BIJAWAR— BUNDELKHAND. 29 



somewhat similar boulder-beds have been found in the Purana 

 group elsewhere, and these rocks are now regarded as much 

 older than the Talchirs. Named from the Blaini river (30° 55' ; 

 77° 8') by H. B. Medlicott (Mem., Geol. Sun., Ind., Ill, pt. 

 2, 17, 30, 1864). See also T. H. Holland (Rec, Geol. Surv., 

 Ind., XXXVII, 129, 1908). 



Blanfordite.— Named after W. T. Blanford by L. L. Fermor 

 (Tram. Min. and Geol. Inst, of India, I, 78, 1906). A 

 highly pleochroic, manganiferous pyroxene, found in the man- 

 ganese-ore deposits of the Central Provinces, Central India and 

 Bombay (cf. Mem., Geol. Surv., Ind., XXXVII, 125, 1909). 



Boileauganj quartzites. — Distinguished by H. B. Medlicott (Mem., 

 Geol. Surv., Ind., Ill, pt. 2, 34, 1864) as the probable equivalent 

 at Boileauganj (31° 6' ; 77° 10') near Simla of the Krol sand- 

 stones. They occur apparently above the carbonaceous shales 

 (R. D. Oldham, Rec., Geol. Surv., Ind., XX, 147, 1887), and are 

 included by R. D. Oldham in the Infra-Krol series (Rec., Geol. 

 Surv., Ind"., XXI, 135, 1888). 



Bombite. — Name given by De Bournon (Observations sur quelques- 

 uns des Mineraux, etc., 30, 1823) to material found near Bombay 

 and brought to Europe by M. Leschenault de la Tour. It 

 occurs in amorphous or rounded masses and has no fixed chemical 

 composition. Probably an occurrence of tachylyte. 



Blldavada Stage. — The lowest of three divisions of the Upper 

 Gondwanas south of the Kistna river, named by R. B. Foote 

 'Mem.. Geol. Surv., Ind., XVI, 4, 70, 1880) from the village 

 of Budavada (15° 51' ; 80° 12'). This stage corresponds with 

 the Golapilli stage of the Ellore area, and includes numerous 

 marine shells which do not appear to have been determined. 



Bundair.— See Bhander series. 



Bundelkhand gneiss.— Name instituted by F. R. Mallet (unpublished 

 report) from the state of that name and adopted in the Manual 

 of Indian Geology (1st Ed., 1879, 10) for a gneiss possessing 

 the characters of coarse pink granite of constant composition 

 and almost free from accessory minerals. Foliation is never 

 well developed. Pegmatite veins, and quartz reefs are common. 

 It has, in fact, all the characters of an intrusive granite, 

 but covers an extremely wide area. Originally it was looked 

 upon as the oldest gneiss in India. This view is no longer 



