Science – Society – Technology
From: Criteria and geological setting for the generic geothermal underground research laboratory, GEOLAB
Name | Hydraulic properties | Secondary minerals in fractures |
---|---|---|
Grimsel Test Site, Switzerland | MHC: 10−12–10−11 m s−1 | Albite, epidote, muscovite, mica, chlorite, calcite |
FT: up to 10−10–10−5 m2 s−1 | CM: <10 % mainly illite | |
Äspö Hard Rock Laboratory, Sweden | MHC: >10−12 m s−1 | Chlorite, epidote, zoisite, albite, calcite, fluorite, sericite, and zeolites, hematite |
FT: up to >10−4 m2 s−1 | CM: illite, mixed-layer clay | |
Overall pumping rate: about 20 L s−1 | ||
Onkalo, Finland | FT (depth <85 m): up to >10−6 m2 s−1 | Fe-sulphides, pyrrhotite, pyrite, and calcite |
FT (depth >85 m): up to >10−7 m2 s−1 | CM: illite, smectite-group, kaolinite | |
AECL URL, Lac du Bonnet, Canada | MHC: <10−11 m s−1 | Chlorite, iron oxides, carbonates, epidote |
FT: up to >10−3 m2 s−1 | CM: present (type N/A) | |
Mizunami URL, Japan | HC (fresh Toki granite): >10−7 m s−1 | Quartz, plagioclase, K-feldspar and biotite, iron oxides, chlorite, calcite |
HC (altered Toki granite): >10−8 m s−1 | CM: kaolinite, montmorillomite | |
Josef URL, Czech Republic | HC (overall): 2–5·10−9 m s−1 | Ore (gold,…), quartz, calcite, barite |
CM: n/a | ||
Mine Reiche Zeche, Freiberg, Germany | MHC: <10−12 m s−1 | Ore: sulphides, quartz, fluorite, sulphates, barite, feldspars, pyrite CM: n/a |
FT: up to 10−8–10−4 m2 s−1 | ||
Lindau test site, Black Forest, Germany | HC (fractured ore dike): 5·10−6–10−4 m s−1 | Quartz, fluorite, barite, ore |
HC (fractured granite): 5·10−10–10−8 m s−1 | CM: kaolinite | |
FT: up to >10−6–5·10−4 m2 s−1 |