Churchite crystals from the Leonie Mine, Upper Palatinate, Germany, Gerd Tremmel collection – small cabinet specimen as unique piece
This small cabinet specimen with Churchite crystals from the Leonie Mine, Upper Palatinate, Germany, originates from the Gerd Tremmel collection and represents a typical occurrence of this rare phosphate mineral. The Churchite crystals appear as fine, mostly white to slightly cream colored aggregates irregularly distributed on the darker, iron rich matrix.
The crystals are small but clearly recognizable, forming fine crystalline, partly radial coatings. The matrix shows a strong brown to rusty weathered surface with sharp fracture areas, creating a pronounced contrast to the lighter Churchite crystals. The crystals form an irregularly structured, matte surface and give the specimen its characteristic natural appearance.
Geology & Origin
The Leonie Mine in the Upper Palatinate is a classic locality for secondary phosphate minerals in Germany. The mineralization formed in hydrothermally influenced rocks where weathering and oxidation processes produced a wide range of secondary phosphates. Churchite is a rare yttrium phosphate typically occurring in the oxidation zone of such deposits, often as fine crystalline coatings on the matrix.