Jarosite

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.’

[edit] Related articles

• Agglomeration.
• Aggregate.
• Alluvium.
• Archaeology.
• Calcium carbonate.
• Clay.
• Colluvium.
• English Heritage.
• Historic England.
• Types of soil.