114 THE MINERALS OF TASMANIA. 



coating upon other copper minerals. It is found at 

 several mines at Cascade. At this locality it was 

 met with disseminated and filling small pockets in the 

 granite, often occurring with chalcopyrite and cassiterite; 

 Penguin Copper Mine, with pyrites and gray sulphide of 

 copper; Saxon's Creok, near Frankford, in the clefts of 

 lode quartz, with cupriferous pyrites; in considerable 

 quantity, associated with tile ore and chalcopyrite, Eastern 

 Proprietary Mine, Scamander River; in an old adit, Aus- 

 tralasian Slate Quarry, Back Creek ; Burnie Copper Mine, 

 Blythe, coating chalcopyrite ; Mt. Balfour and Mt. Lyell 

 with other ores of copper. 



198. Melanchroite (Basic Chromate of Lead). 



This form of lead chromate differs mainly from crocoi- 

 site in its darker colour and brick-red streak. 



Judging from the small quantity obtained, it appears to 

 be of rare occurrence. That examined was found on some 

 specimsns of ferro-manganese gossan from the Adelaide 

 Proprietary Mine, at Dundas. It occurred in small amor- 

 phous patches, mixed with larger masses of its congener 

 and flakes of galena. 



Hitherto its only recorded locality has bsen the silver- 

 lead mines of the Ural, Siberia, so that its detection here 

 is of interest to mineralogists. 



199. Melanite (Calcium — Iron Garnet), 



As small dodecahedral crystals in the hatiyne-trachyte 

 and elaeolite-syenite of Port Cygnet. The crystals are 

 occasionally beautifully formed (110), often with splendid 

 zonary structure, as seen in section under the microscope,, 

 and in grains. 



200. Melanterite (Hydrous F errous-s\ilfliate). 

 Doubtless originates from the decomposition of pyrites; 



it is usually found in old mine workings, where there is a. 

 slow percolation of water. 



In adit level, Mt. Bischoff ; Silver Crown Mine, Zeehan ; 

 Blue Tier, near Beaconsfield. At the Tasmania Gold 

 Mine, at Beaconsfield, it occurs in considerable quantity in 

 the older workings. 



201. Melilite (Silicate of Aluminium., Iron, Calcium^ 



Magnesium, and Sodium). 



As microscopic rock-forming crystals in the melilite-basalt 

 of the Shannon Tier, and One Tree Point, near Hobart. 



