BY W. F. PETTERD, C.M.Z.S. 105 



ore, occurring in irregular patches in the interstices of 

 and disseminated throughout the axinite-bearing rocks. 

 At various mines in the North-East Dundas district this 

 species occurs in more or less quantity. 



182. LiLLiANiTE ( Sulfhohismutite of Lead). 



Found disseminated in association with bismuth sul- 

 phide and other minerals in a quartz matrix at the Osborn 

 Blocks, Mt. Farrell. 



This is an extremely unusual mineral, which was named 

 after the Lillian Mine, near Leadville, Colorado ; it is also 

 recorded as occurring in Sweden. As found in this State 

 it is highly argentiferous, often assaying several hundreds 

 of ounces of silver to the ton of ore. 



183. Lignite (Brovn Goal). 



A semi-formed coal, retaining the texture of the wood 

 from which it was formed. Bischoff ; Breadalbane ; Evan- 

 dale ; Macquarie Harbour ; Launceston ; Young Town ; 

 Pig Island ; and other places. 



At Beaconsfield a peculiar variety is found, which 

 appears to be close to a form that has been named dop- 

 plerite. It is an extremely brittle, intensely black, highly 

 polished, jet-like hydro-carbonaceous substance that has 

 been obtained from the Tasmania and other gold mines 

 at Beaconsfield. It occurs at considerable depth from the 

 surface in the workings of the mines, which are in Silurian 

 strata, and apparently originates from infiltrated water 

 charged with organic matter. A mineral with much the 

 same appearance and nature has been found in the Bischoff 

 Silver-lead Mine : it occurred filling cleavage planes and 

 in vughs in the lode gangue. At the Upper Arthur River, 

 about 3 miles from Bischoff, a similar substance occurs in a 

 hard siliceous rock, again filling cavities. 



184. LiTHOMARGE (Hydrcited SUicate of Aluminium). 



A soft, unctuous, clay-like substance, more or less 

 coloured by iron oxide. In common with similar sub- 

 stances, an unsatisfactory mineral. 



Near Conara ; Piper River : Mt. Claude ; Flinders 

 Island ; Mt. Bischoff. Abundant at Mt. Lyell, often con- 

 taining native copper ; Blue Tier, near Beaconsfield ; often 

 met with on the north-east tinfields, where it apparently 

 results from the decomposition of felspars of the granite. 



