Andesine
Mount Tokko
Maeyama, Ueda city, Nagano pref., Japan
This locality is closed to collecting.
IMA approved name
Albite var. andesine
Length of the crystal: 3 mm. Dispatched twins of andesine. The tabular white crystals are andesine.
Recovered as dispatched crystals from phenocrysts of dacite tuff.
The dacite tuffa is a member Hosoonotaki Volcanics Member.
These crystals had been used as a charm. The first andesine from Japan was reported from this location in 1895.