Weilerite
A valid IMA mineral species
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Formula:
BaAl3(AsO4)(SO4)(OH)6
Colour:
White
Crystal System:
Hexagonal
Member of:
Name:
After the type locality, the Michael Mine at Weiler, near Lahr, Black Forest, Germany (but from where it may not in fact exist).
Originally considered a synonym of arsenogorceixite, because the exact sulphate content was unknown. It was redefined in 1987.
An iron(III) analogue is known: Unnamed (Fe-analogue of Weilerite and Ba-analogue of Oberwolfachite).
An iron(III) analogue is known: Unnamed (Fe-analogue of Weilerite and Ba-analogue of Oberwolfachite).
Unique Identifiers
Mindat ID:
4258
Long-form identifier:
mindat:1:1:4258:7
GUID
(UUID V4):
(UUID V4):
cce8c34f-5570-4e32-95dc-cb5a4525f778
IMA Classification of Weilerite
Approved
IMA status notes:
Redefined by the IMA
IMA Formula:
BaAl3(SO4)(AsO4)(OH)6
Approval year:
1987
First published:
1961
Classification of Weilerite
8.BL.05
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
L : With medium-sized and large cations, (OH, etc.):RO4 = 3:1
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
L : With medium-sized and large cations, (OH, etc.):RO4 = 3:1
22.3.14
22 : Phosphates, Arsenates or Vanadates with other Anions
3 : Phosphates, arsenates or vanadates with sulphates
22 : Phosphates, Arsenates or Vanadates with other Anions
3 : Phosphates, arsenates or vanadates with sulphates
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Wlr | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Weilerite
Colour:
White
Streak:
White
Optical Data of Weilerite
Type:
Uniaxial
Chemistry of Weilerite
Mindat Formula:
BaAl3(AsO4)(SO4)(OH)6
Crystallography of Weilerite
Crystal System:
Hexagonal
Cell Parameters:
a = 7.05 Å, c = 15.16 Å
Ratio:
a:c = 1 : 2.15
Unit Cell V:
652.54 ų (Calculated from Unit Cell)
Z:
3
Comment:
Point group n.d.; space group n.d.
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
5.80 Å | (8) |
2.54 Å | (7) |
3.01 Å | (10) |
2.27 Å | (5) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 7: Great Oxidation Event | <2.4 |
47a : [Near-surface hydration of prior minerals] | |
47b : [Sulfates and sulfites] | |
47d : [Arsenates, antimonates, selenates, bismuthinates] |
Type Occurrence of Weilerite
General Appearance of Type Material:
Earthy crust; idiomorphic crystals less than 10 microns.
Associated Minerals at Type Locality:
Reference:
Walenta K, Wimmenauer W (1961) Der Mineralbestand des Michaelganges im Weiler bei Lahr (Schwarzwald). Jahreshefte des Geologischen Landesamtes in Baden-Württemberg 4, 7-37
Relationship of Weilerite to other Species
Member of:
Other Members of this group:
Beudantite | PbFe3(AsO4)(SO4)(OH)6 | Trig. 3m (3 2/m) : R3m |
Cloudite | BaFe3+3(PO4)(SO4)(OH)6 | Trig. 3m (3 2/m) : R3m |
Corkite | PbFe3(PO4)(SO4)(OH)6 | Trig. 3m (3 2/m) : R3m |
Gallobeudantite | PbGa3(AsO4)(SO4)(OH)6 | Trig. 3m : R3m |
Hidalgoite | PbAl3(AsO4)(SO4)(OH)6 | Trig. 3m : R3m |
Hinsdalite | PbAl3(PO4)(SO4)(OH)6 | Trig. 3m (3 2/m) : R3m |
Kemmlitzite | SrAl3(AsO4)(SO4)(OH)6 | Trig. 3m (3 2/m) : R3m |
Oberwolfachite | SrFe3+3(AsO4)(SO4)(OH)6 | Trig. 3m (3 2/m) : R3m |
Svanbergite | SrAl3(PO4)(SO4)(OH)6 | Trig. 3m (3 2/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 | |
Woodhouseite | CaAl3(PO4)(SO4)(OH)6 | Trig. 3m (3 2/m) : R3m |
Common Associates
Related Minerals - Strunz-mindat Grouping
8.BL. | Graulichite-(La) | LaFe3+3(AsO4)2(OH)6 |
8.BL. | Oberwolfachite | SrFe3+3(AsO4)(SO4)(OH)6 |
8.BL. | Kiryuite | NaMnAl(PO4)F3 |
8.BL. | Cloudite | BaFe3+3(PO4)(SO4)(OH)6 |
8.BL.05 | Beudantite | PbFe3(AsO4)(SO4)(OH)6 |
8.BL.05 | Corkite | PbFe3(PO4)(SO4)(OH)6 |
8.BL.05 | Hidalgoite | PbAl3(AsO4)(SO4)(OH)6 |
8.BL.05 | Hinsdalite | PbAl3(PO4)(SO4)(OH)6 |
8.BL.05 | Kemmlitzite | SrAl3(AsO4)(SO4)(OH)6 |
8.BL.05 | Svanbergite | SrAl3(PO4)(SO4)(OH)6 |
8.BL.05 | Woodhouseite | CaAl3(PO4)(SO4)(OH)6 |
8.BL.05 | Gallobeudantite | PbGa3(AsO4)(SO4)(OH)6 |
8.BL.05 | UM2011-07-POSO:AlBaH | BaAl3(PO4)(SO4)(OH)6 |
8.BL.10 | Arsenogoyazite | SrAl3(AsO4)(AsO3OH)(OH)6 |
8.BL.10 | Arsenogorceixite | BaAl3(AsO4)(AsO3OH)(OH)6 |
8.BL.10 | Arsenocrandallite | CaAl3(AsO4)(AsO3OH)(OH)6 |
8.BL.10 | Benauite | SrFe3+3(PO4)(PO3OH)(OH)6 |
8.BL.10 | Crandallite | CaAl3(PO4)(PO3OH)(OH)6 |
8.BL.10 | Dussertite | BaFe3+3(AsO4)(AsO3OH)(OH)6 |
8.BL.10 | Eylettersite | Th0.75Al3(PO4)2(OH)6 |
8.BL.10 | Gorceixite | BaAl3(PO4)(PO3OH)(OH)6 |
8.BL.10 | Goyazite | SrAl3(PO4)(PO3OH)(OH)6 |
8.BL.10 | Kintoreite | PbFe3(PO4)(PO3OH)(OH)6 |
8.BL.10 | Philipsbornite | PbAl3(AsO4)(AsO3OH)(OH)6 |
8.BL.10 | Plumbogummite | PbAl3(PO4)(PO3OH)(OH)6 |
8.BL.10 | Segnitite | PbFe3+3AsO4(AsO3OH)(OH)6 |
8.BL.10 va | Viséite | |
8.BL.10 | Springcreekite | BaV3+3(PO4)2(OH,H2O)6 |
8.BL.10 | Galloplumbogummite | Pb(Ga,Al,Ge)3(PO4)2(OH)6 |
8.BL.13 | Arsenoflorencite-(La) | LaAl3(AsO4)2(OH)6 |
8.BL.13 | Arsenoflorencite-(Nd) | NdAl3(AsO4)2(OH)6 |
8.BL.13 | Arsenoflorencite-(Ce) | CeAl3(AsO4)2(OH)6 |
8.BL.13 | Florencite-(Ce) | CeAl3(PO4)2(OH)6 |
8.BL.13 | Florencite-(La) | LaAl3(PO4)2(OH)6 |
8.BL.13 | Florencite-(Nd) | NdAl3(PO4)2(OH)6 |
8.BL.13 | Waylandite | BiAl3(PO4)2(OH)6 |
8.BL.13 | Zaïrite | BiFe3+3(PO4)2(OH)6 |
8.BL.13 | Arsenowaylandite | BiAl3(AsO4)2(OH)6 |
8.BL.13 | Graulichite-(Ce) | CeFe3+3(AsO4)2(OH)6 |
8.BL.13 | Florencite-(Sm) | SmAl3(PO4)2(OH)6 |
8.BL.13 | Unnamed (As-analogue of Zaïrite) | (Bi,Pb)Fe3+3(AsO4)2(OH)6 |
8.BL.15 | Viitaniemiite | Na(Ca,Mn2+)Al(PO4)(F,OH)3 |
8.BL.25 | Pattersonite | PbFe3+3(PO4)2(OH)5 · H2O |
Other Information
Notes:
Walenta and Wimmenauer (1961) write: scarcely attacked by HNO3 or HCl, dissolved by hot H2SO4. Walenta (1966) writes: easily soluble in 1:1 HCl, more slowly in 1:1 HNO3.
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 Weilerite
mindat.org URL:
https://www.mindat.org/min-4258.html
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References for Weilerite
Reference List:
Scott, Keith M. (1987) Solid solution in, and classification of, gossan-derived members of the alunite-jarosite family, northwest Queensland, Australia. American Mineralogist, 72 (1-2) 178-187
Localities for Weilerite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- 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.
All localities listed without proper references should be considered as questionable.
Australia | |
| Lancaster +1 other reference |
Germany | |
| www.jkrieger.de (2000) |
| www.mindat.org/forum.php?read +3 other references |
Greece | |
| Hanke (1998) +1 other reference |
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