﻿part 3] STANNIFEROUS DEPOSITS OE KINTA DISTRICT. 



183 



In an article by him in the ' Geological Magazine ' for July 

 1914 (pp. 309-11), the object of which was 'to present fm*ther 

 evidence on the relative age of the clays and the granite,' a 

 remarkably good photograph is shown of the junction of the 

 schists and granite at the French Tekka Mine, and there it is stated 

 that these clays possibly escaped metamorphism, although they are 

 in contact with an enormous mass of granite intrusive into them. 

 This question will be further dealt with on p. 18(3 ; but the point to 

 notice here is the similarity between the section in this photograph 

 of French Tekka and the section given of Tronoh Mines, and the 

 totally different interpretations assigned to them. 



M. Joseph Roux-Brahic describes 1 the tin-ore of French Tekka 

 as being derived from the rock in situ on the property and in the 

 immediate neighbourhood, and this has later been verified by me. 



The presence in the clays at Ulu Piah Mine of big blocks of 

 white to colourless fluorspar and of large lumps of scheelite, practi- 

 cally unknown in most of the mines of the district, and the fact 

 that scheelite, fluorspar, and tin-ore have been found in situ in 

 veins in the limestone on this property, seem to place the question 

 of the origin of, at least, this part of these clays beyond dispute. 



Despite the fact that at Gopeng Mines and at Ulu Gopeng 

 tin-ore has been, and is still being, worked in situ in many places, 

 and that granitic intrusions are very common in these mines, 

 Mr. Scrivenor definitely states that the bulk of the ore has been 

 transported here by ice from an ancient tin-field situated some- 

 where to the west of the present position of the Malay Peninsula. 



Gopeng is famous, among other things, for the remarkable 

 purity and extent of its kaolin -veins, 2 and the association of these 

 veins and other granitic intrusions with the richest deposits of tin- 

 ore is quite clear and, in places, strikingly obvious. Such a case, 

 occurring at the Kinta Mines, Gopeng, is described in the Kinta 

 Memoir by Mr. Scrivenor as follows : 



' Only a few yards away from this vein [kaolin- vein] a very rich mass of tin- 

 ore was found that constitutes an excellent example of a secondary supply of 

 tin-ore from the Mesozoic granite.' 3 



This would imply the secondary enrichment by granite, stated to 

 be of Cretaceous age, of a tin-ore deposit of Permo-Carboniferous 

 age ! 



Overlooking the western part of the Kinta Valley, between 

 Menglembu and Lahat, are the Menglembu Lode Mine and the 

 Chendai Lode Mines. The hard undecomposed granite worked here 

 is traversed by innumerable small stringers, rich in tin-ore. 4 For 

 the purposes of this paper it is sufficient to point out that, in 

 this locality, overlooking the Kinta Valley, is granite which, when 



1 ' Etude du District Stannifere de Tekka ' 1913, p. 6. 



2 W. E.. Jones, ' Clays of Economic Importance in the Federated Malay 

 States ' Kuala Lumpur, 1915, p. 33. 



3 ' The Geology & Mining Industry of the Kinta District ' 1913, p. 57. 



4 [W. R. Jones, ' Mineralization in Malaya ' Mining Magazine, Oct. & Dec. 

 1915, pp. 6 & 7.] 



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