Important Update News
The RRUFF Project is being updated to improve its interface and content. The beta version of the update is accessible to the public at RRUFF.net. New data is only being added to the beta site. Please note that it is in development, and some components are not functional. Existing RRUFF.info links will resolve to the new site after RRUFF.net is officially released.
We are grateful to NASA for the funding of this effort.
![]() |
![]() |
Name: Ferrofettelite RRUFF ID: R100124 Ideal Chemistry: [Ag6As2S7][Ag10FeAs2S8] Locality: Nieder-Berbach, Odenwald, Germany Source: William W. Pinch [view label] Owner: RRUFF Description: Dark reddish thin platy crystals associated with proustite and xanthoconite. Analysis of this sample is reported in Bindi et al (2012) and Bindi and Downs (2022). This is the type specimen. Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
Mineral Group: [ Fettelite (3) ] |
CHEMISTRY | ||||||||
---|---|---|---|---|---|---|---|---|
![]() |
|
RAMAN SPECTRUM | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
|
BROAD SCAN WITH SPECTRAL ARTIFACTS | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
|
POWDER DIFFRACTION | |||||||
---|---|---|---|---|---|---|---|
RRUFF ID: | R100124.9 | ||||||
Sample Description: | Single crystal, powder profile is calculated | ||||||
Cell Refinement Output: |
a: 26.000(2)Å b: 15.067(2)Å c: 15.512(1)Å alpha: 90° beta: 90.29(1)° gamma: 90° Volume: 6076.6(8)Å3 Crystal System: monoclinic |
||||||
|
|
REFERENCES for Ferrofettelite | |
---|---|
American Mineralogist Crystal Structure Database Record: [view record] |
|
Bindi L, Downs R T, Spry P G, Pinch W W, Menchetti S (2012) A chemical and structural re-examination of fettelite samples from the type locality, Odenwald, southwest Germany, Mineralogical Magazine, 76, 551-566 [view file] |
|
Bindi L, Downs R T (2022) Ferrofettelite, [Ag6As2S7][Ag10FeAs2S8], a new sulfosalt from the Glasberg quarry, Odenwald, Germany, Mineralogical Magazine, 86, 340-345 [view file] |
|
Miyawaki R, Hatert F, Pasero M, Mills S J (2022) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) - Newsletter 65, European Journal of Mineralogy, 34, 143-148 [view file] |
|
|