VOOZH about

URL: https://www.mindat.org/min-55455.html

⇱ Oberwolfachite: Mineral information, data and localities.

👁 Image
Now Featuring: The Bruce Carter Collection at Heritage Auctions, Live May 16th
Log InRegister
AboutSupport UsPhotosDiscussionsSearchLearnMore

Oberwolfachite

A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.

About OberwolfachiteHide

This section is currently hidden. Click the show button to view.
Formula:
SrFe3+3(AsO4)(SO4)(OH)6
Colour:
Yellow to brown
Lustre:
Adamantine
Specific Gravity:
3.874 (Calculated)
Crystal System:
Trigonal
Name:
Named after the type locality - the famous Clara mine that is in Oberwolfach (Black Forest, Germany).
The Sr analogue of beudantite. The Fe analogue of kemmlitzite. Unique combination of elements (at the upload time).

A Ba analogue is known: Unnamed (Fe-analogue of Weilerite and Ba-analogue of Oberwolfachite).


Unique IdentifiersHide

This section is currently hidden. Click the show button to view.
Mindat ID:
55455
Long-form identifier:
mindat:1:1:55455:2

IMA Classification of OberwolfachiteHide

This section is currently hidden. Click the show button to view.
Approved
Approval year:
2021
First published:
2021

Classification of OberwolfachiteHide

This section is currently hidden. Click the show button to view.
8.BL.

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
L : With medium-sized and large cations, (OH, etc.):RO4 = 3:1

Mineral SymbolsHide

This section is currently hidden. Click the show button to view.
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
ObwIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of OberwolfachiteHide

This section is currently hidden. Click the show button to view.
Adamantine
Colour:
Yellow to brown
Streak:
Yellow
Cleavage:
Distinct/Good
on {0001}
Density:
3.874 g/cm3 (Calculated)

Chemistry of OberwolfachiteHide

This section is currently hidden. Click the show button to view.
Mindat Formula:
SrFe3+3(AsO4)(SO4)(OH)6
Element Weights:
Element% weight
O37.825 %
Fe28.291 %
Sr14.796 %
As12.652 %
S5.415 %
H1.021 %

Calculated from ideal end-member formula.

Crystallography of OberwolfachiteHide

This section is currently hidden. Click the show button to view.
Crystal System:
Trigonal
Class (H-M):
3m(32/m) - Hexagonal Scalenohedral
Space Group:
R3m
Setting:
R3m
Cell Parameters:
a = 7.3270(3) Å, c = 17.0931(9) Å
Ratio:
a:c = 1 : 2.333
Unit Cell V:
794.7 ų
Morphology:
Platy crystals up to 1 mm across; outer zones of mixed (oberwolfachite–beudantite) crystals up to 3 mm across
Comment:
The above unit-cell parameters are those of the holotype sample; cotype data: a = 7.298(2) Å, c = 16.908(3) Å.

X-Ray Powder DiffractionHide

This section is currently hidden. Click the show button to view.
Powder Diffraction Data:
d-spacingIntensity
5.95 Å(56)
3.664 Å(37)
3.117 Å(16)
3.082 Å(100)
2.548 Å(15)
2.280 Å(22)
1.983 Å(26)
1.832 Å(19)
Comments:
PXRD data for the holotype material

Type Occurrence of OberwolfachiteHide

This section is currently hidden. Click the show button to view.
General Appearance of Type Material:
(1) platy crystals, up to 1 mm across, (2) thick, outer zones of mixed oberwolfachite–beudantite crystals, up to 3 mm across.
Place of Conservation of Type Material:
Collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskiy Prospekt 18-2, Moscow 119071, Russia, registration number 5674/1.
Associated Minerals at Type Locality:

Synonyms of OberwolfachiteHide

This section is currently hidden. Click the show button to view.

Other Language Names for OberwolfachiteHide

This section is currently hidden. Click the show button to view.

Relationship of Oberwolfachite to other SpeciesHide

This section is currently hidden. Click the show button to view.
Other Members of Beudantite Group:
BeudantitePbFe3+3(AsO4)(SO4)(OH)6Trig. 3m(32/m) : R3m
ClouditeBaFe3+3(PO4)(SO4)(OH)6Trig. 3m(32/m) : R3m
CorkitePbFe3+3(PO4)(SO4)(OH)6Trig. 3m(32/m) : R3m
GallobeudantitePbGa3(AsO4)(SO4)(OH)6Trig. 3m : R3m
HidalgoitePbAl3(AsO4)(SO4)(OH)6Trig. 3m : R3m
HinsdalitePbAl3(PO4)(SO4)(OH)6Trig. 3m(32/m) : R3m
KemmlitziteSrAl3(AsO4)(SO4)(OH)6Trig. 3m(32/m) : R3m
SlottaiteSrFe3+3(PO4)(SO4)(OH)6Trig. 3m(32/m) : R3m
SvanbergiteSrAl3(PO4)(SO4)(OH)6Trig. 3m(32/m) : R3m
'UM2011-07-POSO:AlBaH'BaAl3(PO4)(SO4)(OH)6
'Unnamed (Fe-analogue of Weilerite and Ba-analogue of Oberwolfachite)'BaFe3(AsO4)(SO4)(OH)6
WeileriteBaAl3(AsO4)(SO4)(OH)6Hex.
WoodhouseiteCaAl3(PO4)(SO4)(OH)6Trig. 3m(32/m) : R3m

Common AssociatesHide

This section is currently hidden. Click the show button to view.
Associated Minerals Based on Photo Data:
4 photos of Oberwolfachite associated with QuartzSiO2
4 photos of Oberwolfachite associated with GoethiteFe3+O(OH)
2 photos of Oberwolfachite associated with ChenevixiteCu2Fe3+2(AsO4)2(OH)4

Related Minerals - Strunz-mindat GroupingHide

This section is currently hidden. Click the show button to view.
8.BL.KiryuiteNaMnAl(PO4)F3Mon. 2/m : P21/m
8.BL.MetaheimitePbCu2(AsO4)(OH)3Mon. 2/m : P21/b
8.BL.Graulichite-(La)LaFe3+3(AsO4)2(OH)6Trig. 3m(32/m) : R3m
8.BL.ClouditeBaFe3+3(PO4)(SO4)(OH)6Trig. 3m(32/m) : R3m
8.BL.ArsenobenauiteSrFe3+3(AsO4)(AsO3OH)(OH)6Trig. 3m(32/m) : R3m
8.BL.05GallobeudantitePbGa3(AsO4)(SO4)(OH)6Trig. 3m : R3m
8.BL.05SlottaiteSrFe3+3(PO4)(SO4)(OH)6Trig. 3m(32/m) : R3m
8.BL.05CorkitePbFe3+3(PO4)(SO4)(OH)6Trig. 3m(32/m) : R3m
8.BL.05HidalgoitePbAl3(AsO4)(SO4)(OH)6Trig. 3m : R3m
8.BL.05HinsdalitePbAl3(PO4)(SO4)(OH)6Trig. 3m(32/m) : R3m
8.BL.05'UM2011-07-POSO:AlBaH'BaAl3(PO4)(SO4)(OH)6
8.BL.05KemmlitziteSrAl3(AsO4)(SO4)(OH)6Trig. 3m(32/m) : R3m
8.BL.05BeudantitePbFe3+3(AsO4)(SO4)(OH)6Trig. 3m(32/m) : R3m
8.BL.05WeileriteBaAl3(AsO4)(SO4)(OH)6Hex.
8.BL.05WoodhouseiteCaAl3(PO4)(SO4)(OH)6Trig. 3m(32/m) : R3m
8.BL.05SvanbergiteSrAl3(PO4)(SO4)(OH)6Trig. 3m(32/m) : R3m
8.BL.10SegnititePbFe3+3AsO4(AsO3OH)(OH)6Trig. 3m(32/m) : R3m
8.BL.10ArsenogoyaziteSrAl3(AsO4)(AsO3OH)(OH)6Trig. 3m(32/m) : R3m
8.BL.10ArsenogorceixiteBaAl3(AsO4)(AsO3OH)(OH)6Trig. 3m(32/m) : R3m
8.BL.10DussertiteBaFe3+3(AsO4)(AsO3OH)(OH)6Trig. 3m(32/m) : R3m
8.BL.10GalloplumbogummitePb(Ga,Al,Ge)3(PO4)2(OH)6Trig. 3m : R3m
8.BL.10StibiosegnititePb(Fe3+2.5Sb5+0.5)(AsO4)2(OH)6Trig. 3m(32/m) : R3m
8.BL.10 va'Viséite'
8.BL.10ArsenocrandalliteCaAl3(AsO4)(AsO3OH)(OH)6Trig. 3m(32/m)
8.BL.10BenauiteSrFe3+3(PO4)(PO3OH)(OH)6Trig. 3m(32/m) : R3m
8.BL.10PhilipsbornitePbAl3(AsO4)(AsO3OH)(OH)6Trig. 3m(32/m) : R3m
8.BL.10CrandalliteCaAl3(PO4)(PO3OH)(OH)6Trig. 3m(32/m) : R3m
8.BL.10SpringcreekiteBaV3+3(PO4)2(OH,H2O)6Trig. 3m(32/m) : R3m
8.BL.10EylettersiteTh0.75Al3(PO4)2(OH)6Trig. 3m(32/m) : R3m
8.BL.10KintoreitePbFe3(PO4)(PO3OH)(OH)6Trig. 3m(32/m) : R3m
8.BL.10PlumbogummitePbAl3(PO4)(PO3OH)(OH)6Trig. 3m(32/m) : R3m
8.BL.10GorceixiteBaAl3(PO4)(PO3OH)(OH)6Mon. m : Bm
8.BL.10GoyaziteSrAl3(PO4)(PO3OH)(OH)6Trig. 3m(32/m) : R3m
8.BL.13Florencite-(Ce)CeAl3(PO4)2(OH)6Trig. 3m(32/m) : R3m
8.BL.13Florencite-(La)LaAl3(PO4)2(OH)6Trig. 3m(32/m) : R3m
8.BL.13Florencite-(Nd)NdAl3(PO4)2(OH)6Trig. 3m(32/m) : R3m
8.BL.13ZaïriteBiFe3+3(PO4)2(OH)6Trig. 3m(32/m) : R3m
8.BL.13Arsenoflorencite-(La)LaAl3(AsO4)2(OH)6Trig. 3m(32/m) : R3m
8.BL.13'Arsenoflorencite-(Nd)'NdAl3(AsO4)2(OH)6Trig.
8.BL.13'Unnamed (As-analogue of Zaïrite)'(Bi,Pb)Fe3+3(AsO4)2(OH)6
8.BL.13Arsenoflorencite-(Ce)CeAl3(AsO4)2(OH)6Trig. 3m(32/m) : R3m
8.BL.13Graulichite-(Ce)CeFe3+3(AsO4)2(OH)6Trig. 3m(32/m) : R3m
8.BL.13'Arsenowaylandite'BiAl3(AsO4)2(OH)6Trig.
8.BL.13WaylanditeBiAl3(PO4)2(OH)6Trig. 3m(32/m) : R3m
8.BL.13Florencite-(Sm)SmAl3(PO4)2(OH)6Trig. 3m(32/m) : R3m
8.BL.15ViitaniemiiteNa(Ca,Mn2+)Al(PO4)(F,OH)3Mon. 2/m : P21/m
8.BL.25PattersonitePbFe3+3(PO4)2(OH)5 · H2OTric. 1 : P1

Other InformationHide

This section is currently hidden. Click the show button to view.
IR Spectrum:
spectra available
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for OberwolfachiteHide

This section is currently hidden. Click the show button to view.
mindat.org URL:
https://www.mindat.org/min-55455.html
Please feel free to link to this page.

References for OberwolfachiteHide

This section is currently hidden. Click the show button to view.
Reference List:

Localities for OberwolfachiteHide

This section is currently hidden. Click the show button to view.

Showing 3 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the 👁 Image
symbol to view information about a locality. The 👁 Image
symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

This section is currently hidden. Click the show button to view.
👁 Image
- This locality has map coordinates listed. 👁 Image
- This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. 👁 Image
- Good crystals or important locality for species. 👁 Image
- World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
France (TL)
  • Auvergne-Rhône-Alpes
    • Rhône
      • Villefranche-sur-Saône
        • Lantignié
Chukanov et al. (2021)
Germany (TL)
  • Baden-Württemberg
    • Freiburg Region
      • Ortenaukreis
        • Oberwolfach
Miyawaki et al. (2021) +1 other reference
Greece
  • Attica
    • East Attica
      • Lavreotiki
        • Agios Konstantinos (Kamariza)
          • Kamariza mines (Kamareza mines)
van Kalmthout et al. (2022) +1 other reference
Quick NavTopAbout OberwolfachiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Chemistry Crystallography X-Ray Powder DiffractionType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: April 4, 2026 07:19:05 Page updated: March 7, 2026 17:13:20
Go to top of page