0634 Dachiardite-Ca, Hokiya-dake, Toyosaka, Matsushiro, Nagano City, Nagano Prefecture, Japan June 6, 2024 Steve Asia Japan Labelled: Mt Hokidoke, Nagono Volcano, Japan. Colourless prismatic crystals. Width of view 6mm. Stack of 35 images. Click on the image below for a higher resolution version.