University of Hamburg Mineralogical Museum of the University of Hamburg
Mineral name
 
Hopmannite
Hopmannite holotype sample from xenolith CS-090; M_2025/862
Hölzel-No.
 
-
Type of specimen
 
HT
IMA-No. / Accepted
 
2025-034
Chemical formula
 
Ba2(Ti5Fe)O13
Type locality
 
Germany, Rhineland-Palatinate, Eifel, Ettringer Bellerberg near Mayen, Seekante
Associated minerals
 
-
Collection
 
Naturhistorisches Museum Mainz, Landessammlung für Naturkunde Rheinland-Pfalz
Contact person
 
Dr. Grit Benedix
Catalogue−No. / Site
 
M_2025/862
Nature of 
type specimen

 
Rock sample
References

Hopmannite, IMA 2025-034.
Juroszek, R., Krüger, B., Cametti, G., Marciniak-Maliszewska, B. and Schäfer, C. (2025)
CNMNC Newsletter 87, Mineralogical Magazine, 89
Notes / Further information

The xenolith CS-090 was discovered in 2023 by Christof Schäfer in material from the southern lava flow of the Bellerberg volcano.
Last update 18. March 2026 by A. Matthies Imprint (german)