Fig. 2
From: Methane genesis within olivine-hosted fluid inclusions in dolomitic marble of the Hida Belt, Japan
Photomicrographs of investigated dolomitic marble. a Cross-polarized light (XPL) image of dolomitic marble. b XPL image of partially serpentinized olivine crystals in dolomitic marble. Serpentinization forms serpentine (lizardite) and magnetite. c, d Plane-polarized light (PPL) image of olivine crystals rich in fluid inclusions. e PPL image of olivine-hosted fluid inclusions with secondary nature. f PPL image of olivine-hosted primary fluid inclusion that contains calcite and dolomite. Mineral abbreviations follow Warr (2021)