HAUERITE. 

 from which it precipitates again on cooling. 

 Heated cautioush^, it distills over without 

 change. 



Comp. (C, H). 



Analysis, from Merthyr-Tydvil, by John- 

 ston : 



Carbon .... 85910 

 Hydrogen .... 14-624 



100-534: 



Localities. — British. Ebbw Vale, and 

 neighbouring works, near Merthyr-Tydvil, 

 in Glamorganshire; in masses, resembling 

 wax or train-oil, in the crevices of coal- 

 measure Clay Ironstone. Near Loch Fvne, 

 in Argyleshire. Below the Hutton seam, at 

 Pelton''Colliery, Chester-le-Street. Urpeth 

 Colliery, near Newcastle, in cavities near the 

 side of a fault, and sometimes in the solid 

 sandstone rock, at a depth of about 60 

 fathoms fi'om the surface. — Foreign. Eos- 

 sitz, in Moravia. 



Na?ne. In honour of the eminent chemist, 

 Hatchett. 



Brit. Mus., Case 60. 



M. P. G. Horse-shoe Case, No. 103. 



Hauerite, Haidinger. Cubical ; hemi- 

 hedral like Pyrites ; * octahedral the most 

 common form. Sometimes occurs in crystals 

 clustered into spheroidal forms. Colour 

 reddish-broAvn to brownish-black. Lustre 

 metallic-adamantine. Streak brownish-red. 

 H. 4. S.G. 3-463. 



Comp. Mn S2 = manganese 46 "3, sulphur 

 53-7 = 100. 



Analysis, by Patera : 



Sulphur .... 53-64 

 Manganese .... 42-97 

 Iron . . . . . 1-30 

 Silica 1-20 



99-11 



BB is reduced to a simple sulphide (Mn 

 S), with the evolution of much sulphur; 

 -with soda affords a manganese reaction. 



Locality. The sulphur pits at Kalinka, 

 near Neusohl, in Hungary, in clay, asso- 

 ciated with Gypsum and Sulphur. 



Name. After Privy Councillor Von Hauer, 

 and because of the part which his son, F. v. 

 Hauer, took in the determination of the 

 species, 



Brit. Mus., Case 5. 



Hausmannite, Dana, Phillips. PjTa- 

 midal. Occurs crystallized in acute, square- 

 based pyramids ; also massive. Colour 

 brownish- or iron-black. Lustre semi -me- 

 tallic. Opaque. Yields a reddish- or chestnut- 

 brown powder, which dissolves in cold con- 

 centrated sulphuric acid, forming a red 



HAUYNA. 171 



solution. Vervhard. Fracture uneven. 11.5 

 to 5 5. S.G. 4-72. 



Comp. Mn M:n, or Mn 31-03, ^n 69-07 = 

 manganese 72-1, oxygen 27*9 = 100. 

 Analysis, from Ihlefeld, by Turner : 

 Protoxide and peroxide of 

 manganese . . . 98'09 



Excess of oxyger 

 Baryta . 

 Silica . 



Jletallic chloride 

 Water . 



. 0-22 



. 0-11 



. 0-33 



. trace 



. 0-44 



100-00 



BB on charcoal fuses at the edges ; with 

 borax readily forms a deep violet-blue or 

 nearly black globule, with soda a green 

 slag. 



Dissolves in heated muriatic acid, with 

 the evolution of chlorine. 



Localities, ^hrenstock, near Ilmenau, in 

 Thuringia, in veins of porphyry, with other 

 ores of manganese. Ihlefeld, in the Harz. 

 Framont, in Alsace. Lebanon, Pennsylvania, 

 U.S. 



Name. After Professor Hausmann, of 

 Gottingen. 



See Rancierite. 



Brit. Mus., Case 13. 



M. P. G. Principal Floor, Wall-cases 13 

 (British). 



Haxjyna, Karsten. Haijyne, Phillips. 

 Cubical. Occurs often in distinct rhombic 

 dodecahedrons, but generally in crystalline 

 grains, and massive. Colour ind"^igo-blue 

 and opaque, or blue or bluish-green and 

 translucent. Lustre vitreous to greasy. 

 Streak bluish-white. Very brittle. Frac- 

 ture flat-conchoidal, and very splendent. 

 H. 5-5. S.G. 2-4 to 3-0. 



Comp. Na3 Si + 3'Al Si + 2Ca S = silica 

 32-1, alumina 27-3, lime 9'9, soda 16-5, sul- 

 phuric acid 14-21=100. 



Analysis, from Monte Albano, bj^ Whit- 

 ney: 



Silica 32-44 



Sulphuric acid . . . 12-98 

 Alumina .... 27-75 



Lime 9-96 



Potash. .... 2-40 

 Soda 14-24 



99-71 

 BB alone, on charcoal, decrepitates, and 

 melts slowly to an opaque white or green- 

 ish-blue blebby glass; with borax effer- 

 vesces and forms a transparent glass, which 

 becomes yellow on cooling. 



