Help with attached optical views.

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PGM-Au-Ag

PGM-Au-Ag

Member
Joined
Jun 1, 2011
Messages
17
Please give an opinion on the attached Microscopic pics of a metal Chloride.
 

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The chloride in the previous post is a sample left over from an AR digestion of a metal compound that I believe has PGMs. It was also been placed in a 20% solution of regent grade HNO3 and water and boiled. A stannous chloride test has been confusing. It has shown colors for Pt then, after making another batch of stannous, it does not show color. Some of the salts will absorb UV light. Could the pics be Iridium salts?
 

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