Zobrazeno 1 - 7
of 7
pro vyhledávání: '"M R, Thornber"'
Publikováno v:
Economic Geology. 69:93-107
The mineralogical and chemical changes that occur as a result of the supergene alteration of massive pyrrhotite-pentlandite ore at Kambalda are described in detail. In the lowermost Transition Zone, pentlandite is progressively replaced by violarite,
Autor:
M. R. Thornber
Publikováno v:
Journal of Applied Electrochemistry. 13:253-267
Mineralogical data on the oxidative weathering of primary nickel sulphide assemblages are used to calculate the thermodynamic stability fields for pentlandite ((Fe, Ni)9S8), violarite ((Ni, Fe)3S4), millerite (NiS), pyrite (FeS2), pyrrhotite (Fe7S8),
Publikováno v:
Economic Geology. 76:1764-1774
Two gossans developed from separate ore shoots at the Perseverance nickel sulfide deposit are notable for their different textures and compositions. The gossan developed from matrix sulfides in serpentinized ultramafic rock has high Ni and Cu content
Publikováno v:
Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry. 24:1183-1190
Publikováno v:
Nature. 288:250-252
Very large iron ore deposits have formed in many parts of the world, evidently by the supergene alteration of Precambrian banded-iron formation (BIF). Some of these deposits extend to great depths, ranging to 2,400 m at Krivoyrog1, beyond the likely
Autor:
M. R. Thornber
Publikováno v:
SEG Technical Program Expanded Abstracts 1982.
Publikováno v:
South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde. 55(18)
The present study was designed to test the comparative efficacy of cow's milk, a protein, vitamin and mineral mixture (PVM) and soybean textured vegetable protein (SOMOS) as supplements to maize meal porridge in the dietary treatment of children with