170 HARRINGTONITE. 



When finely pounded, perfectly decom- 

 posed by muriatic acid, fhough with diffi- 

 culty, silica being separated in the pulveru- 

 lent state. When powdered and thrown on 

 charcoal emits a greenish-yellow phospho- 

 rescent light. 



Localities. — Scotland. Abundantly at 

 Strontian in Argyleshire, in fine white and 

 translucent crystals, with Calcite and 

 Barytes, in mineral veins in granite near its 

 junction with gneiss. (See Morvenite.) 

 Figs. 223, 224, 225. Near Old Kilpatrick in 

 Dumbartonshire, in small colourless crystals 

 associated with Edingtonite and Cluthalite. 

 Campsie Hills, Stirlingshire, _fig. 223. — Ire- 

 land. The Giant's Causeway, in basalt, fg. 

 223. — Foreign. The cruciform varieties chiefly 

 occur at Andreasberg in the Harz, in metal- 

 liferous veins, traversing clay-slate, gener- 

 ally in druses. Oberstein in Deux-ponts, 

 in single crystals in the hollows of siliceous 

 geodes. Kongsberg, in Norway, on gneiss. 



Name. From a.^u.o?, a joint, and 'ri/Mvu, 

 to cut; in reference to the division of which 

 the crystals are susceptible at the junction 

 of the planes of the pyramid. 



Brit. Mus., Case 29. 



31. P. G. Horse-shoe Case, Nos. 1162, 

 1163. 



Harringtonite, Thomson. An amor- 

 phous variety of Mesolite. Occurs massive, 

 of a chalkv Avhite colour. Opaque. Earthy, 

 Very tough, H. 5-25. S.G. 2-21. 



Comp. (Na, Ca2) 3Si + 3A1 bi + 6H. 



Analysis, by TJiomson : 



Silica . ' , . . . 44-84 



Alumina .... 28-48 



Lime 10-68 



Soda 5-56 



Water ..... 10-28 



99-84 



Localities. — Irish. In veins and layers 

 traversing greenstone at Portrush, and at 

 the Skerries, co. Antrim, Magee Island, and 

 Agnew's Hill, west of Larne. 



Harrisite, Genth A Vitreous Copper 

 with cubical cleavage, from the Canton mine 

 in Georgia, U.S. 



Harteraunstein, Hausmann. See 

 Braunite. 



Hartine, Schrotter. A resinous mineral 

 resembling Hartite. It occurs massive, of a 

 white colour, and is without taste or smell. 

 Pulverises between the fingers. Melts at 

 210° C. (410° P.), and distills at 260° C. 

 (500° F.). 



Comjy. C30, H17, 02. 



HATCHETTIXE. 



Analysis, by Schrotter : 



Carbon 78-26 



Hydrogen . . . .1092 

 Oxygen .... 10-82 



100-00 



Locality. Oberhart, in Austria, in Brown 

 Coal. 



Hartite, Haidinger. A fossil resin re- 

 sembling wax in appearance. Colourless or 

 grevish-white, with a somewhat greasy lus- 

 tre." Translucent. Brittle. H. 1. S.G. 1-04 

 to 1-06. 



Comp. C6, H5 = carbon 87-473, hydrogen 

 12-048-100. 



Fuses at 165° F. to a clear fluid, and at a 

 high temperature distills. 



Easily soluble in ether, less readily in 

 alcohol,"and crystallizes from each on evapo- 

 ration. 



Localities. Oberhart, near Gloggnitz, in 

 Lower Austria, in small tables with six 

 faces, in Brown Coal. Kozenthal, near Kof- 

 lach, in Styria, in comparatively large, irre- 

 gular, perfectly transparent, and cleavable 

 pieces, showing, in the polarising apparatus, 

 very distinct S3'Stems of elliptical coloured 

 rings; and, still more frequently in the lig- 

 nite, in small veins, incrustations or angular 

 fragments, 



Hartite is distinguished from Scheererite 

 by its crystallization, and by fusing at a 

 higher temperature. 



Brit. Mus., Case 60, 



Hartkobalterz, X g Skuttekudite. 



Hartkobaltkies.) 



HaRTMANGAN, 1 g ps^LOMELANE. 



HART3IA1S^GANERZ. I "^^ -^ 



LIartmannite. See Ullmannite. 



Harzige Stein-kohie, Haidinger. Bi- 

 tuminous Coal, See Coal, 



Harzlosb Stein-kohle, 3Iohs. See 

 Anthracite, 



Hatchettine, Conyheare, Phillips. A 

 Mineral Tallow, Occurs either flaky like 

 spermaceti, or subgranular like bees-wax. 

 When flaky it has a shghtly glistening and 

 pearly lustre, and a considerable degree of 

 translucency ; when subgranular it is dull 

 and opaque. Colour yellowish-white, to 

 wax- and greenish -yellow, but becomes 

 darker and more opaque on exposure. Feels 

 greasy. About the consistency of soft tal- 

 low. S.G. at 60° F. 0-916, 



Melts at 115° F. into a transparent colour- 

 less liquid, which becomes opaque and white 

 on cooling. Slightly soluble in cold ether, 

 more so in hot ether; on cooling the solu- 

 tion coagulates into a mass of minute pearly 

 fibres. Sparingly soluble in boiling alcohol, 



