Cobaltite: Difference between revisions
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JeffEvarts (talk | contribs) (Created page with "{{ Ore | freq=common | hardness=5.5 | density=6.33 | chemf=PbS | calctemp=750 | calcprod=PbO | m1=Co | m2=As | m3= }} ==Character== Pure Cobaltite (CoAsS) would be 16...") |
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Revision as of 23:26, 1 January 2021
Frequency | common |
---|---|
Hardness | 5.5 |
Density | 6.33 |
Chemical Formula | PbS |
Core Elements | Co, As |
Thermal Decomposition | PbS
750°C PbO |
Character
Pure Cobaltite (CoAsS) would be 165.854g/mol, thus 35.5% by mass cobalt, 45% by mass arsenic, and 20% by mass sulfur.
Roasting
Oxidative roasting below 550°C did not show any crystal structural change in cobaltite but heating to 650°C, yielded Co-As-oxide whose composition varied. Direct oxidation of cobaltite to cobalt oxides with traces of arsenic was observed by roasting at 750°C or above.[1]
See Also
References
- ↑ Wang, Guoxin (1993) "Oxidation of Cobaltite"
University of Nevada, Reno; Master's Thesis