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

Table 3

Physical properties of each fluid-rock interaction batch reactions.

Leachate ID	Rock sample ID	Rock sample origin	Rock sample type	Rock sample characteristics	Solvent	Pressure (bar)	Temperature (°C)	Residence time (h)
HTLMix + DI water	HTLMix	UK Herodsfoot	Baked sediments with mineralised veining	Mixture of various samples containing galena, sphalerite, and some chalcopyrite	Deionised water	1	70	670
HTLMix + 0.1 M acetic acid					0.1 M acetic acid			720
HTLMix + 0.1 M acetic acid						200	150	1000
HTLMix + 0.013 M mineral acid					0.01 M HCl + 0.003 M HNO3		100	770
HTLMix + 0.13 M mineral acid					0.1 M HCl + 0.03 M HNO3			770
HTLMix + 0.13 M mineral acid					0.1 M HCl + 0.03 M HNO3		200	530
HTL315 + DI water	HTL315	UK South Caradon	Granite-hosted mineralisation	Mainstage mineralisation associated with granite bodies	Deionised water	1	70	670
HTL315+ 0.1 M acetic acid					0.1 M acetic acid			720
HTL319 + DI water	HTL319	UK Cligga Head	Granite-hosted mineralisation	Tin-tungsten mineralisation associated with granite bodies	Deionised water	1	70	670
HTL319 + 0.1 M acetic acid					0.1 M acetic acid			720
HTL321 + 0.013 M mineral acid	HTL321	RO Cacova Ierii	Skarn	Magnetite deposit enriched in sulphides with visible chalcopyrite	0.01 M HCl + 0.003 M HNO3	200	100	770
HTL324 + 0.013 M mineral acid	HTL324	HU Recsk	Porphyry	Intrusion-related porphyry copper deposit	0.01 M HCl + 0.003 M HNO3	200	100	650