Acknowledgement
The Centre for Atomic Molecular Physics and Quantum Optics and Institute of Geological and Mining Research are thanked for their support (logistics and allowances) to carry out field work. Hirosaki University supported the project in terms of Equipment and analysis through Japan Society for the Promotion of Science (JSPS), Grants in Aid for Scientific Research (KAKENHI) Grant Number 26305021. Abdus Salam International Centre for Theoretical Physics (ICTP) is acknowledged for its support (OEA-AC-71). This work was partially supported by the Institute of Geological and Mining Research and Centre for Atomic Molecular Physics and Quantum Optics (CEPAMOQ) (logistics and allowances) to carry out field work. Hirosaki University supported partially the project in terms of Equipment and analysis through JSPS KAKENHI Grant Number 26305021 and ICTP supported partially the project through the OEA-AC-71 project at CEPAMOQ.
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