Sanidine

specimen number:
2133435

location:
Taiji, Higashimuoro-gun, Wakayama, Japan

description:
A set of two groupings of blocky white sanidine crystals. Very nice for the species. Both are in great condition. The size provided is in average specimen size for the two pieces.

The coastal town of Taiji, located in Higashimuro District, Wakayama Prefecture, Japan, has a rich cultural history spanning over four centuries, famously recognized as a historical center for traditional Japanese coastal whaling. Geologically, the region is part of the Kii Peninsula and the expansive Kumano area, characterized by complex volcanic and tectonic formations shaped by millions of years of activity and plate convergence. The local volcanic and intrusive rocks provide an ideal setting for high-temperature mineral crystallization. Taiji is notable among mineralogists and collectors as a classic Japanese locality for finding crystals of sanidine, a high-temperature potassium feldspar that typically occurs as distinct phenocrysts within felsic volcanic rocks.

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