Gold occurs in the free native form in rocks, veins and in alluvial deposits. This element has been used as a medication for ancient times: its first use was as a powder metal by the Chinese. In 1890 Koch discovered that gold cyanide killed tubercle bacilli more efficiently than cyanide alone. Their inorganic and coordination compounds are unique and displayed exceptional properties like the ability to form metal-metal bonds in clusters. Recycling gold is a way of conserving resources because of which it is necessary environmentally respectful methods for gold recovery.
More info about the International Year of the Periodic Table (IYPT) in crystals project:
This project (#IYPTCrystals) is part of the International Year of the Periodic Table celebration (#IYPT2019), read more about the project here. You can follow us on social media using #IYPTCrystals and learn more about the wonders of crystals by following the CCDC on Twitter @ccdc_cambridge on Facebook ccdc.cambridge, on Instagram ccdc_cambridge or on YouTube CCDCCambridge.
If you want to find out more about some of the terms and concepts we have a Frequently Asked Questions Page.