656 SCIENTIFIC RECORD FCR 1884. 



from Texas, Pa. It is properly colorless and transparent, but some 

 times lias a black metallic color from included microscopic crystals ol 

 magnetite. The luster is silky. The hardness is 6. It is difficultly 

 fusible to a black magnetic slag. An analysis makes it a bisilicate of 

 iron and manganese, with a little magnesium and calcium. The locality 

 is the iron mine of Hillaug, Ludvika parish, Sweden ; it occurs with 

 garnet, magnetite, and igelstromite. {Bull. Soc. Min., vii,232.) 



KonincTiite. — Described by Cesaro as a new hydrated phosphate of iron, 

 corresponding to the formula re2P208 + 6 H2O. It occurs in small 

 globular or semi-globular forms, consisting of radiating needles, which 

 are translucent and almost colorless, and are to be referred to the mono- 

 clinic system. It has a vitreous luster, a hardness of 3.5, and a specific 

 gravity of 2.3. It fuses readily to a black bead. Koninckite is found 

 with the fluo-phosphate of iron, richellite, recently described by the 

 same author at Vise, Belgium. It is named after Prof. De Koninck, of 

 Liege. [Ann. Soc. Oeol. Belg., xi, 247.) 



Manganostibiite. — Still another new mineral from Nordmark, Sweden. 

 According to Igelstrom, it occurs in black grains, i^robably to be re- 

 ferred to the orthorhombic system. These are found in crystalline lime- 

 stone with other manganiferous minerals, as hausmannite, pyrochroite, 

 allaktite. An analysis leads to the formula 5 MuO (Sb, As)2 O5, with 

 the antimony predominating. The name refers to its composition as 

 containing both manganese and antimony (stibium). {Geol. For. Fork., 

 Stockholm, vii, 210 ; Bull. Soc. Aim. France, vii, 120.) 



Polylithionite. — A variety of lithia mica described by Lorenzen as 

 occurring at Kangerdluarsuk, Greenland, with rinkite (see below), arved- 

 sonite, tegirite, eudialyte, &c. It is found in pale green to white six- 

 sided tabular crystals. These are divided, after the manner of zinn- 

 waldite, into six sectors, with striations diverging from the center; the 

 optical characters are also very near those of zinnwaldite. In composi- 

 tion it shows a higher percentage of silica and lithia, less alumina, and 

 almost no iron. The name has reference to the large amount of lithium. 

 {Zeitsch. Kry.st., ix, 251.) 



Rinkite. — Associated with the lithia mica just described, and with the 

 other minerals named, is a mineral to which Lorenzen has given the 

 name rinkite, after Dr. Eink. It occurs in monoclinic crystals, tabular 

 in habit, parallel to the orthopinacoid. The color of the fresh mineral is 

 yellowish-brown, but the crystals are often slightly altered on the sur- 

 face, and these straw-yellow. The luster is vitreous to greasy. The hard- 

 ness is 5, the specific gravity 3.46. An analysis shows it to be a titauo- 

 silicate of the cerium metals and calcium with sodium fluoride. [Ibid.) 



Salniite. — This is a manganesian variety of chloritoid from Vielsalm, 

 Belgium, described by Eug. Prost. It occurs in irregular masses with 

 coarse saccharoidal structure and grayish color. The hardness is 5 to 

 G, and the specific gravity 3.38 ; this determination, however, is a little 

 low, in consequence of admixed quartz. An analysis shows the pres- 



