opened in 1838, Lanivet Consols, amalgamated with Tregollan Mine in 1839 as Tretoil Consolidated Mines, lies one and a half miles southeast of Lanivet. It includes Wheal Messar and the former sett of Blackheath or East Tretoil Mine.
Recorded output:
Tretoil: 1838-39, 1858, 1874, 1875 & 1882 - 11,755 tons of 7.25% copper ore and 30 tons of black tin.
Messar: 1841-55, & 1859, 2,078 tons of 6.5% copper ore
Tretoil & Messar, 1859 & 1860, 100 tons of 5.75% copper ore' 19 tons of black tin and 156 tons of zinc ore.
Tregullan: 1842-44, 1,163 tons of 6.25% copper ore and 7,910 tons of iron ore; 1852-54, 12 tons of lead ore.
Lanivet Consolsa; 1844-4811845 tons of 2.5% copper ore; 1865-67, 468 tons of iron ore % 30 tons of pyrite.
The reference to danalite at Tretoil Mine is a Kingsbury (1961) citation. Given the doubts about the provenance of other Kingsbury specimens (Ryback et al. 1998, 2001), further confirmation is required.
References
The Metalliferous Mining Region of South-West England, H G Dines 1956
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