290 PHYSIOGRAPHY. 



Karpholite Kerasite. 



Lustre silky. Color high straw-yellow, sometimes ap- 

 proaching to wax-yellow. Opake. 



Hardness =4-5 . . . 5-5. Sp. gr. = 2-935. 



1. It intumesces before the blow-pipe, becomes white, and melts im- 

 perfectly into a coherent mass. 



2. Analysis. 



By STEINMANN. By STROMEYER. 



Silica - - 37-53 - - - 36-154 



Alumina - - 26-48 - - - 28-669 



Protoxide of manganese 17-09 - - - 19-160 

 Protoxide of iron - 5-64 ... 2-290 



Lime 0-00 - - - 0-271 



Fluoric acid - - 0-00 - - - 0-470 



Water - - 11-36 - - - 10-780 



3, It occurs in granite at Schlackenwald in Bohemia, accompanied 

 by Fluor and Quartz. 



KARPHOSIDERITE. 



Reniform masses ; rarely, also, granular. Fracture uneven. 

 Lustre resinous ; shining and glimmering in the streak. Color 

 straw-yellow. 



Hardness = 4-0 ... 4-5. Feels greasy. Sp. gr. = 2'5- 



1. Before the blow-pipe, upon charcoal, it becomes black ; and melts, 

 in a strong fire, into a globule, which is attractable by the magnet. In 

 glass of borax, it is easily soluble ; and with salt of phosphorus, it melts 

 into a black scoria. It contains oxide of iron, phosphoric acid, water, 

 with small quantities of oxide of manganese and zinc. 



2, It occurs in Greenland. 



KABSTENITE. (See Anhydrite.) 



KERASITE. Peritomous Lead-B ary te. 

 HAIDINGER. 



In radiated masses. 



Cleavage highly perfect and easily obtained, parallel to 

 a right rhombic prism of 102 27 ', and in the direction 

 of its shorter diagonal. Fracture imperfectly conchoidal, 

 to uneven. 



