#goethite
Wed, 21 Oct 2020 12:31:04
Fluorite, goethite, quartz, Clara Mine, Germany. Photo by Uwe Haubenreisser
Wed, 17 Nov 2021 18:30:52
Sun, 05 Feb 2017 18:24:18
Sun, 05 Feb 2017 12:48:20
Tue, 12 Mar 2019 08:20:41
Fluorite, goethite, quartz, Clara Mine, Germany. Photo by Uwe Haubenreisser