Census of Victorian Minerals. 263 



Limonite occurs all over the colony, and may be found 

 almost wherever decomposition has taken place, more 

 especially in the areas of basic eruptive rocks and in 

 most outcrops of mineral lodes. It is therefore useless to 

 record occurrences unless they have some special minera- 

 logical or economic interest. 

 LiTHOMARGE. — (Indurated kaolinite). 



Of shining porcelain-like appearance, coloured red in part by 

 iron sesquioxide, Maryborough district (W.). 

 Magnesite. — -Magnesium carbonate. 



Earthy and impure nodules, 14 miles from Euroa (W.). 



Vesicular, Will-Will-Rook : with calcite in dolerite, partly 

 coated with hyalite, Ballarat (B.M.). 

 Magnetite. — Iron protoxide and iron sesquioxide. 



Large, dull brown, polished grains, Myamyn ; Angular and 

 partly rounded fragments, Surrey Hills (W.). 



In perfect octahedrons, mixed with other non-metallic sands, 

 Mitchell River (CI.). 



Analysis of Mitchell River magnetite ; sample obtained by 

 picking up with a weak magnet (CL). 



Ferric oxide - - - 7 9 '44 



Ferrous oxide . - - 20 '25 

 Magnesia - - - - trace 



Manganite. — Hydrous sesquioxide of Manganese. 

 Laminar, Superb Coy's. Mine, Linton (B.M.). 

 Marcasite. — Orthorhombic Iron disulphide. 



Nodular with fossil wood, Nelson mine, Sebastopol, Ballarat 

 (B. M.). 

 Mirabilite. — Hydrous sodium sulphate. 



Efflorescent, earthy, in parts epsomite, Lai Lai (B.M.). 

 Molybdenite. — Molybdenum disulphide. 



Plates in quartz, Gurrum, near Euroa; Lancefield (W.). 

 Molybdite. — Molybdenum trioxide. 



An incrustation on molybdenite from a quartz vein in 

 granite, Gurrum, near Euroa (W.). 

 Monazite. — Phosphate of cerium, lanthanum, didymium and 

 mostly containing also thorium. 



