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Parsettensite

A valid IMA mineral species - grandfathered
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03897450014977208142066.jpg
Parsettensite

Foote Lithium Co. Mine, Kings Mountain, Cleveland County, North Carolina, USA
03457310014950792253602.jpg
Parsettensite

Foote Lithium Co. Mine, Kings Mountain, Cleveland County, North Carolina, USA
04180360014950283027834.jpg
Parsettensite

Tanatz Alp, Splügen, Rheinwald, Viamala Region, Grisons, Switzerland
00925380014957457027593.jpg
Parsettensite

Foote Lithium Co. Mine, Kings Mountain, Cleveland County, North Carolina, USA
09862460014947285646702.jpg
Parsettensite

Foote Lithium Co. Mine, Kings Mountain, Cleveland County, North Carolina, USA
04180360014950283027834.jpg
Parsettensite

Tanatz Alp, Splügen, Rheinwald, Viamala Region, Grisons, Switzerland
03897450014977208142066.jpg
Parsettensite

Foote Lithium Co. Mine, Kings Mountain, Cleveland County, North Carolina, USA
03457310014950792253602.jpg
Parsettensite

Foote Lithium Co. Mine, Kings Mountain, Cleveland County, North Carolina, USA
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About ParsettensiteHide

04511310015240105525290.jpg
Parsettens I

Parsettens Alp, Tinizong, Surses, Albula Region, Grisons, Switzerland
Formula:
(K,Na,Ca)7.5(Mn,Mg)49Si72O168(OH)50 · nH2O
Previous, simplified formula: K1.2Mn8(Si,Al)12O26(OH)10.
Colour:
Yellowish brown to honey-yellow, light brown, copper-red
Lustre:
Vitreous, Metallic, Sub-Metallic
Hardness:
1½ - 4
Specific Gravity:
2.59
Crystal System:
Monoclinic
Name:
Named in 1923 by Johann Jakob after the type locality, Alp Parsettens.
Dimorph of:
Zussmanite
May be visually similar to ganophyllite and bementite.
Compare also the chemically similar coombsite.


Unique IdentifiersHide

Mindat ID:
3125
Long-form identifier:
mindat:1:1:3125:3
GUID
(UUID V4):
9e2497f8-6a08-4ca1-9dc5-f64ef5e186ef

IMA Classification of ParsettensiteHide

IMA status:
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
(K,Na,Ca)7.5(Mn,Mg)49Si72O168(OH)50 · nH2O
First published:
1923
Type description reference:
Jakob, J. (1923) Vier Mangansilikate aus dem Val d'Err (Kt. Graubünden). Schweizerische Mineralogische und Petrographische Mitteilungen: 3: 227-237.

Classification of ParsettensiteHide

Strunz-mindat (2024):
9.EG.40

9 : SILICATES (Germanates)
E : Phyllosilicates
G : Double nets with 6-membered and larger rings
Dana 8th ed.:
74.1.3.1

74 : PHYLLOSILICATES Modulated Layers
1 : Modulated Layers with joined islands
Hey's CIM Ref.:
14.17.9

14 : Silicates not Containing Aluminum
17 : Silicates 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
PsnIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
PsnWarr (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 ParsettensiteHide

Lustre:
Vitreous, Metallic, Sub-Metallic
Transparency:
Transparent
Comment:
metallic appearance due to strong colour and strong reflection on cleavages
Colour:
Yellowish brown to honey-yellow, light brown, copper-red
Streak:
Brownish yellow
Hardness:
1½ - 4 on Mohs scale
Comment:
No value is given in the original description. A value of ~1.5 is given in the Handbook of Mineralogy, but seems very doubtful (too low). Range given here is based on some uncertain references and by comparison with stilpnomelane (Fe analogue).
Tenacity:
Flexible
Cleavage:
Perfect
[001] Perfect
Comment:
Single flakes are rather brittle.
Density:
2.59 g/cm3 (Measured)    2.76 g/cm3 (Calculated)

Optical Data of ParsettensiteHide

Type:
Biaxial (+/-)
RI values:
nα = 1.546 nβ = 1.576 nγ = 1.576
Birefringence:
0.030
Max Birefringence:
δ = 0.030
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
none
Pleochroism:
Visible
Comments:
colourless - pale yellow, greenish yellow

Chemistry of ParsettensiteHide

Mindat Formula:
(K,Na,Ca)7.5(Mn,Mg)49Si72O168(OH)50 · nH2O

Previous, simplified formula: K1.2Mn8(Si,Al)12O26(OH)10.
Elements listed:
Ca, H, K, Mg, Mn, Na, O, Si - search for minerals with similar chemistry
Common Impurities:
Ti,B,Fe,V,Mg,Ba,Cl,C,P

Crystallography of ParsettensiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 39.10 Å, b = 22.84 Å, c = 17.95 Å
β = 135.60°
Ratio:
a:b:c = 1.712 : 1 : 0.786
Unit Cell V:
11215.7 ų
Z:
12
Morphology:
platy crystals, lamellar, massive
Twinning:
Invariably twinned.
Comment:
C2/m setting; pseudo-orthorhombic, pseudo-hexagonal

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0001653ParsettensiteEggleton R A, Guggenheim S (1994) The use of electron optical methods to determine the crystal structure of a modulated phyllosilicate: Parsettensite American Mineralogist 79 426-43719940293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
12.1 Å(100)
6.2 Å(20)
4.5 Å(40)
4.2 Å(60)
3.84 Å(50)
3.70 Å(50)
3.26 Å(20)
3.14 Å(50)
2.79 Å(80)
2.65 Å(100)
2.42 Å(50)
2.36 Å(40)
2.18 Å(40)
2.04 Å(20)
1.943 Å(10)
1.634 Å(80)
1.617 Å(60)
1.580 Å(50)
1.520 Å(10)
1.444 Å(10)
1.410 Å(10)
1.388 Å(10)
1.320 Å(100)
1.300 Å(10)
1.230 Å(20)
Comments:
ICDD 25-8

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
High-𝑇 alteration and/or metamorphism
32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits

Type Occurrence of ParsettensiteHide

Type Locality:
ⓘ Parsettens Alp, Tinizong (Tinzen), Surses, Albula Region, Grisons, Switzerland
Place of Conservation of Type Material:
Federal Institute of Technology, Zurich, Switzerland, 194806.
The Natural History Museum, London, England.
Harvard University, Cambridge, Massachusetts, USA, 90497.
Geological Setting of Type Material:
metamorphosed manganese deposit
Reference:
Jakob, J. (1923) Vier Mangansilikate aus dem Val d'Err (Kt. Graubünden). Schweizerische Mineralogische und Petrographische Mitteilungen: 3: 227-237.
Download:
http://rruff.info/rruff_1.0/uploads/SMPM3_227.pdf

Synonyms of ParsettensiteHide

Other Language Names for ParsettensiteHide

Simplified Chinese:水硅锰石

Relationship of Parsettensite to other SpeciesHide

Member of:
Stilpnomelane Group
Other Members of this group:
ChalcoditeK(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27Tric. 1 : P1
Franklinphilite(K,Na)4(Mn2+,Mg,Zn)48(Si,Al)72(O,OH)216 · 6H2OTric.
LennilenapeiteK6-7(Mg,Mn,Fe,Zn)48(Si,Al)72(O,OH)216 · 16H2OTric.
Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2OTric. 1 : P1

Common AssociatesHide

Associated Minerals Based on Photo Data:
6 photos of Parsettensite associated with AlbiteNa(AlSi3O8)
5 photos of Parsettensite associated with Neotocite(Mn,Fe,Mg)SiO3 · H2O
3 photos of Parsettensite associated with TinzeniteCa2Mn2+4Al4[B2Si8O30](OH)2
3 photos of Parsettensite associated with FluorapatiteCa5(PO4)3F
2 photos of Parsettensite associated with QuartzSiO2
1 photo of Parsettensite associated with BrauniteMn2+Mn3+6(SiO4)O8
1 photo of Parsettensite associated with RhodoniteCaMn3Mn[Si5O15]
1 photo of Parsettensite associated with PyriteFeS2
1 photo of Parsettensite associated with LithiomarsturiteLiCaMn3Si5O14(OH)
1 photo of Parsettensite associated with BikitaiteLiAlSi2O6 · 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.35ZussmaniteK(Fe,Mg,Mn)13(Si,Al)18O42(OH)14Trig. 3 : R3
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.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 ParsettensiteHide

In UV light:
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 ParsettensiteHide

References for ParsettensiteHide

Localities for ParsettensiteHide

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.
China
 
  • Hubei
Jingfang Jin and Hui Jin (2000)
  • Shaanxi
    • Ankang
      • Ziyang County
Pingyi Wan (2002)
    • Hanzhong
      • Xixiang County
Pingyi Wan (2002)
      • Zhenba County
Pingyi Wan (2002)
  • Sichuan
    • Dazhou
      • Wanyuan Co.
Pingyi Wan (2002)
Pingyi Wan (2002)
France
 
  • Occitanie
    • Hautes-Pyrénées
Le Règne Minéral 47: 5-21
Indonesia
 
  • Banten Province
    • Cikotok Gold District
Marcoux et al. (1993) +1 other reference
Israel
 
  • Southern District (HaDarom District)
    • Tamar Regional Council
      • Hatrurim Basin
Krzątała et al. (2023)
Italy
 
  • Liguria
    • Genoa
      • Ne
Ricerche chimiche sulla tinzenite e parsettensite della miniera di Cassagna (Liguria) +1 other reference
Cortesogno et al. (1979)
        • Reppia
Pipino (1984)
    • La Spezia Province
      • Rocchetta di Vara
Dr. Uwe Kolitsch (EDS+XRD)
  • Piedmont
    • Cuneo Province
      • Pontechianale
Piccoli (2002) +1 other reference
    • Metropolitan City of Turin
      • Cesana Torinese
Martin et al. (1984) +3 other references
      • Pragelato
Piccoli et al. (2007)
Japan
 
  • Iwate Prefecture
    • Kunohe-gun
      • Noda
Watanabe (1959)
  • Kochi Prefecture
    • Nankoku city
Minerals Unlimited label from 1950s +1 other reference
  • Saitama Prefecture
    • Hidaka City
Collection of NHM
  • Shiga Prefecture
    • Takashima City
Masutomi Museum specimen (Kyoto) +1 other reference
Kazakhstan
 
  • Ulytau Region
    • Karazhal
      • Zhayrem (Zhairem)
Brusnitsyn et al. (2021)
New Zealand
 
  • Otago Region
    • Clutha District
Sameshima et al. (1991)
Romania
 
Hîrtopanu et al. (2003) +1 other reference
Russia
 
  • Bashkortostan
Brusnitsyn et al. (2009)
    • Sibay
Brusnitsyn (2006)
    • Uchalinsky District
Brusnitsyn +3 other references
  • Kamchatka Krai
    • Milkovsky District
      • Tolbachik Volcanic field
        • Plosky Tolbachik Volcano
Sharygin et al. (2018)
  • Khakassia (Republic of Khakassia)
    • Askizsky Rayon
      • Askiz ore district
Kassandrov et al. (2009)
Kassandrov et al. (2009)
South Africa
 
  • Northern Cape
    • John Taolo Gaetsewe District Municipality
      • Joe Morolong Local Municipality
Von Bezing (1991)
Switzerland
 
  • Grisons
    • Albula Region
      • Surses
        • Mulegns
Geiger T. (1948)
        • Tinizong (Tinzen)
Geiger T. (1948)
Mandarino (2001)
Schweiz.Min.Petr.Mitt. (1923)
    • Maloja Region
      • Samedan
        • Piz Corvatsch
Stalder et al. (1998)
    • Plessur Region
      • Arosa
        • Langwies
          • Fondei Valley
Geiger T. (1948) +2 other references
Geiger T. (1948)
Geiger T. (1948) +1 other reference
    • Viamala Region
      • Ferrera
        • Ausserferrera
Brugger et al. (1996)
      • Rheinwald
        • Splügen
Stalder et al. (1998) +1 other reference
USA
 
  • California
    • Sierra County
      • Port Wine Mining District
        • Grass Flat
Mike Scott S105697 from Cureton FWZ ID ...
    • Sonoma County
      • Coast Range
        • Russian River Mining District
Wood (1979)
    • Stanislaus County
      • Ladd-Buckeye Mining District
        • Mount Oso
Huebner +3 other references
  • Maine
    • Oxford County
      • Greenwood
Found Oct 2021 and optically studied. ...
      • Paris
Found in material from my 2019 ongoing ... +2 other references
  • North Carolina
    • Cleveland County
      • Kings Mountain
Mineralogical Record (1994)
    • Gaston County
Identical to parsettensite samples ...
Smithsonian Institution Mineral ...
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