URL：https://upload.wikimedia.org/wikipedia/commons/thumb/c/cd/Ozokerite_natural_Paraffin_wax_Soldier_Summit_Minnind_District_-_Colton_-_Wasatch_County_Utah_1963.jpg/440px-Ozokerite_natural_Paraffin_wax_Soldier_Summit_Minnind_District_-_Colton_-_Wasatch_County_Utah_1963.jpg
掲載元：https://ja.wikipedia.org/wiki/オゾケライト
