University of Hamburg Mineralogical Museum of the University of Hamburg
Mineral name
 
Karlleuite
Fragment of xenolite GB1, in which karlleuite was detected; points 1-6 indicate the location of the new mineral within the holotype sample.
Hölzel-No.
 
-
Type of specimen
 
HT
IMA-No. / Accepted
 
2023-102
Chemical formula
 
Ca2MnO4
Type locality
 
Germany, Rhineland-Palatinate, Eifel, Ettringer Bellerberg near Mayen, Caspar quarry
Associated minerals
 
Reinhardbraunsite, larnite, minerals of fluorellestadite-fluorapatite series, chlormayenite, gehlenite, srebrodolskite, brownmillerite, sharyginite, perovskite, lakargiite, hydrocalumite, calcite, ettringite, periclase, hydrated Ca silicates and aluminosilicates
Collection
 
Naturhistorisches Museum Mainz, Landessammlung für Naturkunde Rheinland-Pfalz
Contact person
 
Dr. Grit Benedix/b>
Catalogue−No. / Site
 
NHMMZ M 2023/2-LS
Nature of 
type specimen

 
Mineral specimen
References

Karlleuite Ca2MnO4 – a first mineral with the Ruddlesden-Popper type structure from Bellerberg volcano, Germany.
Juroszek, Rafał, Krüger, Biljana, Cametti, Georgia, Ternes, Bernd, Blaβ, Günter (2024)
Mineralogy and Petrology, 569-580; doi:10.1007/s00710-024-00869-y  
Notes / Further information

The xenolith specimen with karlleuite was collected by Bernd Ternes and Günter Blaꞵ in the area of the open quarry.
Last update 18. March 2026 by A. Matthies Imprint (german)