TrekGEO > Mineral Trail > Koshinetsu region > Nagano pref. > Mesolite

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Lake Sayama

Maeyama, Ueda city, Nagano pref., Japan


Field of view: 50 mm. Mesolite filling a vesicule. The radial group of white prisms is mesolite. The pale brown part at the bottom of mesolite is epistilbite. The black host is andesite.

Recovered from a vesicule of an andesitic pillow lava of Hosoonotaki Volcanics Member.

Mesolite from this location was described in 1896.

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