Michael Cortie

Jun 10, 2024 | chemistry-europe.onlinelibrary.wiley.com | Michael Cortie |Annette Dowd |Matthew Arnold |Supitcha Supansomboon

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Mar 7, 2023 | tolerance.ca | Michael Cortie

When it comes to gold, how pure is pure? And how does anybody know? As recent revelations about the Perth Mint have shown, gold buyers and sellers take purity very seriously. Questions have been raised over impurities found in some A$9 billion worth of gold sold to the Shanghai Gold Exchange. While the gold reportedly met the industry standard for 99.99% (or “4N”) purity, it failed to meet extra agreed specifications for the level of silver. Read complete article

Mar 6, 2023 | theconversation.com | Michael Cortie

When it comes to gold, how pure is pure? And how does anybody know? As recent revelations about the Perth Mint have shown, gold buyers and sellers take purity very seriously. Questions have been raised over impurities found in some A$9 billion worth of gold sold to the Shanghai Gold Exchange. While the gold reportedly met the industry standard for 99.99% (or “4N”) purity, it failed to meet extra agreed specifications for the level of silver.

Mar 6, 2023 | thetimes.com.au | Michael Cortie

Tue Mar 7 Written by Michael Cortie, Professor emeritus, University of Technology Sydney When it comes to gold, how pure is pure? And how does anybody know? As recent revelations[1] about the Perth Mint have shown, gold buyers and sellers take purity very seriously. Questions have been raised over impurities found in some A$9 billion worth of gold sold to the Shanghai Gold Exchange.