LOWER TRANSITION ROCKS. 89 



Close by is a poor band of haematite quartzite showing much 

 Mutigi haematite- contortion. A similar band occurs 3! miles 

 quartzite. further south-east, and forms a low rocky ridge 



close to the village of Mutigi (Mootyghee). The rock, which is grey 

 and white, or purplish and white, or buff in colour, is extraordinarily 

 crumpled on a small scale, so much so as to make a determination of its 

 thickness a very doubtful matter. It is frequently jaspideous in tex- 

 ture, as is often the case in the beds poornn iron. 



Quartz reefs — Are pretty numerous in the southern and south- 



^ eastern flanks of the Jaikal mass, and occur both 



Quartz reefs. . J ' 



in the chloritic schists and the trap flow to the 



east of them. These reefs are doubtless the source of the gold 

 which is washed in the streams draining this tract. A description 

 of the gold washing, as here practised, will be found in the chapter 

 on economic geology. The reefs, though short, are of good-look- 

 ing blue quartz and deserve deep prospecting. This is the only 

 part of Bellary district in which gold has been actually found at 

 present. 



The streams which are washed for gold are : (1) the upper part of 



Gold washing in Kon- the Chiggateri nullah, at a place called Chengulu ; 

 ganahosur nullah. ( 2 ) a sma u streara north-west by west of Chigga- 



teri village ; (3) a st ream known as the Bevihalli nullah, really the 

 head-waters of the Maithur nullah ; and (4) the stream which flows on 

 the north-east slope of Jajkal gudda, and is known as the Kongana- 

 hosur 1 nullah. Of these the last is much the richest and the first the 

 second best. Bevihalli nullah is exceedingly poor in gold. 



Much of the valley traversed by the Konganahosur nullah is masked 

 by a local laterite, really a cemented talus of the haematite debris 

 washed down from Jajkal gudda. The gold obtained from the 

 nullah from a point about a mile above the village is coarse and has 

 been but little rolled, so has been derived probably from some reef 

 lying in the valley. 



'Konganahosur is not shown in sheet 59. It lies on the bank of the nullah about 

 2% miles north-north- east of Jajkal gudda peak. 



( 8 9 ) 



