Sursassite (original) (raw)
A valid IMA mineral species - grandfathered
About SursassiteHide
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Formula:
Mn2+2Al3(SiO4)(Si2O7)(OH)3
Colour:
Red-brown to copper-red
Crystal System:
Monoclinic
Name:
Named for the Sursass (Oberhalbstein) district of Switzerland, in which the type locality is situated.
P-T data suggest that the assemblage sursassite + quartz ± braunite is stable at T<400–450° C over a considerable pressure interval at least up to 10 kbar (Reinecke, 1986).
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:3832:0
f6e6b1ac-6077-43ac-aec1-a2da0cd69ae5
IMA Classification of SursassiteHide
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Approved, 'Grandfathered' (first described prior to 1959)
Classification of SursassiteHide
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9.BG.15
9 : SILICATES (Germanates)
B : Sorosilicates
G : Sorosilicates with mixed SiO4 and Si2O7 groups; cations in octahedral [6] and greater coordination
58.2.3.1
58 : SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
2 : Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
16.16.4
16 : Silicates Containing Aluminum and other Metals
16 : Aluminosilicates of Mn
Mineral SymbolsHide
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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Ss | 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 SursassiteHide
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Colour:
Red-brown to copper-red
Optical Data of SursassiteHide
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RI values:
_n_α = 1.736 _n_β = 1.755 _n_γ = 1.766
δ = 0.030
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Chemistry of SursassiteHide
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Mindat Formula:
Mn2+2Al3(SiO4)(Si2O7)(OH)3
Common Impurities:
Ti,Fe,Mg,Ca,Na,K,H2O
Crystallography of SursassiteHide
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Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 8.687(1) Å, b = 5.787(1) Å, c = 9.769(1) Å
β = 108.91(1)°
Ratio:
a:b:c = 1.501 : 1 : 1.688
Unit Cell V:
464.60 ų (Calculated from Unit Cell)
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0004986 | Sursassite | Nagashima M, Akasaka M, Minakawa T, Libowitzky E, Armbruster T (2009) Sursassite: hydrogen bonding, cation order, and pumpellyite intergrowth Sample Number: 1 American Mineralogist 94 1440-1449 |  |
2009 | Falotta, Switzerland | 0 | 293 |
| 0004987 | Sursassite | Nagashima M, Akasaka M, Minakawa T, Libowitzky E, Armbruster T (2009) Sursassite: hydrogen bonding, cation order, and pumpellyite intergrowth Sample Number: 2 American Mineralogist 94 1440-1449 | |
2009 | New Brunswick, Canada | 0 | 293 |
| 0004988 | Sursassite | Nagashima M, Akasaka M, Minakawa T, Libowitzky E, Armbruster T (2009) Sursassite: hydrogen bonding, cation order, and pumpellyite intergrowth Sample Number: 3 American Mineralogist 94 1440-1449 | |
2009 | Kamisugai, Japan | 0 | 293 |
| 0004989 | Sursassite | Nagashima M, Akasaka M, Minakawa T, Libowitzky E, Armbruster T (2009) Sursassite: hydrogen bonding, cation order, and pumpellyite intergrowth Sample Number: 4 American Mineralogist 94 1440-1449 | |
2009 | Kamogawa, Japan | 0 | 293 |
| 0004990 | Sursassite | Nagashima M, Akasaka M, Minakawa T, Libowitzky E, Armbruster T (2009) Sursassite: hydrogen bonding, cation order, and pumpellyite intergrowth Sample Number: 5 American Mineralogist 94 1440-1449 | |
2009 | Molinello, Italy | 0 | 293 |
| 0004991 | Sursassite | Nagashima M, Akasaka M, Minakawa T, Libowitzky E, Armbruster T (2009) Sursassite: hydrogen bonding, cation order, and pumpellyite intergrowth Sample Number: 6 American Mineralogist 94 1440-1449 | |
2009 | Molinello, Italy | 0 | 293 |
| 0004992 | Sursassite | Nagashima M, Akasaka M, Minakawa T, Libowitzky E, Armbruster T (2009) Sursassite: hydrogen bonding, cation order, and pumpellyite intergrowth Sample Number: 7 American Mineralogist 94 1440-1449 | |
2009 | Gambatesa, Italy | 0 | 293 |
| 0006842 | Sursassite | Gottschalk M, Fockenberg T, Grevel K-D, Wunder B, Wirth R, Schreyer W, Maresch W V (2000) Crystal structure of the high-pressure phase Mg4(MgAl)Al4[Si6O21/(OH)7]: an analogue of sursassite European Journal of Mineralogy 12 935-945 | 2000 | 0 | 293 | ||
| 0007270 | Sursassite | Hatert F, Fransolet A M, Wouters J, Bernhardt H J (2008) The crystal structure of sursassite from the Lienne Valley, Stavelot Massif, Belgium European Journal of Mineralogy 20 993-998 | 2008 | Lienne syncline, Stravelot Massif, Belgium | 0 | 293 | |
| 0007356 | Sursassite | Mellini M, Merlino S, Pasero M (1984) X-ray and HRTEM study of sursassite: crystal structure, stacking disorder, and sursassite-pumpellyite intergrowth Physics and Chemistry of Minerals 10 99-105 | 1984 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.56 Å | (50) |
| 3.72 Å | (50) |
| 2.88 Å | (70) |
| 2.82 Å | (100) |
| 2.66 Å | (60) |
| 2.57 Å | (70) |
| 2.14 Å | (60) |
Geological EnvironmentHide
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Type Occurrence of SursassiteHide
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Other Language Names for SursassiteHide
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Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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Other InformationHide
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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 SursassiteHide
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References for SursassiteHide
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Localities for SursassiteHide
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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the 
symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
Locality ListHide
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- 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.