URL: https://www2.city.kurashiki.okayama.jp/musnat/geology/mineral-rock-sirabekata/mineral44/mineral-koutaku/subetenokoutaku.jpg
URL2: https://www.www2.city.kurashiki.okayama.jp/musnat/geology/mineral-rock-sirabekata/mineral44/mineral-koutaku/mineral-koutaku.html
