page_title: Copperas works
hierarchical_section_title: Copperas works
caption_attribution_description: English: Copperas house, Limb Valley 'Copperas' (ferrous sulphate) was manufactured here from the pyritic Ringinglow Coal seam, mined nearby. The copperas solution was used in the leather tanning industry.
context_page_description: Copperas works were where copperas, Iron(II) sulphate, was produced from pyrite in coal and iron. The history of producing green vitriol, as it was known, goes back hundreds of years in Scotland. In 1814 Steubenville, Ohio had 7 copperas producing manufacturers.
  Pyrite has been used since classical times to manufacture copperas. Iron pyrite was heaped up and allowed to weather. The acidic runoff from the heap was then boiled with iron to produce iron sulphate.
  The vitriolic waters of Fahlun afford annually about 600 quintals of green vitriol, and a small quantity of blue vitriol.
context_section_description: Copperas works were where copperas, Iron(II) sulphate, was produced from pyrite in coal and iron. The history of producing green vitriol, as it was known, goes back hundreds of years in Scotland. In 1814 Steubenville, Ohio had 7 copperas producing manufacturers.
  Pyrite has been used since classical times to manufacture copperas (iron(II) sulphate). Iron pyrite was heaped up and allowed to weather (an example of an early form of heap leaching). The acidic runoff from the heap was then boiled with iron to produce iron sulphate.
  The vitriolic waters of Fahlun (Falun) afford annually about 600 quintals of green vitriol (sulphate of iron), and a small quantity of blue vitriol (sulphate of copper).
caption: Copperas house, Limb Valley.   Copperas (ferrous sulphate) was manufactured here from the pyritic Ringinglow Coal seam, mined nearby. The copperas solution was used in the leather tanning industry.
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