Arsenogorceixite
A valid IMA mineral species
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About Arsenogorceixite
Formula:
BaAl3(AsO4)(AsO3OH)(OH)6
May contain minor Fe, Cu and other elements, causing variable colours.
Colour:
White, yellowish white, yellow, greenish yellow, greenish, pale blue, colourless.
Lustre:
Sub-Vitreous, Resinous, Waxy, Greasy, Dull
Hardness:
4
Specific Gravity:
3.655
Crystal System:
Trigonal
Member of:
Name:
Named by Kurt Walenta and Pete J. Dunn in 1993 in allusion to it being the ARSENate analogue of Gorceixite.
Unique Identifiers
Mindat ID:
304
Long-form identifier:
mindat:1:1:304:9
IMA Classification of Arsenogorceixite
Classification of Arsenogorceixite
8.BL.10
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
Dana 7th ed.:
42.7.4.5
43.4.1.9
43 : COMPOUND PHOSPHATES, ETC.
4 : Anhydrous Compound Phosphates, etc·, Containing Hydroxyl or Halogen
43 : COMPOUND PHOSPHATES, ETC.
4 : Anhydrous Compound Phosphates, etc·, Containing Hydroxyl or Halogen
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 for Standard |
|---|---|---|
| Agcx | 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 Arsenogorceixite
Sub-Vitreous, Resinous, Waxy, Greasy, Dull
Transparency:
Transparent, Translucent
Colour:
White, yellowish white, yellow, greenish yellow, greenish, pale blue, colourless.
Streak:
White.
Hardness:
4 on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Probably {0001} perfect as in other members of the group.
Probably {0001} perfect as in other members of the group.
Fracture:
Conchoidal
Density:
3.655 g/cm3 (Measured) 3.71 g/cm3 (Calculated)
Optical Data of Arsenogorceixite
Type:
Uniaxial (-)
RI values:
nω = 1.645 nε = 1.645
Birefringence:
0.000
Surface Relief:
High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized uniaxial interference figure - the conoscopic
(convergent-light, Bertrand-lens-in) view, for a grain cut with the optic axis
centred and vertical. The coloured rings are isochromatics, computed with the
same physics as the Michel-Lévy bar above; the dark cross is the isogyre.
For a genuinely uniaxial mineral viewed this way, that cross stays perfectly stationary if you rotate the stage - unlike a biaxial mineral, where it splits apart on rotation. That invariance is itself the standard diagnostic test for telling uniaxial and biaxial minerals apart at the microscope.
For a genuinely uniaxial mineral viewed this way, that cross stays perfectly stationary if you rotate the stage - unlike a biaxial mineral, where it splits apart on rotation. That invariance is itself the standard diagnostic test for telling uniaxial and biaxial minerals apart at the microscope.
Optical Extinction:
Parallel
Pleochroism:
Non-pleochroic
Chemistry of Arsenogorceixite
Mindat Formula:
BaAl3(AsO4)(AsO3OH)(OH)6
May contain minor Fe, Cu and other elements, causing variable colours.
May contain minor Fe, Cu and other elements, causing variable colours.
Element Weights:
Chemical Analysis
Oxide wt%:
| 1 | |
|---|---|
| BaO | 24.9 % |
| SrO | 0.9 % |
| CaO | 0.2 % |
| FeO | 0.7 % |
| Al2O3 | 27.8 % |
| As2O5 | 27.2 % |
| P2O5 | 5.9 % |
| H2O | 10.9 % |
| F | 2.5 % |
| Total: | 101 % |
Sample references:
| ID | Locality | Reference | Notes |
|---|---|---|---|
| 1 | Clara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany |
Crystallography of Arsenogorceixite
Crystal System:
Trigonal
Class (H-M):
3m(32/m) - Hexagonal Scalenohedral
Space Group:
R3m
Setting:
R3m
Cell Parameters:
a = 7.103 Å, c = 17.394 Å
Ratio:
a:c = 1 : 2.449
Unit Cell V:
760.00 ų (Calculated from Unit Cell)
Z:
3
Morphology:
Tabular crystals, flattened on (0001), as pseudooctahedral crystals showing {1011} and {0001}, and as spherulitic aggregates of radiating crystals.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.84 Å | (80) |
| 3.55 Å | (80) |
| 3.02 Å | (100) |
| 2.30 Å | (60) |
| 1.930 Å | (60) |
| 1.774 Å | (50) |
| 1.515 Å | (50) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 34 : Complex granite pegmatites | |
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47c : [Carbonates, phosphates, borates, nitrates] | |
| Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
| 48 : Soil leaching zone minerals | <0.6 |
Geological Setting:
Oxidized veins of hydrothermal polymetallic deposit
Type Occurrence of Arsenogorceixite
General Appearance of Type Material:
Minute rhombohedral crystals in crusts and aggregates.
Place of Conservation of Type Material:
Staatliches Museum für Naturkunde-Stuttgart, Germany.
Geological Setting of Type Material:
Oxidized veins of hydrothermal polymetallic deposit.
Associated Minerals at Type Locality:
Synonyms of Arsenogorceixite
Other Language Names for Arsenogorceixite
Dutch:Arsenogorceixiet
French:Arséenogorceixite
Norwegian:Arsenogorceixitt
Russian:Вейлерит
Spanish:Arsenogorceixita
Relationship of Arsenogorceixite to other Species
Member of:
Other Members of Dussertite Group:
| Arsenocrandallite | CaAl3(AsO4)(AsO3OH)(OH)6 | Trig. 3m(32/m) |
| Arsenoflorencite-(Ce) | CeAl3(AsO4)2(OH)6 | Trig. 3m(32/m) : R3m |
| Arsenoflorencite-(La) | LaAl3(AsO4)2(OH)6 | Trig. 3m(32/m) : R3m |
| 'Arsenoflorencite-(Nd)' | NdAl3(AsO4)2(OH)6 | Trig. |
| Arsenogoyazite | SrAl3(AsO4)(AsO3OH)(OH)6 | Trig. 3m(32/m) : R3m |
| 'Arsenowaylandite' | BiAl3(AsO4)2(OH)6 | Trig. |
| Dussertite | BaFe3+3(AsO4)(AsO3OH)(OH)6 | Trig. 3m(32/m) : R3m |
| Graulichite-(Ce) | CeFe3+3(AsO4)2(OH)6 | Trig. 3m(32/m) : R3m |
| Graulichite-(La) | LaFe3+3(AsO4)2(OH)6 | Trig. 3m(32/m) : R3m |
| Karlseifertite | Pb(Ga2Ge)(AsO4)2(OH)6 | Trig. 3m(32/m) : R3m |
| Philipsbornite | PbAl3(AsO4)(AsO3OH)(OH)6 | Trig. 3m(32/m) : R3m |
| Segnitite | PbFe3+3AsO4(AsO3OH)(OH)6 | Trig. 3m(32/m) : R3m |
Forms a series with:
Common Associates
Associations Based on Photo Data:
| 6 photos of Arsenogorceixite associated with Quartz | SiO2 |
| 5 photos of Arsenogorceixite associated with Cornwallite | Cu5(AsO4)2(OH)4 |
| 3 photos of Arsenogorceixite associated with Olivenite | Cu2(AsO4)(OH) |
| 3 photos of Arsenogorceixite associated with Goudeyite | AlCu6(AsO4)3(OH)6 · 3H2O |
| 3 photos of Arsenogorceixite associated with Chenevixite | Cu2Fe3+2(AsO4)2(OH)4 |
| 2 photos of Arsenogorceixite associated with Hydrokenoralstonite | Na0.5(Al,Mg)2(F,OH)6 · H2O |
| 2 photos of Arsenogorceixite associated with Fluorite | CaF2 |
| 2 photos of Arsenogorceixite associated with 'Mansfieldite-Scorodite Series' | |
| 2 photos of Arsenogorceixite associated with Atacamite | Cu2(OH)3Cl |
| 2 photos of Arsenogorceixite associated with Bariopharmacosiderite | Ba0.5Fe3+4(AsO4)3(OH)4 · 5H2O |
Related Minerals - Strunz-mindat Grouping
| 8.BL. | Kiryuite | NaMnAl(PO4)F3 |
| 8.BL. | Metaheimite | PbCu2(AsO4)(OH)3 |
| 8.BL. | Graulichite-(La) | LaFe3+3(AsO4)2(OH)6 |
| 8.BL. | Cloudite | BaFe3+3(PO4)(SO4)(OH)6 |
| 8.BL. | Oberwolfachite | SrFe3+3(AsO4)(SO4)(OH)6 |
| 8.BL. | Arsenobenauite | SrFe3+3(AsO4)(AsO3OH)(OH)6 |
| 8.BL.05 | Gallobeudantite | PbGa3(AsO4)(SO4)(OH)6 |
| 8.BL.05 | Slottaite | SrFe3+3(PO4)(SO4)(OH)6 |
| 8.BL.05 | Corkite | PbFe3+3(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 | 'UM2011-07-POSO:AlBaH' | BaAl3(PO4)(SO4)(OH)6 |
| 8.BL.05 | Kemmlitzite | SrAl3(AsO4)(SO4)(OH)6 |
| 8.BL.05 | Beudantite | PbFe3+3(AsO4)(SO4)(OH)6 |
| 8.BL.05 | Weilerite | BaAl3(AsO4)(SO4)(OH)6 |
| 8.BL.05 | Woodhouseite | CaAl3(PO4)(SO4)(OH)6 |
| 8.BL.05 | Svanbergite | SrAl3(PO4)(SO4)(OH)6 |
| 8.BL.10 | Segnitite | PbFe3+3AsO4(AsO3OH)(OH)6 |
| 8.BL.10 | Arsenogoyazite | SrAl3(AsO4)(AsO3OH)(OH)6 |
| 8.BL.10 | Dussertite | BaFe3+3(AsO4)(AsO3OH)(OH)6 |
| 8.BL.10 | Galloplumbogummite | Pb(Ga,Al,Ge)3(PO4)2(OH)6 |
| 8.BL.10 | Stibiosegnitite | Pb(Fe3+2.5Sb5+0.5)(AsO4)2(OH)6 |
| 8.BL.10 va | 'Viséite' | |
| 8.BL.10 | Arsenocrandallite | CaAl3(AsO4)(AsO3OH)(OH)6 |
| 8.BL.10 | Benauite | SrFe3+3(PO4)(PO3OH)(OH)6 |
| 8.BL.10 | Philipsbornite | PbAl3(AsO4)(AsO3OH)(OH)6 |
| 8.BL.10 | Crandallite | CaAl3(PO4)(PO3OH)(OH)6 |
| 8.BL.10 | Springcreekite | BaV3+3(PO4)2(OH,H2O)6 |
| 8.BL.10 | Eylettersite | Th0.75Al3(PO4)2(OH)6 |
| 8.BL.10 | Kintoreite | PbFe3(PO4)(PO3OH)(OH)6 |
| 8.BL.10 | Plumbogummite | PbAl3(PO4)(PO3OH)(OH)6 |
| 8.BL.10 | Gorceixite | BaAl3(PO4)(PO3OH)(OH)6 |
| 8.BL.10 | Goyazite | SrAl3(PO4)(PO3OH)(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 | Zaïrite | BiFe3+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 | 'Unnamed (As-analogue of Zaïrite)' | (Bi,Pb)Fe3+3(AsO4)2(OH)6 |
| 8.BL.13 | Arsenoflorencite-(Ce) | CeAl3(AsO4)2(OH)6 |
| 8.BL.13 | Graulichite-(Ce) | CeFe3+3(AsO4)2(OH)6 |
| 8.BL.13 | 'Arsenowaylandite' | BiAl3(AsO4)2(OH)6 |
| 8.BL.13 | Waylandite | BiAl3(PO4)2(OH)6 |
| 8.BL.13 | Florencite-(Sm) | SmAl3(PO4)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 |
Fluorescence of Arsenogorceixite
Not fluorescent in UV
Other Information
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 Arsenogorceixite
mindat.org URL:
https://www.mindat.org/min-304.html
Please feel free to link to this page.
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References for Arsenogorceixite
Reference List:
Walenta, K. (1981) Mineralien der Beudantit-Crandallitgruppe aus dem Schwarzwald: Arsenocrandallit und sulfatfreier Weilerit. Schweizerische Mineralogische und Petrographische Mitteilungen, 61, 23-35.(as sulphate-free weilerite)
Jambor, John L., Pertsev, Nikolai N., Roberts, Andrew C. (1996) New mineral names. American Mineralogist, 81. 249-254
Jambor, John L. (1999) Nomenclature of the alunite supergroup. The Canadian Mineralogist, 37 (6). 1323-1341
Localities for Arsenogorceixite
Showing 18 localities.
symbol to view information about a locality.
The 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).
All localities listed without proper references should be considered as questionable.
Australia | |
| Frost et al. (2012) |
France | |
| Favreau G. et al. (1996) |
| EDS analysed by Chollet Pascal at ... |
| www.mine-capgaronne.fr (2003) +1 other reference |
Germany (TL) | |
| Walenta et al. (1984) +5 other references |
| Am Min 50 (1965) +1 other reference |
| Wittern (2001) |
| |
| 81-82. +1 other reference |
Greece | |
| Schnorrer (1995) +1 other reference |
| |
| Fritz Schreiber collection +1 other reference |
Italy | |
| P.Stara +1 other reference |
Poland | |
| Macioch et al. (2018) |
| Pieczka et al. (2015) +1 other reference |
UK | |
| |
| G.Curtis collection. |
USA | |
| Anthony A. Longo et al. (2002) |
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Clara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany