294 PHYSIOGRAPHY. 



Kupaphrite. 



1. It consists of sulphuric acid and oxide of copper. 



2. It accompanies Red Copper-Ore, and conies from Werchetori in 

 Siberia. 



3. In chemical composition it resembles Brochantite, but this sub- 

 stance occurs in thin rectangular tables, whose angles are truncated, 

 and edges bevelled, without any traces of cleavage. 



KORNITE. 



An impalpable variety of Quartz, (q. v.) of a dull green color, 

 a feebly vitreous lustre, and conchoidal, or splintery fracture : 

 with sp. gr. = 2-8 ... 2-9. It is also called Splintery Hornstone. 



KOUPHOLITE. (See Prehnite.) 

 KROKALITE. (See Mesotype.) 



KROKYDOLITE. 



Massive : composition columnar, particles of composition thin 

 and parallel ; impalpable, when the fracture is uneven or splintery. 

 Color indigo-blue. 



Hardness = about 4-0. Sp. gr. = 3-200 . . . 3-265. 

 1. Before the blow-pipe, it easily melts into a shining black glass, 



which is magnetic. 



2. Analysis. 



By STROMEYER. 



Fibrous variety. Compact variety. 



Silica . . 50-81 . . . 51-64 



PrQtoxide of iron . 33-88 , . . 34-38 



Soda . . 7-03 . . . 7-11 



Water . . 5-58 . . . 4-01 



Magnesia . . 2-32 . . . 2-64 



Lime . . 0-02 . . . 0-25 



3. Its localities are Orange River, Africa, Greenland, Norway and 

 Golling Salzburg. 



KUPAPHRITE. Prismatic Euchlor e-Mica. 

 MOHS. 



Primary form. Right rhombic prism, dimensions un- 

 known. 



Secondary form. Primary, having the acute lateral 

 edges truncated. 



