404 WEHRLITE. 



teuil, in France. Halle and Mori, in Prussia, 



in plastic clay. 



Name. After Professor Thomas Webster. 

 The Pyrites in the clay, on decomposition, 

 /orms sulphate of alumina ; which again 

 being decomposed by the underlying chalk, 

 — aluminous earth, Selenite, and oxide of 

 iron, are the results. 

 Brit. Mus., Case 55. 

 31. P. G. Horse-shoe Case, No. 1120. 

 Wkhrlite. The name given by Von 

 Kobell to a massive granular mineral, which 

 is probably a variety of Lievrite. Colour 

 iron -black. Streak greenish-grey. Slightly 

 magnetic. H. 6 to 6*5. S.G. 3'9. 

 Analysis bv TVehrle ; 

 Silica .".... 34-60 

 Peroxide of iron . . . 42-38 

 Peroxide of manganese . 0-28 

 Alumina . . . . 0'12 

 Protoxide of iron. . . 15-78 



Lime 5-84 



Water ..... 1-00 



100-00 



BB fuses with difficultj^ at the edges. 



Imperfectly soluble in muriatic acid. 



Locality/. Szurzasko, in Hungary. 



Name. After Adolph Wehrle, Austrian 

 Councillor of Mines, by whom it was first 

 analysed. 



Brit. Mus., Case 34. 



Weichbraunsteix. See Pyrolusite. 



Weicheisenkies, BreithaupL See Was- 



SERKIES. 



Weichmangan. See Pyrolusite. 

 Weiss -BLEiERZ, Werner. SeeCEEUsixE. 

 Weisser-speiskobold, Werner. See 

 Smaltine. 



Weissgiltigerz, Werner. Silver Fahl- 

 ore. See Tetrahedrite. 

 Weissian. See Scolecite. 

 Weissigitb, Jenzsch, Greg 8f Lettsnm. 

 Occurs in small and indistinct crystals, some- 

 times in twins: also massive. Colour 

 white to pale rose-red. Lustre vitreous. 

 Streak white. H. 6-5. S.G. 2-538 to 2-546. 

 Analysis, by G. Jenzsch : 



Silica 64-5 



Alumina I'^'O 



Magnesia . . • .0-9 



Potash 14-6 



Soda and Lithia . . .2-2 

 Water 08 



100-0 



BB fuses easily at the edges to a white 



and somewhat blebby enamel, tinging the 



outer flame slightly red, and yellow at the 



point. With borax forms a colourless glass 



WHEEL-OEE. 



Insoluble in acids, 



Localities. — Scotch. Calton Hill, Edin- 

 burgh, in pseudomorphous crystals of a dull 

 brick-red colour, in trap- rock. Old Kil- 

 patrick, and Long Craig ; Dumbartonshire. 

 Hartield Moss, Renfrewshire. Campsie 

 Hills, Stirlingshire. — Foreign. Weissig, in 

 Saxony, in porphyritic amygdaloid. 



The Scotch and Saxon varieties bear a 

 very close resemblance to each other, and 

 occur under precisely similar conditions ; 

 the former, however, seems to be Albite, 

 the latter Felspar ( Greg §• Lettsom). 



Weissite, Wachtmeister. An altered form 

 of lolite, resembling Fahlunite. It occurs 

 in oblique rhombic prisms, and in kidney- 

 shaped masses of an ash-grey or brownish 

 colour, showing only slight traces of clea- 

 vage. Translucent. Lustre pearly or waxy. 

 Fracture even or coarsely granular. Scrat- 

 ches glass. S.G. 2-8. 



Comp. R3 Si2 + m Si3, or 3(K N Mg Zn 



Mn Fe) sl2 + 2AI Si^ ( Wachtmeister). 



BB on charcoal, whitens, fuses at the 

 edges and becomes surrounded with an 

 areola of zinc-fumes. 



Locality. The Copper mine of Eric Matts, 

 at Fahlun, in Sweden. 



Name. After Weiss, late Professor of 

 ]\Iineralogy in Berlin. 



Brit. Mus., Case 32. 



Weisskupfererz, Hausmann, Werner. 

 See Domeykite. 



Weisskupfererz, Breithaupt. See Ky- 



ROSITE. 



Weissnickelkies, Breithaupt. White 

 Nickel-Pyrites. See Rammelsbergite. 



Weisspiessglanzerz, Hoffmann, Wer- 

 ner. White antimony. See Valentinite. 



WeisspiessglajSTZerz, Ranimelsberg. See 

 Cervantite. 



Weisstellur. See White Tellurium. 



Weiss YLVANERZ, Werner. See Yellow 

 Tellurium. 



Wkrnerite, Haiiy. A name given to 

 Scapolite in honour of the German min- 

 eralogist, A. G. Werner. 



W^heel-ore, or Radelerz. A macled 



Fig. 455. 



-arietyof Bournonite,wbich occurs at Kapnik 



