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



band of the quartzose rock characteristic of Class i. There is 

 typically about 1 to 2 inches central quartz, rather less than an 

 inch of quartzose, and from 8-12 inches of greisen in these veins. 

 They occur only, as far as I know, on the western slope of 

 Elsmore Hill, and the largest vein is about 35 yards in length 

 and 10 inches in width. 



Class V. — Quartz-Veins. 



Two kinds of veins may be included in this class — (a) Smoky 

 Quartz- Veins; (b) Veins of Translucent Quartz. 



(a) The veins of smoky quartz are always small, varying from a 

 mere thread up to 2 or 3 inches in width. The quartz is fine- 

 grained and granular, and contains small cUvities filled with 

 earthy iron-oxides. The veins pass gradually from almost pure 

 quartz into the country-rock. They have been observed only in 

 two localities — near the Leviathan Mine, and about 2 miles east 

 of the Bischoff Lode. In both cases the countr3^-rock is the Acid 

 Granite. 



(6) Veins of this kind are cliaracteristic of the Tingha area, 

 more especially. The reefs are never of large size, the largest 

 averaging less than 2 feet in width. For the most part the 

 so-called lodes are composed of more or less parallel bands of 

 quartz, which vary from a small fraction of an inch up to 5 or 6 

 inches in width. They appear to be no more uniform or con- 

 tinuous than the quartz-quartzose reefs at Elsmore. 



A good example of this type of vein is the Butchart Lode. 

 This lode occurs in the "Acid Granite," near its junction to both 

 slate and Tingha Granite. At its south-western extremity, 

 which bears N.50°E., it has been trenched for about 150 feet in 

 length. The lode lies on the slope of a hill facing south-west, 

 and the depth of the trench varies from zero to about 25 feet. 

 There is little to be seen in this part of the workings, as the ore 

 has been quite removed. The lode was opened again a score or 

 two of yards to the north-east. Here again, the ore was taken 

 out of an open cut, which bears N.74:°E., extends for over 100 

 feet in length, and is from 3 to 4 feet wide. The so-called lode 



