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Silver Valley Mine (William and Mary Worth Mine; incl. Ashburton Mine), Sevenstones, Calstock, Callington District, Cornwall, England, UK


List of minerals arranged by Dana 8th Edition classification
Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Silver1.1.1.2Ag
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Arsenopyrite2.12.4.1FeAsS
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
AX2
Cassiterite4.4.1.5SnO2
Group 9 - NORMAL HALIDES
AX
Chlorargyrite9.1.4.1AgCl
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals
Chamosite
var: Daphnite
-(Fe,Mg)5Al(Si,Al)4O10(OH)8
'Chlorite Group'-
Wolframite-(Fe2+)WO4 to (Mn2+)WO4


12 entries listed. 10 valid minerals.

References

Richardson, P.H.G. (1992): Mines of Dartmoor and the Tamar Valley after 1913. Northern Mine Research Society (Sheffield), 160 pp.

Hamilton Jenkin, A. K. (1969): Mines and Miners of Cornwall, Vol. 15: Calstock, Callington and Launceston. Federation of Old Cornwall Societies (Penzance), 68 pp.

Dines, H.G. (1994): The Metalliferous Mining Region of South-West England, Vol. 2, reprint, HMSO Publications (London), pp. 633-634, xxii.

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