Heulandite
Toi, Izu city, Shizuoka pref., Japan
Field of view: 10 mm. A group of heulandite. The tabular transparent crystals are heulandite. The grayish-brown host at the left is tuff breccia.
Recovered from an open space of a zeolite vein in tholeiitic andesitic-basaltic tuff breccia in an oceanic arc subjected to prophylitization alteration.
Heulandite from this location was described in 1937.
Other localities
- Yanda (Hyaloclastite, Tabular)
- Obora Path (Hyaloclastite, Tabular)