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Zussmanite

A valid IMA mineral species
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About ZussmaniteHide

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).
Isostructural with:
Fe2+-analogue of Coombsite.

Dark green micaceous mineral in stilpnomelane and quartz gneiss. A modulated phyllosilicate.


Unique IdentifiersHide

Mindat ID:
4434
Long-form identifier:
mindat:1:1:4434:5
GUID
(UUID V4):
75e21d50-af30-4569-addf-1bb37e43f553

IMA Classification of ZussmaniteHide

Approved
Approval year:
1964

Classification of ZussmaniteHide

9.EG.35

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
16.16.17

16 : Silicates Containing Aluminum and other Metals
16 : Aluminosilicates of Mn

Mineral SymbolsHide

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.

SymbolSourceReference
ZusIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
ZusWarr (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 ZussmaniteHide

Sub-Vitreous, Resinous, Greasy
Transparency:
Transparent
Colour:
Light to medium green
Tenacity:
Flexible
Cleavage:
Perfect
{0001}
Fracture:
Micaceous
Density:
3.146 g/cm3 (Measured)    3.14 g/cm3 (Calculated)

Optical Data of ZussmaniteHide

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.
Surface Relief:
Moderate
Optical Extinction:
parallel
Pleochroism:
Weak
Comments:
O = pale green, e = colourless

Chemistry of ZussmaniteHide

Mindat Formula:
K(Fe,Mg,Mn)13(Si,Al)18O42(OH)14
Common Impurities:
Na,Ti

Crystallography of ZussmaniteHide

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 StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0014450ZussmaniteLopes-Vieira A, Zussman J (1969) Further detail on the crystal structure of zussmanite Mineralogical Magazine 37 49-601969Laytonville district, Mendocino County, California0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
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 EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest 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 ZussmaniteHide

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 ZussmaniteHide

Other Language Names for ZussmaniteHide

Common AssociatesHide

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 HowieiteNa(Fe,Mn)10(Fe,Al)2Si12O31(OH)13
1 photo of Zussmanite associated with SpessartineMn2+3Al2(SiO4)3
1 photo of Zussmanite associated with Pumpellyite-(Mg)Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O

Related Minerals - Strunz-mindat GroupingHide

9.EG.05CymriteBaAl2Si2(O,OH)8 · H2OMon. 2 : P21
9.EG.10Naujakasite(Na,K)6(Fe2+,Mn2+,Ca)(Al,Fe)4Si8O26Mon.
9.EG.10ManganonaujakasiteNa6(Mn2+,Fe2+)Al4Si8O26Mon. 2/m : B2/m
9.EG.15DmisteinbergiteCa(Al2Si2O8)Trig. 3 2 : P3 1 2
9.EG.20KampfiteBa12(Si11Al5)O31(CO3)8Cl5Mon. m
9.EG.25SträtlingiteCa2Al2SiO7 · 8H2OTrig. 3m : R3m
9.EG.25VertumniteCa4Al4Si4O6(OH)24 · 3H2OMon. 2/m : P21/m
9.EG.30Eggletonite(Na,K,Ca)2(Mn,Fe)8(Si,Al)12O29(OH)7 · 11H2OMon.
9.EG.30Ganophyllite(K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 · 8H2OMon. 2/m
9.EG.30Tamaite(Ca,K,Ba,Na)3-4Mn24(Si,Al)40(O,OH)112 · 21H2OMon. 2/m : P21/b
9.EG.35CoombsiteKMn2+13(Si,Al)18O42(OH)14Trig.
9.EG.40Franklinphilite(K,Na)4(Mn2+,Mg,Zn)48(Si,Al)72(O,OH)216 · 6H2OTric.
9.EG.40LennilenapeiteK6-7(Mg,Mn,Fe,Zn)48(Si,Al)72(O,OH)216 · 16H2OTric.
9.EG.40Parsettensite(K,Na,Ca)7.5(Mn,Mg)49Si72O168(OH)50 · nH2OMon. 2/m : B2/m
9.EG.40Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2OTric. 1 : P1
9.EG.40ChalcoditeK(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27Tric. 1 : P1
9.EG.45Latiumite(Ca,K)4(Si,Al)5O11(SO4,CO3)Mon. 2 : P21
9.EG.45TuscaniteKCa6(Si,Al)10O22(SO4,CO3)2(OH) · H2OMon. 2/m : P21/b
9.EG.45LevantiteKCa3Al2(SiO4)(Si2O7)(PO4)Mon. 2 : P21
9.EG.50JagoitePb18Fe3+4[Si4(Si,Fe3+)6][Pb4Si16(Si,Fe)4]O82Cl6Hex. 6 m2 : P6c2
9.EG.55WickenburgiteCaPb3Al2Si10O24(OH)6Trig. 3m : P3 1c
9.EG.60HyttsjöitePb18Ba2Ca5Mn2+2Fe3+2Si30O90Cl · 6H2OTrig. 3 : R3
9.EG.65ArmbrusteriteK5Na7Mn15[(Si9O22)4](OH)10 · 4H2OMon. 2/m : B2/m
9.EG.70Britvinite[Pb7(OH)3F(BO3)2(CO3)][Mg4.5(OH)3(Si5O14)]Tric. 1 : P1
9.EG.70RoymilleritePb24Mg9(Si10O28)(CO3)10(BO3)(SiO4)(OH)13O5Tric. 1 : P1
9.EG.75Bannisterite(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 · nH2OMon. 2/m : B2/b
9.EG.75UM1989-30-SiO:AlBaCaFeHKMgMn(Ba,Ca)(Mn,Fe,Mg)22(Si,Al)32O76(OH)16 · 12H2O
9.EG.75KayupovaiteNa2Mn10[(Si14Al2)O38(OH)8] · 7H2OMon. 2/m : B2/b

Fluorescence of ZussmaniteHide

Not fluorescent in UV

Other InformationHide

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 ZussmaniteHide

References for ZussmaniteHide

Localities for ZussmaniteHide

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

- 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.
Australia
 
  • Tasmania
    • Circular Head municipality
      • Balfour-Temma district
        • Temma
unpublished data
Chile
 
  • Araucanía
    • Cautín Province
Massonne et al. (1998)
  • Los Lagos
    • Osorno Province
Duhart et al. (2010)
Norway
 
  • Buskerud
    • Drammen
Sigurd Stordal collection
Russia
 
  • Nenets Autonomous Okrug
    • Yugorskii Peninsula
      • Pai-Khoi Range (Paikhoi; Pay Khoy)
Старикова (2011)
USA
 
  • California
    • Mendocino County
      • Coastal Range
Anderson (1977)
Agrell (1964) +4 other references
        • Longvale
Anonymous (1964) +1 other reference
 
Mineral and/or Locality  
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