BAGRATIONITE. 

 Protoxide of iron . .21-3 



Protoxide of manganese . 1-8 

 Magnesia . . . .2*2 

 Ahimina . . . .0-3 

 Loss by ignition . . .0-9 



100-5 



BB fuses easily on the surface to a black 

 magnetic enamel. With borax gives a 

 transparent amethystine-coloured bead, 

 ■which becomes bluish-green in the re- 

 ducing flame. 



Dissolves slowly in boiling muriatic acid. 



Babingtonite resembles certain dark va- 

 rieties of Augite. It occurs in very distinct 

 crystals at Arendal in Norway, and in large 

 irregular laminated crystals, imbedded in 

 white Quartz in one of the Shetlauds. 



Name. After Dr. Babington. 



Brit. Mus., Case 35. 



Bagrationite, Kohscharow. A variety of 

 AUanite, having the same angles as Uralor- 

 thite. 



Batekine, Beudant. The name proposed 

 by Damour for varieties of Columbite from 

 Limoges, which give a streak like those 

 from Bavaria. S.G. 5*6 to bl. 



Fig. 40. 



Anah/sis by Damour : 



Coiumbic acid . . . 78*44 



Protoxide of iron , . 14-96 



Protoxide of manganese . 6'52 



99-92 



Name from Baiern, Bavaria. 



Baikalite, a dingy-green coloured crys- 

 talline variety of Sahlite (Augite) found in 

 Granite at the mouth of the Sljumanka river, 

 ■which falls into lake Baikal in Siberia: 

 hence the name Baikalite. 



Baikerite, a chocolate-brown coloured 

 mineral wax. It has the hardness of 

 ordinarv wax, but becomes soft with the 

 warmth of the hand; at 52° C. (125-6° F.) 

 it melts to an oily liquid, and at a higher 

 temperature distils over, leaving a little 

 carbonaceous residue. Soluble in hot ether, 

 naphtha, and turpentine. 



Analysis : 



Wax-like substance insoluble 



in alcohol 7-02 



Wax-like substance soluble in do. 60 18 



BAMLITE. 



Thick fluid resin 

 Earthy impurities 



32-41 

 0-39 



100-00 



Locality. The vicinity of Lake Baikal in 

 Siberia. 



Brit. Mus., Case 34. 



Balats Ruby, Balas Ruby: Balass 

 Ruby, Kinvan. The name given to the 

 rose-red varieties of Spinel. The Balas Ruby 

 is held in much less estimation than either 

 Oriental or Spinel Ruby, and is often con- 

 founded with burnt Topaz. Nevertheless it is 

 sometimes employed in jewelry, and fetches 

 a high price ; a tine stone of 24 to 30 carats, 

 being worth from 8/. to 16Z. In an oriental 

 work on jewels, entitled Khawas-ul-hejar, 

 the stone is treated of under the name of 

 Balaksh (Balakshan being synonomous with 

 Badakshan). Hence the European name — 

 Balas Ruby, or Ruby of Badakshan. 



The Rubinus Balassius or Pallacius, was 

 one of the gems included by the ancients 

 under the general name Carbuncle : pro- 

 bably it is the Carhunculus amethystizontes of 

 Pliny. 



Ballesterosite, a variety of Pyrites 

 from Gallicia, containing traces of zinc and 

 tin. 



Baltimorite, Thomsoji. A mineral of a 

 greyish -green colour, composed of longitu- 

 dinal flbres adhering to each other. It is 

 opaque, but translucent at very thin edges. 

 Lustre silky. Hardness very little less than 

 Calc-spai-, or nearly 3. 



Analysis : 



Silica ..... 40-95 

 Maifuesia .... 34-70 

 Oxide of iron . . . 10-05 

 Alumina .... 1-50 

 Water 12-60 



99 80 



BB infusible, but turns brown : with soda 

 melts to an opaque, Avith borax to a trans- 

 parent bead. 



This mineral bears considerable resem- 

 blance to Asbestos, but the latter contains 

 more silica and much lime, which is absent 

 in Baltimorite. 



The name was given by Dr. Thomson, 

 who first examined it, from. its being found 

 at Baltimore, U.S. It also occurs dark 

 green and fibrous at Killin in Perthshire. 



Brit. Mus., Case 25. 



Bamlite, Erdmann. A mineral with the 

 structure and appeai-ance of som^e kinds of 

 Kyanite. Occurs in oblique and generallv 

 strongly striated, four-sided prisms: also 

 massive and radiated plumose. Colour grey- 

 D 2 



