University of Hamburg Mineralogical Museum of the University of Hamburg
Mineral name
 
Astrophyllite
Astrophyllit (brown, elongated) with biotit, aegirine, feldspar (10 x 8,5 x 1,5 cm)
Hölzel-No.
 
9.DU.500
Type of specimen
 
T
IMA-No. / Accepted
 
prä-IMA / 1854
Chemical formula
 
K2Na(Fe2+,Mn)7Ti2Si8O26(OH)4
Type locality
 
Norway, Langesund fjord, Helgeroa, Insel Låven
Associated minerals
 
Biotite, aegirine, orthoclase, galena, chalkopyrite, "Fahlerz" (tennantite/tetrahedrite)?
Collection
 
Geowissenschaftliche Sammlungen - TU Bergakademie Freiberg
Contact person
 
Andreas Massanek
Catalogue−No. / Site
 
26246 / W 4,7
Nature of 
type specimen

 
Mineral specimen
References

Scheerer, T. (1854)
Berg- und hüttenmännische Zeitung, 13, 389-392
Notes / Further information

According to Weisbach, the sample comes from the bequest of Th. Scheerers.
Last update 27. April 2022 by A. Matthies Imprint (german)