71 



165, in case 126, is tinstone tliat has replaced some other Case 64. 

 mineral — probably calcite — while still preserving the original 

 crystalline form of the latter (^pseudomorphous replacement) . 



4193, in case 126, is a large specimen of crystallised tinstone 

 from Isew England. 



"^Vhile IS'ew England is the principal tin-field, tin ores are 

 found in many other localities. 



In the West, tin has been found at Eremeran, in the Cobar TVestern 

 district. (8586, stream tin; 7967, New Mount Hope, lode ^-oc^lities. 

 tin.) 



At Euriowie, in the Barrier Range, tin mines were at one time 

 opened in a mass of pegmatite consisting largely of coarsely- 

 crystallised quartz and mica. The ore is associated with tour- 

 maline, and it is frequently very difficult to distinguish between 

 them without applying tests (see page 70). 1608, in case 126, 

 shows tinstone and tourmaline together, while 1605, in the same 

 case, shows the tourmaline well. 7970, Poolamacca, contains 

 white mica and quartz ; tinstone is freely shown. 



Xumerous samples of stream -tin have been found in the Soutlism 

 creeks draining the granite area of the south-eastern portion ^o^ahties. 

 of the State. 



Stream tin believed to come from the following districts is 

 exhibited : — Tumut, Tumbarumba, Dora Dora, Monaro, Carrier, 

 Meadow Elat, Boro, Tarago, Grenfell, Bega, Tantawangle, 

 Bombala, PuUitop, Toolong. 



9716, ironstone, Monaro : this assays 40 per cent, of tin. The 

 concentrates contain zircon. 



4111, Tumbarumba : stream tin associated with pebbles of 

 andalusite, large specimens of which will be found in case 100. 

 Andalusite has no commercial value (see page 153). 



6705, said to come from Wyalong. 



10123, 10125, Buddigower, near "Wy along: lode-tin ore, with 

 quartz and arsenical pyrites, in granite. Picked pieces of the 



G 



