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boulders of the same materials scattered around its flanks, 

 are features of this part of the Ridge. 



Numbers of crystal-lined cavities and caves are found in 

 the quartz and ironstone outcrops. At the very top of 

 Mount Gee is a small cave lined with what at first sight 

 appears to be mud-covered quartz crystals. On breaking 

 them, however, one is astonished at an unexpected snow- 

 whiteness and purple in banded layers. An outcrop of 

 similar quartz is found on the opposite side of Mount Gee ; 

 so, presumably, this formation passes through the top of the 

 mountain. Banded quartz of various designs and structures 

 are to be found here. Some are simply alternating layers 

 of coloured quartz, generally pinks, whites, and yellows ; 

 others have iron layers alternating with the quartz ; while 

 again, some have the quartz and iron indiscriminately mixed. 

 Much of the quartz has a delicate fibrous structure, at right 

 angles to the layers in some cases, and radiating from centres 

 in others, giving it a satin-like appearance. This fibrous 

 structure is due to actual quartz material and not inclusions, 

 as evidenced by breaking it, when the quartz splinters into 

 long needle-like fragments. 



Carnelian is often met with in bands passing around and 

 through masses of quartz which have a well-defined crystal 

 formation. On breaking, the common white quartz splits up 

 into the individual crystals, and the carnelian may be 

 obtained in small irregular fragments. 



Quartz pseudomorphs after fluorspar occur here, as well 

 as pseudomorphs after other minerals. 



A common feature noticed was the alternate depositions 

 of silica, both in individual crystals and large deposits, as 

 indicated by a cap-in-cap formation. In places the complete 

 upper part of a quartz crystal could be removed and yet 

 have a regularly developed crystal underneath, with the six 

 pyramid faces and their proper interfacial angles. 



It was possible to do this on account of a drusy set . of 

 faces being covered with more silica not in optical continuity 

 with the older quartz. Such an effect may occur several times 

 in a single crystal. In some examples collected a layer of 

 clay, oxide of iron as a thin film, or a layer of haematite up 

 to J in. thick, separated layers of silica which could be so 

 removed. Quartz covered with haematite, which in turn was 

 covered with more quartz with a different structure from the 

 lower silica, was commonly met with. 



This alternating feature gives rise to some beautiful 

 examples of coloured quartz crystals. In some examples col- 

 lected, four different colours, in layers conformable with the 

 exterior of the crystal, occurred. The common colours met 



