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Laumontite

Nakayashiki

Nakanokura, Minobu city, Minami-Koma county, Yamanashi pref., Japan

Laumontite

Field of view: 50 mm. Groups of laumontite. The radial groups of opaque white prisms are laumontite. The gray basement is hyaloclastite.

Recovered from a laumontite vein in basaltic-andesitic hyaloclastite subjected to Prehnite-Pumpellyite facies metamorphism.

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