MANGANESE-SPAR, 



others forming an angle of 87 5', according to 

 ROSE, being the angle of Pyroxene. 



Massive. Composition fine granular, strongly co- 

 herent. 



Lustre intermediate between pearly and resinous. 

 Colour rose-red. Translucent on the edges. 



Brittle. Hardness = 5-0 ... 5-5. Sp. Gr. = 3-538, 

 BERZELIUS; = 3-685, BREITHAUPT. 



Heated before the blowpipe, it becomes dark-brown, and 

 melts into a reddish-brown globule. The colour it im- 

 parts to glass of borax in the oxidating flame is hyacinth- 

 red ; but in the reducing flame the glass remains white. 

 According to LAMPADIUS and BERZELIUS, it consists of 

 From Siberia. From Sweden. 



Oxide of Manganese 6 1 -00 54-42. 



Silica 30-00 48-00. 



Oxide of Iron 5-00 a trace. 



Alumina 2-00 0-00. 



Lime and Magnesia 0*00 3-34. 



It is found at Longbanshyttan in Sweden in beds of 

 iron- ore, near Elbingerode in the Harta, and in the district 

 of Catharinenburg in Siberia ; also near Callington in Corn- 

 wall, and other places. 



The substances called Allagite, Corneous Manganese, Pho~ 

 tizlte and Rhodonite, appear to be compact varieties of the 

 present species, occasionally mixed with a variable quantity 

 of the macro typous Parachrose-baryte. They have been 

 analysed, the first byDu MENIL, the others by BRANDES, 

 and found to consist of 



AUagite. Com. Mang. Photizite. Rhodonite. 



Oxide of Manganese 75-00 57-16 37-39 49-87. 



Silica 16-00 35-00 36-00 39-00. 



Carbonic Acid 7-50 5-00 14-00 4-00. 



Water 0-00 2-50 6-00 6-00. 



Oxide of Iron 0-00 0-25 0-50 0-25. 



Alumina 0-00 0-00 6-00 0-12. 



