What about crushing and doing a sulphide flotation, and then analyse the concentrates and tails?
regards
Ralph Bottrill
Mineral Resources Tasmania
03 6233 8359
-----Original Message-----
From: Support and use of X-ray diffraction instrumentation [mailto:[log in to unmask]] On Behalf Of [log in to unmask]
Sent: Saturday, 15 August 2009 07:30
To: [log in to unmask]
Subject: Re: Analysis
Just a suggestion here, not based on experience, is that depending on the form of the material you might consider X-ray Fluorescence for this. For lead at least, the intensity of the Mg line is said to be sensitive to the bonding state of the atom since it represents a transition involving a valence electron whereas the Ma and Mb arising from inner core transitions do not. People have used this to differentiate lead oxides from lead carbonates so there might be some potential to differentiate the sulfide.
John Twilley
-----Original Message-----
>From: "Moradi, Saeid" <[log in to unmask]>
>Sent: Aug 14, 2009 5:00 AM
>To: [log in to unmask]
>Subject: Analysis
>
>Dear X-ray Crystallographer,
>I have a mixed lead and zinc ore (sulphide and oxidised lead and zinc minerals), I would be very grateful for any advice you might be able to give me on how to know the percentage of the zinc (or lead) in the oxidised part and the percentage of the zinc (or lead) in the sulphide part of this ore. I am looking for a practical routine way.
>
>Best regards,
>Saeid Moradi
>Royal School of Mines
>Imperial College London
>London SW7 2BP- UK
>
>
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