HEPATINERZ. 



The name applied to decomposed, liver- 

 brown, tessular crystals of Iron Pyrites 

 (Marcasite). 



Localities. Cornwall. East Tulloch, S. 

 of Loch Tay, in Perthshire. 



Name. — From '^^-aj, liver; in allusion to 

 the colour. 



Hepatixekz, v. Kohell. An amorphous 

 mixture of Brown Iron- ore and ChrysocoUa, 

 from Touriusk in the Ural. 

 Analysis by v. Kohell : 



Silica 9-66 



Protoxide of iron . . 59*00 



Oxide of copper . . . 1300 

 Water . . . . . 18-00 



99-66 

 Hepatite. The name applied to such 

 varieties of Barytes as emit a fetid, sul- 

 phurous, or hepatic odour on being rubbed 

 or heated. They are generally of a yellow 

 or brown colour. It occurs at Buxton, Mat- 

 lock, and Eyam in Derbyshire ; Andrarum 

 and Kongsberg in Norway; Lublin in Gai- 

 licia ; and Albemarle co., N. America. 

 Brit. Mus., Case 52. 



Hercinite, Zippe. A black Spinel found 

 in rolled pebbles, in alluvium. Lustre 

 vitreous. Streak deep greenish-grey. Frac- 

 ture conchoidal. H, 7-5 to 8. S.G. 3-91 to 

 3-95. 



Comp. Fe Al, or an aluminite of iron, in 

 which the protoxide is partly replaced by 

 magnesia. 



Analysis, by Zippe : 



Alumina .... 61'17 

 Protoxide of iron . .35-67 



Magnesia .... 2-92 



99-76 



Localities. The vicinity of Natschetin 

 md Horslau in Bohemia ; where it is used 

 instead of Einery for cutting glass. 



BB infusible. The leek-green powder 

 )n ignition becomes brick-red, and increases 

 }-2 per cent, in weight, in consequence of 

 he protoxide of iron becoming converted 

 nto peroxide. 



Herdepjte, Haidinger. A very rare 

 nineral, much resembhug Asparagus-stone. 

 Ihombic: primary form a right rhombic 

 irism. Colour several shades of yellowish - 

 ,nd greenish-white. Very translucent, 

 ^ustre vitreous, inclining to resinous, 

 kreak white. Verv brittle. Fracture small 

 onchoidal. H. 5. ' S.G. 2-9 to 3-1. 



HESSITE. 



175 



Fig. 229. 



Comp. Probably an hydrous phosphate 

 of alumina and lime with fluorine. 



BB fuses with difficulty to a white 

 enamel. 



Dissolves in muriatic acid when finely 

 powdered. 



Locality. The tin mines of Ehrenfrie- 

 dersdorf in Saxony, imbedded in Fluor. 



Name. After the Baron von Herder, 

 Director of the Saxon Mines at Freyberg. 



Hermannite. See Mangan - amphi- 



BOLE. 



Herrerite, Genth. A carbonate of zinc, 

 containing 3-4 per cent, of carbonate of cop- 

 per. From the mines of Albarradon, Mexico. 



Herschelite, Levy. Occurs in colour- 

 less hexagonal prisms and tables, Avhose 

 lateral faces are streaked horizontally. 

 Colour white. Translucent or opaque. 

 Fracture conchoidal. H. 4-5. S.G. 2-06. 



Comp. (Xa, k) tSi2 + 3A1 sis + 15H. 



Analysis, from Etna, by Damour : 

 Silica .... 47*39 



Alumina .... 20-90 



Lime 0-38 



Soda 8-33 



Potash 4-39 



Water 17-84 



99-23 



Localities. Aci Reale, near Catania in 

 Sicily ; associated with Phillipsite, in crys- 

 tals which are generally closely aggre- 

 gated like those of Prehnite, in cavities of 

 trap. 



Brit. Mus., Case 29. 



Herveleca. An ochre described by 

 Forchamtner. 



FIessite, Fr'dhel. Rhombic. Occurs in 

 coarse-grained masses. Colour between 

 steel-grev and lead-grey. Lustre metallic. 

 Slightly malleable. H. 2 to 3-5. S.G. 8-3 to 

 8-9. 



Comp. Kg, Te, or telluride of silver = 

 silver 62*8, tellurium 37*2 = 100. 



Analysis, from Sawodinski, by G. Rose: 

 Tellurium .... 36-89 



Silver 62-32 



Iron 0*50 



99*71 



