402 



WAGNERITE. 



Almost wlioily soluble in muriatic acid. 



Localities. — JEnglish. Upton Pyne, Devon- 

 shire, in very light masses of a dark-brown 

 colour. Near Redruth (Huel Buckets, &c.) in 

 Cornwall. Near Middleton, at the Ball Eye 

 Mine, near Bonsall, and elsewhere, in Der- 

 byshire. — • Scotch. Leadhills (pseudomor- 

 phous after Calcite). Hoy Head, Orkneys. 

 — Foreign. The Harz, at Elbingerode, 

 Iberg, &c. Franconia. Siegen, in Prussia. 

 Nassau. Piedmont. France. 



Brit. Mus., Case 13. 



Wad is sometimes an abundant and valu- 

 able ore of manganese, though it seldom 

 occurs in large masses, and forms the den- 

 dritic markings frequently seen on chalk, 

 limestone, Steatite, &c. It is chiefly used 

 in the manufacture of glass, for colouring 

 and glazing pottery, and as a coarse pig- 

 ment in oil-painting. Like Bog Iron-ore, it 

 results from the decomposition of other ores. 

 It consists chiefly of oxides of manganese 

 and water, with oxide of iron, and frequently 

 small proportions of alumina, baryta, lime, 

 silica, &c. 



Name. The name is in allusion to the 

 light forms, like wadding, which this mineral 

 assumes. 



Wagnerite, Fuchs, Dana, Phillips. Oc- 

 curs in very complicated crystals, apparently 

 short prisms with verucal strias. Colour 

 various tints of yellow, often greyish. Trans- 

 lucent. Lustre vitreous. Streak white. 

 Fracture conchoidal or splintery. H. 5 to 

 5-5. S.G. 2-98, untransparent ; 3-068 trans- 

 parent. 



Comp. Phosphate of magnesia with fluo- 

 ride of magnesium, or 3Mg P + Mg F. 



Analysis, by Rammelsherg; 



Phosphoric acid . . . 40'61 

 Magnesia .... 46-27 

 Protoxide of iron . . . 4-59 

 Lime ..... 2*38 

 Fluorine .... 9-36 



103-21 



BB alone, fuses with difficulty to a dark 

 greenish-grey glass. 



In a powdered state dissolves slowly in 

 warm nitric and sulphuric acid, with evolu- 

 tion of fumes of hydrofluoric acid. 



Locality. Austria, in the valley of Hol- 

 lengraben, near Werfen, in Salzburg, in 

 veins of Quartz traversing clay-slate. 



Name. After von Wagner, Director of 

 Mines in Bavaria. 



Brit. Mus., Case 57. 



Walchowite, Haidinger, Dana. A 



WASSERKIES. 



mineral resin occurring in rounded trans- 

 lucent masses, often striped with brown. 

 Lustre resinous. Streak yellowish-white. 

 Fracture conchoidal. H. 1-5 to 2. S.G. 1 

 to 1-07, 



Comp. 0^3 H90 = carbon 80-41, hydrogen 

 10-66, oxygen 8-93 = 100. 



Fuses to a yellow oil at 482° F., and burns 

 readily. 



In sulphuric acid forms a dark brown so- 

 lution. 



Locality. Walchow, in Moravia ; in Brown 

 Coal. 



Walkerde, Werner, \ See Fuller's 



Walktiion, IIaus7nann.) Earth. 



Wall Saltpetre. See Nitrocalcite. 



Walmstedtite. a name given to Breun- 

 nerite (which see), in honour of Walra 

 stedt, the Swedish chemist. 



Wandstein. See Rohe Wand. 



Warwickite, Shepard. Borotitanate of 

 magnesia and iron. Crystallizes in rhombic 

 prisms, with their obtuse edges truncated, 

 and the acute edges bevelled. Colour dark 

 hair-brown to dull black. Appears trans- 

 luqent at the thin edges, and of a reddish 

 brown colour. Lustre submetallic ; on clea- 

 vage-surfaces pearly. Streak bluish-black. 

 Brittle. Fracture uneven. H. 3 to 4. S.G. 

 3-188. 



BB alone, infusible; but becomes paler. 



Localities. S. W. of Edenville, New 

 York, U. S. ; in granular limestone. 



Washingtonite, Shepard. A titaniferous 

 iron nearly allied in composition to Hysta- 

 tite. Occurs in large hexagonal tables with 

 the faces of the rhombohedron. H. 5-75. 

 S.G. 496 to 5-01. 



Analysis, from Connecticut, by Marignac : 



Titanic acid . . . 22-21 



Peroxide of iron . . . 59*07 

 Protoxide of iron . . 18-72 



100-00 



Localities. Westerly and Litchfield, Con- 

 necticut, U. S. 



A similar ore is said by Greg & Lettsom 

 to occur, of a steel -grey colour, at Breaghy 

 Head, co. Donegal ; and in lamellar crys- 

 talline masses at Ballinascreen, co. Derry. 



Wasserblei, Werner. See Molybde- 

 nite. 



Wasserglimmer, Morin. Mica con- 

 taining or inclosing watei*. 



Wasserkies, Glocker. A variety of 

 White Iron Pyrites from Moravia and Upper 

 Silesia, containing water in chemical com- 

 bination. H. 3 to 4. S.G. 3-3 to 3-5. 



