Morinite. A phosphate of alumina and soda, not yet an- 

 alyzed, occurring in monoclinic crystals with the amblygonite of 

 Montebras, France. Described bv Lacroix, Bull. Soc. Min., xiv, 

 187, 1891. 



OBITUARY. 



Thomas Sterry Hust. — Mr. Hunt was born at Norwich, Con- 

 necticut, in September, 1826, and died in New York on the 12th 

 of February, 1892. The year 1845 and 1846 he spent at New 

 Haven, Conn., in the chemical laboratory of B. Silliman, Jr., 

 who was then assistant to his father in the chemical department 

 of Yale College. He pursued his chemical studies with great 



