Laboratory Leaching Tests to Investigate Mobilisation and Recovery of Metals from Geothermal Reservoirs

Table 1

Major geological and mineral properties of the samples.

Sample ID	Sample locality	Geological setting	Summary of bulk mineralogy (as determined by XRD)
HTLMix	Herodsfoot, SW England	Baked sediments with partial quartz vein	87% quartz, 5% muscovite, 2% dolomite, 5% galena, minor albite, chlorite, pyrite, and sphalerite
HTL315	South Caradon, SW England	Mainstage mineralisation associated with granite bodies	70% quartz, 7% schorl, 5% chlorite, 2% calcite, 10% pyrite, 5% arseonpyrite, and minor greigite and biotite
HTL319	Cligga Head, SW England	Tin-tungsten mineralisation associated with granite bodies	88% quartz, 2% muscovite, 3% cassiterite, 3% columbite, and 4% ferberite
HTL321	Masca-Cocovaleni, Romania	Mineralised skarn country rock	22% dolomite, 49% pyrite, 27% magnetite, minor quartz, calcite, and barite
HTL322	Rudabánya, NE Hungary	Carbonate hosted lead-zinc mineralisation	8% quartz, 2% calcite, 68% magnesite, 6% cerussite, 1% sphalerite, 1% columbite, 11% barite, 2% magnetite, and minor dolomite
HTL324	Recsk, NE Hungary	Porphyry sulphide polymetallic ore	74% quartz, 5% calcite, 9% pyrite, 11% magnetite, minor albite, dolomite, and sphalerite