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QUARTZ coating citrine

Click on the image to see a larger version copyright statement	Description: Group of quartz, 3[SiO2],crystals, coloured yellow by a coating of amber-coloured ?citrine, and finished with layer of drusy quartz.
	Locality: Charcas, San Luis Potosi, Mexico
	Photo donor: Image is by courtesy of Stuart Wilensky www.wilenskyminerals.com