Asia Japan 5491 Cristobalite, Arimura, Sakurajima, Kagoshima City, Kagoshima Prefecture, Japan October 2, 2019
Europe Germany ncat JP1783 Cristobalite, Mendig, Eifel, Rhineland-Palatinate, Germany October 11, 2019
Europe Germany 7155 Cristobalite, Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany October 5, 2019
