Premium
Granite Related Indium Mineralisation in Southwest England
Author(s) -
JENS Andersen C.Ø.,
ROSS Stickland J.,
GAVTN Rollinson K.
Publication year - 2014
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.12373_11
Subject(s) - citation , library science , history , computer science
The geology of southwest England is dominated by the voluminous granite batholiths that intruded during the Variscan orogeny. Significant indium is found in sulphidebearing skarns from the northern margin of Dartmoor (the Red-a-Ven mine), the greisen vein systems at Redmoor and Cligga Head, and more than 20 main stage mineral vein systems across the region. The richest occurrences have been identified at Botallack (St Just district); Dolcoath, Wheal Concord and Nangiles (CamborneRedruth-St Day district), Wheal Charlotte (St Agnes) and Perran St George (Perranporth). Total indium concentrations are very variable within and between the individual deposits (fig. 2). Whole-rock concentrations reach 420 ppm (800 ppm in 100% sulphide + oxide). The indium is distributed between sphalerite (<1.2 wt%), chalcopyrite (<2200 ppm), stannite (<6700 ppm) and cassiterite (<1800 ppm). Indium rich vein systems also carry rare, minute grains of roquesite (CuInS2) which are commonly associated with bornite and chalcocite. While the mineralogical distribution of indium Andersen C.Ø. JENS, Stickland J. ROSS and Rollinson K. GAVTN, 2014. Granite Related Indium Mineralisation in Southwest England. Acta Geologica Sinica (English Edition), 88(supp. 2): 435-436.