MAGNETITE. 



299 



Analysis. .ytTx P iTT'^v. 



Mois^ture 1-28 fs^JJ^^' /\ 



Combined water 12-04 -/ JL»^^^^ -f^ 



Iron sesquioxide 73-60 ' ^' * n<5>' 



Pliosphoric oxide -12 . % '^•^ ^^ C 



Sulphur trioxide '06 i«!3»ftV'r.J 



Insoluble in acid 12*19 - ' " > 



Loss -71 '. ^Ji-^k- 



100-00 > /* * * V*^ 

 iiee " Minerals of New South Wales" p. 96. — """^ 



15. Brown Hcematite. — Dark brown in colour. No magnetic 



particles from 33 grammes of the powder. 



16. Brown Hcematite, Wallerawang. Massive. Gave dark 



red brown powder. May have been "roasted" in a 

 bush fire. No magnetic particles, 



17. Brown Hcematite, Wallerawang. Loose structure. Gave 



yellow brown powder. No magnetic particles. 



18. Loose Brown Hcematite. — Wallerawang. No magnetic 



particles. 



19. Brown Hcematite. — Near Hobart, Tasmania. Dark 



brown colour ; massive. Yielded light brown powder. 

 No magnetic particles. 



20. Pea Iron Ore. — Brown Haematite. Locality unknown. 



No magnetic particles. 



21. Brown Hcematite. — New Guinea. Yielded a trace of 



magnetic particles. 



22. " Ironstone.'' — Brown H-tBmatite. Reigate, Surrey, 



England. No magnetic particles. 



23. Limonite. — Clay Band, Wallerawang, N.S.W. ; of a dark 



red brown colour, looks as if it had been calcined ; 

 powder also red. A trace only of magnetic particles. 



24. Limonite.— Clsiy Band, Wallerawang, N.S.W. No 



magnetic particles. 

 2.5. Brown Hcematite. — Brazil. Pseudomorphous after iron 

 pyrites, auriferous. No magnetic particles. 



26. Ferrous Carbonate. — Jamberoo,N.S.W. See "Minerals 



of New South' Wales," p. 99. 35- 1 grammes of 

 powder yielded no magnetic particles. In another 

 case 64 grammes of powder were also found to be 

 free from magnetic particles. 



27. Iron Carbonate. — A nodule from the coal measures. 



England. No magnetic particles. 



28. Iron Carbonate. — A septarian nodule, No magnetic 



particles. 



