862 STIBICONISE. 



BB on charcoal, burns with a blue flame, 

 giving off odours of sulphurous acid, and 

 fuses to a magnetic (generally hollow) glo- 

 bule, having a crystalline surface covered 

 with silver: with borax, (which becomes 

 coloured by iron,) readily yields a globule 

 of silver. 



Decomposed even by cold aqua-regia, with 

 evolution of heat and evaporation of sulphur 

 and chloride of silver. 



Localities. Joachimsthal, in Bohemia. 

 Schneeberg and Johanngeorgenstadt, in 

 Saxony. 



Navie. After Count Caspar Sternberg, of 

 Prague. 



Brit. Mus., Case 10. 



Stibiconise, Beudant. Occurs in amor- 

 phous earthy masses, of a yellow, grey, or 

 brownish colour. Opaque, dull, soft and 

 friable. Sti-eak yellowish-white or grey. 

 Fracture earthy, uneven. H. 5-5. S.G. 5-28. 



Comp. Sb,!Sb + 211 = oxide of antimony 

 45-01, antimonic acid 49-70, water 5-29, or 

 antimony 75-89, oxvgen 18-82, water 5-29 = 

 100. 

 Analysis, by Blum ^ Delffs t 



Antimony .... 75-83 

 Oxygen . . . .19-54 

 Arsenic . „ . . trace. 

 Water ..... 4-63 



100-00 



BB with borax or salt of phosphorus 

 behaves like oxide of antimony. 



Localities. — English. Trewinnick, near En- 

 dellion, Cornwall. — Foreign. Goldkronach, 

 in Bavaria. Bruck, in Rhenish Prussia. 

 Nassau. Erzgebirge, of Saxony. Felso- 

 banya and Kremnitz in Hungary. Spain ; 

 at Losacio, in Gallicia. France : Miaie of 

 Malbosc (Ardeche) ; Ariege (La Vende'e). 

 Tuscany. Morocco. Mexico. 



Name. From stibium, antimony, and 

 xovtf, powder, 



Stibeste, Beudant, Nicols.'l 



Stibium, Pliny. VSee Stibnite. 



2t//^,w./, Dioscorides. J 



Stiblite, Blum, Greg §• Lettsom. See 

 Stibiconise. 



Stibnite, Dana. Rhombic: primary 

 form a right rhombic prism. Occurs crys- 

 tallized in variously modified and terminated 

 rhombic prisms, which are sometimes closely 

 aggregated laterally ; also disseminated ; 

 massive, with along columnar structure ; and 

 iibrous with a plumose, woolly, or felt-like 

 appearance {Federerz). Colour and streak 

 lead-grey, inclining to steel-grey; some- 



STIBNITE. 



times blackish and dull externally, and with 

 an iridescent tarnish. Opaque. Lustre 

 metallic. Sectile. Slightly flexible in thin 

 laminee. Yery brittle. Fracture small- and 

 imperfect-conchoidal. Yields to the pressure 

 of the nail. Leaves a mark like black-lead 

 when rubbed on paper. Gives off a sul- 

 phurous smell when rubbed. H.2. S.G.4-5 

 to 4-6. 



^ 



Fig. 413. 



Comp. Tersulphide of antimonj^ or SbS^ 

 = antimony 72-88, sulphur 27-12 = 100. 



Melts readily in the flame of a candle, 

 colouring it greenish. 



BB is absorbed by the charcoal, leaving 

 a white slag, and emits a strong sulphurous 

 odour and white fumes. 



Perfectly soluble in muriatic acid. 



Localities. — English. Cornwall : near 

 Padstow and Tintagel, in veins ; Huel Boys, 

 in Endellion, Jig. 413 ; also plumose at Old 

 Trewetha, Port Isaac, and Pendogget in St. 

 Kew. Cumberland ; Robin Hood Mine, and 

 Carrock Fells. — Scotch. Hare Hill, near 

 New Cumnock, Ayrshire. Ben Lawes, Perth- 

 shire. Glendinning, Dumfriesshire. Keith, 

 Banffshire. — Foreign. Felsobanya, Schem- 

 nitzand Kremnitz, in Hungary, in diverging 

 prisms several inches long. Wolfsberg, in 

 the Harz. Po3ing,and Magurka, in Hungary. 

 Borneo. France: Mine of Malbosc (Ar- 

 deche), and in those of Auvergne. Tuscany. 



Brit. Mus., Case 10. 



M P. G. Principal floor, Wall-cases 14 

 (British) ; 20 (Foreign). 



This ore of antimony usually occurs in 

 very long prismatic or acicular crystals, or in 

 a fibrous form. It may be distinguished 

 from a similar ore of manganese by its easy 

 fusibility, crude antimony being obtained 

 from it by simple fusion. From the latter 

 product the pure metal is extracted, and 

 most of the pharmaceutical preparations 

 are prepared. It is the source of most of 

 the antimony of commerce. 



This ore is the Stibium and St/^a*' of the 

 ancients, by whom it was also called vXatTw 

 6p9»X/iLov (from ^\otru-^ broad, o<fda.Xf/,o;^eye), be- 

 cause Of the use to which it was applied in 

 darkening the upper and under sides of the 

 eyelids, for the purpose of increasing the 

 apparent size of the eye. It was supposed 



