PHYSIOGRAPHY. 



Haidingerite Harmotome. 



245 



forms crystalline coats, of a somewhat botryoidal appearance, over a fer- 

 ruginous Quartz, which covers a rose red variety of Diallogite, resem- 

 bling that found near Freiberg. The same specimen also contained 

 large crystals of Pharmacolite. 



HAIDINGERITE of BERTHIER. (See Grey Antimony.} 



HALLOYSITE. 



Reniform and tubercular masses. Massive ; composition im- 

 palpable. Fracture conchoidal. 



Lustre resinous. Color pure white, or tinged with blue. Trans- 

 lucent on the edges. In water becomes transparent. 

 Sectile, may be indented by the nail, and polished with the finger. 



1. Analysis. 

 By BERTHIER. 



Silica 44-94 



Alumina 89-06 



Water 16-00 



It is found in masses three or four inches in diameter, among ores of 

 iron, zinc and lead, in cavities of transition limestone, at Angleure, near 

 Liege. 



HARD COBALT PYRITES. (See Colaltine.) 



HARMOTOME. Paratoraous Kouphon e-Spar. 

 MOHS. 



Primary form. Right rectangular prism. 

 Secondary "forms. 



Fig. 224. Fig. 225. 



Strontiaiij Scotland, 



