Zussmanite
A valid IMA mineral species
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About Zussmanite
Formula:
K(Fe,Mg,Mn)13(Si,Al)18O42(OH)14
Colour:
Light to medium green
Lustre:
Sub-Vitreous, Resinous, Greasy
Specific Gravity:
3.146
Crystal System:
Trigonal
Name:
Named after Jack Zussman (1924 - ), Professor of Mineralogy, University of Manchester (England).
Prof. Zussman was one of the authors of the Rock-Forming Minerals book series (W.A. Deer, R.A. Howie and J. Zussman).
Prof. Zussman was one of the authors of the Rock-Forming Minerals book series (W.A. Deer, R.A. Howie and J. Zussman).
Isostructural with:
Fe2+-analogue of Coombsite.
Dark green micaceous mineral in stilpnomelane and quartz gneiss. A modulated phyllosilicate.
Dark green micaceous mineral in stilpnomelane and quartz gneiss. A modulated phyllosilicate.
Unique Identifiers
Mindat ID:
4434
Long-form identifier:
mindat:1:1:4434:5
GUID
(UUID V4):
(UUID V4):
75e21d50-af30-4569-addf-1bb37e43f553
IMA Classification of Zussmanite
Approved
Approval year:
1964
Classification of Zussmanite
9.EG.35
9 : SILICATES (Germanates)
E : Phyllosilicates
G : Double nets with 6-membered and larger rings
9 : SILICATES (Germanates)
E : Phyllosilicates
G : Double nets with 6-membered and larger rings
74.1.4.1
74 : PHYLLOSILICATES Modulated Layers
1 : Modulated Layers with joined islands
74 : PHYLLOSILICATES Modulated Layers
1 : Modulated Layers with joined islands
16.16.17
16 : Silicates Containing Aluminum and other Metals
16 : Aluminosilicates of Mn
16 : Silicates Containing Aluminum and other Metals
16 : Aluminosilicates of Mn
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Symbol | Source | Reference |
---|---|---|
Zus | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Zus | Warr (2020) | Warr, L.N. (2020) Recommended abbreviations for the names of clay minerals and associated phases. Clay Minerals, 55, 261–264 doi:10.1180/clm.2020.30 |
Physical Properties of Zussmanite
Sub-Vitreous, Resinous, Greasy
Transparency:
Transparent
Colour:
Light to medium green
Tenacity:
Flexible
Cleavage:
Perfect
{0001}
{0001}
Fracture:
Micaceous
Density:
3.146 g/cm3 (Measured) 3.14 g/cm3 (Calculated)
Optical Data of Zussmanite
Type:
Uniaxial (-)
RI values:
nω = 1.643 nε = 1.623
Birefringence:
0.020
Max Birefringence:
δ = 0.020
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Optical Extinction:
parallel
Pleochroism:
Weak
Comments:
O = pale green, e = colourless
Chemistry of Zussmanite
Mindat Formula:
K(Fe,Mg,Mn)13(Si,Al)18O42(OH)14
Common Impurities:
Na,Ti
Crystallography of Zussmanite
Crystal System:
Trigonal
Class (H-M):
3 - Pyramidal
Space Group:
R3
Cell Parameters:
a = 11.66 Å, c = 28.69 Å
Ratio:
a:c = 1 : 2.461
Unit Cell V:
3,377.99 ų (Calculated from Unit Cell)
Z:
3
Morphology:
Platy granular
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) |
---|---|---|---|---|---|---|---|
0014450 | Zussmanite | Lopes-Vieira A, Zussman J (1969) Further detail on the crystal structure of zussmanite Mineralogical Magazine 37 49-60 | 1969 | Laytonville district, Mendocino County, California | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
9.60 Å | (100) |
4.78 Å | (100) |
3.78 Å | (50) |
3.69 Å | (50) |
3.19 Å | (80) |
2.74 Å | (50) |
2.20 Å | (50) |
1.908 Å | (50) |
Comments:
Very similar to the data of coombsite.
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Near-surface Processes | |
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47) | |
High-𝑇 alteration and/or metamorphism | |
31 : Thermally altered carbonate, phosphate, and iron formations |
Type Occurrence of Zussmanite
General Appearance of Type Material:
Green grains and bands of grains in black matrix
Geological Setting of Type Material:
Blue-schist facies metamorphism.
Associated Minerals at Type Locality:
Synonyms of Zussmanite
Other Language Names for Zussmanite
Common Associates
Associated Minerals Based on Photo Data:
3 photos of Zussmanite associated with Steenstrupine-(Ce) | Na14Mn2+2Fe3+2Ce6Zr(Si6O18)2(PO4)6(PO3OH)(OH)2 · 2H2O |
3 photos of Zussmanite associated with Stilpnomelane | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O |
2 photos of Zussmanite associated with Howieite | Na(Fe,Mn)10(Fe,Al)2Si12O31(OH)13 |
1 photo of Zussmanite associated with Spessartine | Mn2+3Al2(SiO4)3 |
1 photo of Zussmanite associated with Pumpellyite-(Mg) | Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O |
Related Minerals - Strunz-mindat Grouping
9.EG.05 | Cymrite | BaAl2Si2(O,OH)8 · H2O |
9.EG.10 | Naujakasite | (Na,K)6(Fe2+,Mn2+,Ca)(Al,Fe)4Si8O26 |
9.EG.10 | Manganonaujakasite | Na6(Mn2+,Fe2+)Al4Si8O26 |
9.EG.15 | Dmisteinbergite | Ca(Al2Si2O8) |
9.EG.20 | Kampfite | Ba12(Si11Al5)O31(CO3)8Cl5 |
9.EG.25 | Strätlingite | Ca2Al2SiO7 · 8H2O |
9.EG.25 | Vertumnite | Ca4Al4Si4O6(OH)24 · 3H2O |
9.EG.30 | Eggletonite | (Na,K,Ca)2(Mn,Fe)8(Si,Al)12O29(OH)7 · 11H2O |
9.EG.30 | Ganophyllite | (K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 · 8H2O |
9.EG.30 | Tamaite | (Ca,K,Ba,Na)3-4Mn24(Si,Al)40(O,OH)112 · 21H2O |
9.EG.35 | Coombsite | KMn2+13(Si,Al)18O42(OH)14 |
9.EG.40 | Franklinphilite | (K,Na)4(Mn2+,Mg,Zn)48(Si,Al)72(O,OH)216 · 6H2O |
9.EG.40 | Lennilenapeite | K6-7(Mg,Mn,Fe,Zn)48(Si,Al)72(O,OH)216 · 16H2O |
9.EG.40 | Parsettensite | (K,Na,Ca)7.5(Mn,Mg)49Si72O168(OH)50 · nH2O |
9.EG.40 | Stilpnomelane | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O |
9.EG.40 | Chalcodite | K(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27 |
9.EG.45 | Latiumite | (Ca,K)4(Si,Al)5O11(SO4,CO3) |
9.EG.45 | Tuscanite | KCa6(Si,Al)10O22(SO4,CO3)2(OH) · H2O |
9.EG.45 | Levantite | KCa3Al2(SiO4)(Si2O7)(PO4) |
9.EG.50 | Jagoite | Pb18Fe3+4[Si4(Si,Fe3+)6][Pb4Si16(Si,Fe)4]O82Cl6 |
9.EG.55 | Wickenburgite | CaPb3Al2Si10O24(OH)6 |
9.EG.60 | Hyttsjöite | Pb18Ba2Ca5Mn2+2Fe3+2Si30O90Cl · 6H2O |
9.EG.65 | Armbrusterite | K5Na7Mn15[(Si9O22)4](OH)10 · 4H2O |
9.EG.70 | Britvinite | [Pb7(OH)3F(BO3)2(CO3)][Mg4.5(OH)3(Si5O14)] |
9.EG.70 | Roymillerite | Pb24Mg9(Si10O28)(CO3)10(BO3)(SiO4)(OH)13O5 |
9.EG.75 | Bannisterite | (Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 · nH2O |
9.EG.75 | UM1989-30-SiO:AlBaCaFeHKMgMn | (Ba,Ca)(Mn,Fe,Mg)22(Si,Al)32O76(OH)16 · 12H2O |
9.EG.75 | Kayupovaite | Na2Mn10[(Si14Al2)O38(OH)8] · 7H2O |
Fluorescence of Zussmanite
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 Zussmanite
mindat.org URL:
https://www.mindat.org/min-4434.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Zussmanite
Reference List:
Localities for Zussmanite
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 | |
| unpublished data |
Chile | |
| Massonne et al. (1998) |
| Duhart et al. (2010) |
Norway | |
| Sigurd Stordal collection |
Russia | |
| Старикова (2011) |
USA | |
| Anderson (1977) |
| Agrell (1964) +4 other references |
| Anonymous (1964) +1 other reference |
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Laytonville Quarry, Laytonville, Coastal Range, Mendocino County, California, USA