778 THE TIN-DEPOSITS OF NEW ENGLAND, N.S.W., I., 



of the workings. The lodes or impregnated bands run in 

 a N.N.E. direction, and have been opened by a series of 

 open cuts, and cross trendies. The southernmost of these 

 (Fig. 10, A) intersects a greisen-vein underlying slightly to the east. 

 At B, a few small stringers are exposed. At C, a lode of silicified 

 granite, about 4 feet wide and containing mispickel, is intersected 

 by the open cut. At D, a shaft has been sunk on a lode similar 

 to that at A. The lode bears north and south, and underlies at 

 70° to the east. At E, a trench 50 yards in length, 10 feet in 

 depth, and 4 feet in width, has cross-cut several lodes. These 

 appear to be impregnated bands in the granite. Part of the 

 granite is soft and decomposed, with hard patches of silicified 

 granite throughout. 



From F to G there is an open cut, about 8 feet in width. This 

 intersects bands of altered granite of a peculiar appearance. 

 The alteration has taken place in horizontal layers, which are 

 separated by soft decomposed granite. These layers dip to the 

 south-west at about 15°. This type of impregnation is a common 

 feature of some Cornish mines. 



From G to I the open cut is 14 feet deep at the south end, and 

 runs to zero at the north end. Bands of altered granite, con- 

 taining cassiterite, have been removed. From this locality I 

 obtained a fine specimen of apatite intergrown with plates of 

 wolframite. Mispickel is also present, and its oxidised products 

 have stained the surrounding granites a characteristic green 

 colour. 



K to L represents another open cut, of a similar nature. M is 

 a prospecting shaft, now in course of development. This is down 

 to a depth of 80 feet, and a drive has been put in at this level 

 for a distance of 27 feet to the west. At a distance of 10 feet, a 

 band of highly altered granite, constituting a lode, was met. 

 This was driven through for 17 feet, where the normal granite 

 was again appearing. The lode-material consists of quartz, mica, 

 arseno-pyrite, and chlorite; and the central portion, for about two 

 feet in width, carried crystallised cassiterite. The lode-material 

 passes rapidly over into the "Acid Granite." Further to the north. 



