62 HAYDEN : AURIFEROUS LOCALITIES IN NORTH COIMBATQREV 



eventually striking the reef, it would in my opinion be more 

 advantageous to sink from the surface along the reef; it would* 

 then be possible to ascertain whether or no the reef is merely, as 

 suggested, a small isolated patch caught up in an intrusive mass o£ 

 pyroxenite. 



3. Hadabanatta, 



About two miles north of " Porsedyke " mine, and near the 

 village of Hadabanatta ( Adapullnutta ) a lode is 



Old workings. . 



seen cropping out on the northerly slope of the 

 end of the same ridge. On this lode are very extensive old work- 

 ings (see plates 8 and 9) which were discovered by Mr. R. Morris. 

 When first found, these workings were completely filled up by broken 

 rock and debris, but have been cleared out by Mr. Morris. According 

 to local tradition they were worked during the times of Tippu 

 Sultcln and Haidar Ali, but on the approach of the British, they are 

 said to have been filled in. 



As will be seen from the plan and photograph, these old workings 

 were fairly extensivei though their greatest 



The reef. . 



depth is not more than about twenty feet below 

 the surface. The reef, which varies in thickness from i'o/' to about 

 8 feet, strikes nearly east-west and has a dip of about 33 to the 

 south and south-south-east. A good deal of the reef has been exposed 

 by clearing out the old workings and a certain amount of new ground 

 has also been opened up by Mr. Morris. 



The chief minerals found in the reef, in addition to quartz, are 

 copper pyrites, Somite, malachite, iron pyrites, haematite, limonite, 

 and various forms of amorphous silica. Near the outcrop one of the 

 commonest of these minerals is malachite, which has been derived 

 from the decomposition of the other ores of copper. This reef is 

 in fact chiefly valuable as a copper lode and has already been 

 examined by Messrs. John Taylor and Sons. 

 ( 62 ) 



