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Identifying Dickite with a Field Spectrometer

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Identifying Dickite with a Field Spectrometer

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Dickite is a phyllosilicate clay mineral with the chemical formula Al2(Si2O5) (OH)4. It is part of the kaolinite group along with halloysite and nacrite and can be found in gold bearing high-sulfidation epithermal systems. It can be an indirect indicator of gold, lead, zinc and silver and can be useful in alteration mapping to vector to ore deposits. A characteristic alteration sequence and zonation for high-sulfidation epithermal deposits can consist of advanced argillic, argillic and propylitic alteration outward from the silicic core.

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