3772 Cristobalite, Vivianite, Zinkhutte Genna, Letmathe, Germany October 3, 2019 Steve Europe Germany
North and Central Americas South Dakota United States ncat JP336, Vivianite, Big Chief Mine (Johnson pegmatite), Glendale, Keystone District, Pennington Co., South Dakota, USA September 23, 2019
Europe Germany 7155 Cristobalite, Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany October 5, 2019
