Leogangite
A valid IMA mineral species
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About Leogangite
Formula:
Cu10(AsO4)4(SO4)(OH)6 · 8H2O
Colour:
Green with a bluish tint
Lustre:
Vitreous
Specific Gravity:
3.55 (Calculated)
Crystal System:
Monoclinic
Name:
Named for the Leogang mining district that includes the type locality mines at Schwarzleograben, Hütten, Leogang, Saalfelden, Salzburg, Austria.
Unique Identifiers
Mindat ID:
26518
Long-form identifier:
mindat:1:1:26518:0
IMA Classification of Leogangite
Approved
IMA Formula:
Cu2+10(As5+O4)4(S6+O4)(OH)6(H2O)4·4H2O
Approval year:
1998
First published:
2004
Classification of Leogangite
8.CC.15
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
C : With only medium-sized cations, RO4:H2O = 1:1.5
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
C : With only medium-sized cations, RO4:H2O = 1:1.5
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 |
|---|---|---|
| Lgg | 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 Leogangite
Vitreous
Transparency:
Transparent
Colour:
Green with a bluish tint
Streak:
Light green
Cleavage:
Perfect
parallel to (100)
parallel to (100)
Density:
3.55 g/cm3 (Calculated)
Optical Data of Leogangite
Type:
Biaxial (-)
RI values:
nω = 1.59 nε = 1.74 n = 1.744
2V:
Measured: 182°
Surface Relief:
High
Comments:
Blue-green to pale green.
Chemistry of Leogangite
Mindat Formula:
Cu10(AsO4)4(SO4)(OH)6 · 8H2O
Element Weights:
Common Impurities:
Si
Crystallography of Leogangite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 21.770(7) Å, b = 12.327(4) Å, c = 10.720(3) Å
β = 92.85(1)°
β = 92.85(1)°
Ratio:
a:b:c = 1.766 : 1 : 0.87
Unit Cell V:
2873 ų
Z:
4
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0014647 | Leogangite | Lengauer C L, Giester G, Kirchner E (2004) Leogangite, Cu10(AsO4)4(SO4)(OH)6*8H2O, a new mineral from the Leogang mining district, Salzburg province, Austria Mineralogy and Petrology 81 187-201 | 2004 | Leogang polymetallic ore district, Salzburg province, Austria | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 10.85 Å | (100) |
| 5.44 Å | (50) |
| 3.625 Å | (50) |
| 3.090 Å | (40) |
| 2.630 Å | (60) |
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 Leogangite
Co-Type Localities:
General Appearance of Type Material:
Aggregates of thin tabular crystals, flattened on {100} and elongated along [010], measuring up to 0.1 mm in length, 0.05 mm in width and 0.01 mm in thickness.
Place of Conservation of Type Material:
Natural History Museum, Vienna, Austria; M8873.
Geological Setting of Type Material:
Alteration product of arsenic-rich fahlore in vugs of a tennantite-bearing dolomite breccia, intergrown with olivenite and malachite.
Associated Minerals at Type Locality:
Synonyms of Leogangite
Other Language Names for Leogangite
Dutch:Leogangiet
German:Leogangit
Russian:Леогангит
Simplified Chinese:水羟硫砷铜石
Traditional Chinese:水羥硫砷銅石
Common Associates
Related Minerals - Strunz-mindat Grouping
| 8.CC. | Correianevesite | Fe2+Mn2+2(PO4)2 · 3H2O |
| 8.CC.05 | Landesite | Mn2+3-xFe3+x(PO4)2(OH)x · (3-x)H2O |
| 8.CC.05 | Reddingite | (Mn2+,Fe2+)3(PO4)2 · 3H2O |
| 8.CC.05 | Garyansellite | Mg2Fe3+(PO4)2(OH) · 2H2O |
| 8.CC.05 | Phosphoferrite | (Fe2+,Mn2+)3(PO4)2 · 3H2O |
| 8.CC.05 | Kryzhanovskite | (Fe3+,Mn2+)3(PO4)2(OH,H2O)3 |
| 8.CC.10 | Kaatialaite | Fe3+[AsO2(OH)2]3 · 5H2O |
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 Leogangite
mindat.org URL:
https://www.mindat.org/min-26518.html
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References for Leogangite
Reference List:
Kirchner, E., Lengauer, C. L., Giester, G. (2004) Leogangite, Cu10(AsO4)4(SO4)(OH)6·8H2O, a new mineral from the Leogang mining district, Salzburg province, Austria. Mineralogy and Petrology, 81 (1) 187-201 doi:10.1007/s00710-004-0032-x
Localities for Leogangite
Showing 21 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.
Austria | |
| G.Indra |
| Kirchner et al. (2004) |
| R.Poeverlein (2016) |
| Kirchner et al. (2004) |
| Poeverlein (2008) | |
| Thorne (n.d.) +1 other reference |
| C.Auer (2013) |
| Schnorrer et al. (2008) | |
| Der Aufschluß (2006) |
| Poeverlein et al. (2007) | |
| Putz et al. (2007) |
| Poeverlein et al. (2010) |
| Schnorrer et al. (2007) |
France | |
| Favreau et al. (2024) |
| Georges FAVREAU collection and EDX ... +1 other reference | |
Germany | |
| Schnorrer et al. (2008) |
Italy | |
| Fernando Caboni et al. (2024) |
| Fernando Caboni et al. (2024) | |
Portugal | |
| Pedro Alves analytical data |
Russia | |
| Nenasheva et al. (2011) |
Spain | |
| Uwe Kolitsch (SXRD analysis of Franceso Xavier Ortiz Rua sample) +1 other reference |
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Vogelhalt mining district, Vogel Alp, Schwarzleograben, Hütten, Leogang, Zell am See District, Salzburg, Austria