BY W. F. PETTERD, C.M.Z.S. 15 



needles abundantly scattered throughout siderite gangue. 

 Block 291, Ringville. 



Analysis of the Mineral from this Locality. 



Per cent. 

 Fe . = 32-95 



As = 43-20 



S = 21-48 



97-63 



with about 2 per cent, of antimony. 



•28. Asbestos f Fibrous AmphiboleJ. 



This variety of hornblende is also known as amianfhus. 

 It occurs in short silky bunches, associated with actinolite, 

 in an adit driven on one of the abandoned mines at the 

 Heazlewood. It also occurs in small quantity near Lynch- 

 ford, 



29. AsBOLiTE ( Hydrated Oxides of Manganese and Iron^ 



sonietinies with Cobalt). 



This unsatisfactory combination has been found at the 

 Godkin Silver Mine, Whyte River, in bluish-black bunches 

 and irregular masses. Occurs in fair quantity at Dundas; 

 Castle Forbes Bay ; Magnet Range, in lode gossan with 

 other secondary minerals ; Castra, Upper Leven ; Penguin 

 River : Derby, rather abundantly, containing several per 

 cent, of cobalt ; and other places. When not containing 

 cobalt this substance is often termed " wad." 



30. AsPHALTUM ( Bitu7nen or Mineral Pitch). 



Occurs about 4 miles from Chudleigh, on east bank of 

 the Mersey River. It is perfectly black, sectile, and burns 

 with a dense smoke and strong odour. It occurs in a drab- 

 coloured aluminous shale. ' A species of it occurs on the 

 north end of Prime Seal Island " (Gould, Pro. Roy. Soc. 

 Tas., 1871, p. 61) ; also at Cape Barren Island. At various 

 times somewhat large lumps of this substance have been 

 washed ashore at this and other islands in Bass Straits, 

 and also as far west as Table Cape. The pieces are at times 

 several pounds in weight ; their origin has never been 

 discovered. As occurring in the Straits the material is 

 of the purest quality, and would be of commercial import- 

 ance if found in quantity. Tradition says that it has been 

 used for the purpose of covering the bottoms of boats by 

 the half-castes living on the islands. 



