University of Hamburg Mineralogical Museum of the University of Hamburg
Mineral name
 
Jasmundite
Height: 8 cm, width 9 cm
Hölzel-No.
 
9.AJ.500
Type of specimen
 
Teil des HT
IMA-No. / Accepted
 
1981-047
Chemical formula
 
Ca11(SiO4)4O2S
Type locality
 
Germany, Rhineland-Palatinate, Eifel, Ettringer Bellerberg near Mayen
Associated minerals
 
Mayenite, brownmillerite, calcite, wollastonite, gehlenite, larnite, diopside, grossular, pyrrhotite, spinel, ettringite, portlandite, hydrocalumite, vaterite, tobermorite, thaumasite
Collection
 
GeoMuseum - Universität zu Köln
Contact person
 
Dr. Rolf Hollerbach
Catalogue−No. / Site
 
M5026/86 / Stahlschrank Systematiksammlung
Nature of 
type specimen

 
Close intergrowth of jasmundite (greenish to brownish, partly pseudoisometric grains) with brownmillerite (dark reddish brown) and further paragenetic minerals (grain size of jasmundite up to 5 mm)
References

Jasmundite, Ca22(SiO4)8O4S2, a new Mineral
Hentschel, G., Dent Glasser, L. S. and Lee, C. K.
N. Jb. Miner. Mh., 1983, 337-342
Notes / Further information

Sample B3, original material from the dissertation of G. Hentschel (University of Cologne, 1964).
Last update 27. April 2022 by A. Matthies Imprint (german)