Last edited 03 Sep 2021


Geoarchaeology, Using Earth Sciences to Understand the Archaeological Record, published by Historic England in 2015, defines jarosite as a: ‘potassium iron sulphate mineral composed of KFe3(SO4)2.(OH)6, and deposited where iron sulphides have oxidised in the absence of calcium carbonate; typically found in sediments associated with salt water.’

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