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colourless quartz, amethyst, and black quartz, often covered 

 with a film of brilliantly green flashes of the radio-active 

 mineral torbernite; in other places there are small quartz- 

 lined cavities completely filled with a brilliant canary-yellow 

 powder, which is another radio-active uranium mineral. Some 

 of the quartz crystals have radiating fibres of the radio-active 

 mineral, uranophane, passing through them. 



Walking along the Ridge one can notice growths of quartz 

 sticking out from the ground up to 3 ft. in height, and broken 

 pieces lying around. Their shape at once suggests the stalac- 

 tites in caves. On closer inspection they are found to have 

 a hollow rectangular cavity passing up the centre, the length 

 of the growth, and that the quartz has a radiating structure 

 away from this hollow, suggesting it has grown outward from 

 a nucleus which has since disappeared. This type of quartz was 

 traced over an area of at least four square miles. 



In places the loose rubble and soil can be scraped away, 

 disclosing a cavity, the top of which has been worn off by 

 erosion, with these growths pointing centrewards from all 

 around. In other places are fissures in the country rock lined 

 with this type of quartz formation. 



In the solid rock, some feet from the surface and where 

 atmospheric weathering has not penetrated, there are found 

 masses of quartz with these long rectangular cavities filled 

 with a powdery substance like clay. Probably at greater 

 depth the original nucleus would be found in an unaltered 

 state. 



Beautifully coloured crystals tinted with various shades 

 of red, brown, pink, and yellow may be collected at various 

 places along the Ridge ; also bunched aggregates and tabular 

 masses. 



Continuing in an easterly direction, pieces of quartz 

 occur with a warty formation on the upper-surface and 

 irregular sharp-edged rectangular protrusions on the lower, 

 as if it had been formed in a mould produced by the crack- 

 ing of rocks. 



In some of the caves there occur small stalactites of 

 silica hanging from the tops and projecting from the sides, 

 and streaky formations on some of the rock faces, as if the 

 silica-bearing waters deposited some of their load while slowly 

 trickling along. 



The Ridge takes a sudden turn to the south about three 

 miles from its westerly end, and continues for about a mile, 

 where it terminates in Mount Gee, or Crystal Mount, which 

 is of considerable interest. Outcrops and cliffs, of jasper 

 (up to 50 ft. high) and ironstone and quartz, with great 



