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Parsettensite

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Formula:
K1.2Mn8(Si,Al)12O26(OH)10
System:
Monoclinic
Colour:
Yellowish brown to ...
Lustre:
Vitreous, Metallic, Sub-Metallic
Hardness:
Name:
Named in 1923 by Johann Jakob after the type locality, Alp Parsettens.
Dimorph of:
This page provides mineralogical data about Parsettensite.

Classification of Parsettensite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
9.EG.40

9 : SILICATES (Germanates)
E : Phyllosilicates
G : Double nets with 6-membered and larger rings
74.1.3.1

74 : PHYLLOSILICATES Modulated Layers
1 : Modulated Layers with joined islands
14.17.9

14 : Silicates not Containing Aluminum
17 : Silicates of Mn
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First Recorded Occurrence of Parsettensite

Year of Discovery:
1923
Geological Setting of First Recorded Material:
metamorphosed manganese deposit

Physical Properties of Parsettensite

Vitreous, Metallic, Sub-Metallic
Diaphaneity (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 (Mohs):
Tenacity:
Flexible
Cleavage:
Perfect
[001] Perfect
Density:
2.59 g/cm3 (Measured)    2.76 g/cm3 (Calculated)

Crystallography of Parsettensite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Cell Parameters:
a = 39.10Å, b = 22.84Å, c = 17.95Å
α = 90°, β = 135.60°, γ = 90°
Ratio:
a:b:c = 1.712 : 1 : 0.786
Unit Cell Volume:
V 11215.7 ų
Z:
12
Morphology:
platy crystals, lamellar, massive
Twinning:
Invariably twinned.
Comment:
C2/m setting; pseudo-orthorhombic, pseudo-hexagonal

Optical Data of Parsettensite

Type:
Biaxial (+/-)
RI values:
nα = 1.546 nβ = 1.576 nγ = 1.576
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

Chemical Properties of Parsettensite

Formula:
K1.2Mn8(Si,Al)12O26(OH)10
Essential elements:
All elements listed in formula:
Common Impurities:
Ti,B,Fe,V,Mg,Ba,Cl,C,P

Relationship of Parsettensite to other Species

9.EG.05CymriteBaAl2Si2(O,OH)8 · H2O
9.EG.10Naujakasite(Na,K)6(Fe2+,Mn2+,Ca)(Al,Fe)4Si8O26
9.EG.10ManganonaujakasiteNa6(Mn2+,Fe2+)Al4Si8O26
9.EG.15DmisteinbergiteCaAl2Si2O8
9.EG.20KampfiteBa12(Si11Al5)O31(CO3)8Cl5
9.EG.25SträtlingiteCa2Al2SiO7 · 8H2O
9.EG.25VertumniteCa4Al4Si4O6(OH)24 · 3H2O
9.EG.30Eggletonite(Na,K,Ca)2(Mn,Fe)8(Si,Al)12O29(OH)7 · 11H2O
9.EG.30Ganophyllite(K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 · 8H2O
9.EG.30Tamaite(Ca,K,Ba,Na)3-4Mn24(Si,Al)40(O,OH)112 · 21H2O
9.EG.35CoombsiteK(Mn,Fe,Mg)13(Si,Al)18O42(OH)14
9.EG.35ZussmaniteK(Fe,Mg,Mn)13(Si,Al)18O42(OH)14
9.EG.40Franklinphilite(K,Na)4(Mn,Zn,Mg,Fe)48(Si,Al)72(O,OH)216 · 6H2O
9.EG.40LennilenapeiteK6-7(Mg,Mn,Fe,Zn)48(Si,Al)72(O,OH)216 · 16H2O
9.EG.40Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al,Fe3+)8(Si,Al)12(O,OH)36 · nH2O
9.EG.45Latiumite(Ca,K)4(Si,Al)5O11(SO4,CO3)
9.EG.45Tuscanite(K(Ca,Na)6(Si,Al)10O22[SO4,CO3,(OH)2] · H2O
9.EG.50JagoitePb18Fe43+[Si4(Si,Fe3+)6][Pb4Si16(Si,Fe)4]O82Cl6
9.EG.55WickenburgiteCaPb3Al2Si10O24(OH)6
9.EG.60HyttsjöitePb18Ba2Ca5Mn22+Fe23+Si30O90Cl · 6H2O
9.EG.65ArmbrusteriteK5Na7Mn15[(Si9O22)4](OH)10 · 4H2O
9.EG.70Britvinite[Pb7(OH)3F(BO3)2(CO3)][Mg4.5(OH)3(Si5O14)]
9.EG.75BannisteriteCa0.5(K,Na)0.5(Mn,Fe,Zn)10(Si,Al)16O38(OH)8 · 5.5H2O
14.17.1RhodoniteMnSiO3
14.17.2TephroiteMn22+SiO4
14.17.3BrauniteMn2+Mn63+(SiO4)O8
14.17.4AlleghanyiteMn52+(SiO4)2(OH)2
14.17.5Ribbeite(Mn2+,Mg)5(SiO4)2(OH)2
14.17.6LeucophoeniciteMn72+(SiO4)3(OH)2
14.17.7JerrygibbsiteMn92+(SiO4)4(OH)2
14.17.8BementiteMn7Si6O15(OH)8
14.17.10YofortieriteMn5Si8O20(OH)2 · 8-9H2O

Other Names for Parsettensite

Name in Other Languages:
Simplified Chinese:水硅锰石

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.

References for Parsettensite

Reference List:
Jakob, J. (1923): Vier Mangansilikate aus dem Val d'Err (Kt. Graubünden). Schweiz. Mineral. Petrograph. Mitt., 3, 227-237.

American Mineralogist (1925): 10: 107. [Abs.]

Geiger, T. (1948) Manganerze in den Radiolariten Graubündens. Beitrage Geol. Schweiz., 27, 37-42 (in German).

Cortesogno, L., Lucchetti, G. and Penco A. M. (1979): Le mineralizzazioni a manganese nei diaspri delle ofioliti liguri: mineralogia e genesi. Rendiconti Soc. Ital. Mineral. Petrol. 35, 151-197. (in Italian)

Eggleton, R. A. and Guggenheim, S. (1994): The use of electron optical methods to determine the crystal structure of a modulated phyllosilicate: parsettensite. Am. Mineral. 79, 426-437.

Guggenheim, S. and Eggleton, R. A. (1994): A comparison of the structures and geometric stabilities of stilpnomelane and parsettensite: a distance least-squares (DLS) study. Am. Mineral. 79, 438-442.

Brusnitsyn, A. I.; Starikova, E. V.; Krivovichev, S. V.; Chukanov, N. V. (1999): Ba-bearing parsettensite from Kyzil-Tash Mn ore deposit (the South Urals). Zapiski Vserossiiskogo Mineralogicheskogo Obshchestva 128, 79-90 (in Russian).

Internet Links for Parsettensite

Localities for Parsettensite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
China
 
  • Hubei Province
Jingfang Jin and Hui Jin (2000): Journal of Gems and Gemmology 2(2), 36-39
  • Shaanxi Province
    • Ankang Prefecture
      • Ziyang Co.
Pingyi Wan (2002): China's Manganese Industry 20(3), 1-6
    • Hanzhong Prefecture
      • Xixiang Co.
Pingyi Wan (2002): China's Manganese Industry 20(3), 1-6
      • Zhenba Co.
Pingyi Wan (2002): China's Manganese Industry 20(3), 1-6
  • Sichuan Province
    • Dazhou Prefecture
      • Wanyuan Co.
Pingyi Wan (2002): China's Manganese Industry 20(3), 1-6
Pingyi Wan (2002): China's Manganese Industry 20(3), 1-6
France
 
  • Midi-Pyrénées
    • Hautes-Pyrénées
Le Règne Minéral 47: 5-21
Indonesia
 
  • Jawa Island (Java Island)
    • Banten Province
      • Cikotok Gold District
CanMin 38: 1125-1136 (2000)
Italy
 
  • Liguria
    • Genova Province
      • Ne
        • Graveglia Valley
Sanero E. (1936); Ricerche chimiche sulla tinzenite e parsettensite della miniera di Cassagna (Liguria). Periodico di Mineralogia - Roma pp. 123-132.
Cortesogno, L., G. Lucchetti, and AM Penco (1979) Le mineralizzazioni a manganese nei diaspri delle ofioliti liguri: mineralogia e genesi. - Rend. Soc. it. min e Petrol., n. 35, pp. 151-197
          • Reppia
Rivista Mineralogica Italiana, (4), 131
    • La Spezia Province
      • Rocchetta Vara
Dr. Uwe Kolitsch, personal communication 03-12-2007 (EDS+XRD)
  • Piedmont
    • Cuneo Province
      • Varaita Valley
        • Pontechianale
Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
    • Torino Province
      • Chisone Valley
        • Pragelato
Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
      • Susa Valley
        • Cesana Torinese
Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
Japan
 
  • Honshu Island
    • Kanto Region
      • Saitama Prefecture
        • Hidaka
Collection of NHM, Vienna
    • Kinki Region
      • Shiga Prefecture
        • Takashima City
Masutomi Museum specimen (Kyoto); Yamada, S. (2004) Nihonsan-koubutsu Gojuon-hairetsu Sanchi-ichiranhyou (111 pp.)
    • Tohoku Region
      • Iwate Prefecture
        • Noda
Watanabe, T. (1959) Mineralogical Journal, 2, 6, 408-421
  • Shikoku Island
    • Kochi Prefecture
      • Nagaoka-gun
Alfredo Petrov collection
New Zealand
 
  • South Island
    • Otago
Sameshima T, Kawachi Y (1991) Coombsite, Mn analogue of zussmanite, and associated Mn-silicates, parsettensite and caryopilite, from southeast Otago, New Zealand, New Zealand Journal of Geology and Geophysics, 34, 329-335
Russia
 
  • Urals Region
    • Southern Urals
      • Bashkortostan Republic (Bashkiria Republic)
        • Sibay
Brusnitsyn, A.I. (2006): Geology of Ore Deposits 48(3), 193-214.
        • Uchaly
Brusnitsyn, A. I.; Starikova, E. V.; Krivovichev, S. V.; Chukanov, N. V. (1999): Ba-bearing parsettensite from Kyzil-Tash Mn ore deposit (the South Urals). Zapiski Vserossiiskogo Mineralogicheskogo Obshchestva 128, 79-90 (in Russian).
South Africa
 
  • Northern Cape Province
    • Kalahari manganese field
      • Hotazel
Von Bezing, K. L. et al. (1991) The Kalahari manganese field: An Update, Mineralogical Record 22(4) 279-302;
Switzerland
 
  • Grischun (Grisons; Graubünden)
    • Albula Valley
      • Oberhalbstein (Surses; Sursass)
        • Mulegns
- Geiger T. (1948): Manganerze in den Radiolariten Graubündens. Beiträge zur Geologie der Schweiz, Lieferung 27, 89 p.
        • Tinizong (Tinzen)
- Geiger T. (1948): Manganerze in den Radiolariten Graubündens. Beiträge zur Geologie der Schweiz, Lieferung 27, 89 p.
[MinRec 32:211]
Schweiz.Min.Petr.Mitt.(1923) 3, 227-237
    • Engadin
      • Piz Corvatsch
Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 298.
    • Hinterrhein Valley
      • Ferrera Valley
        • Ausserferrera
Amer.Min.(1996) 81, 1270-1276
      • Rheinwald
        • Splügen
Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 298.; Roth, P. & Meisser, N. (2011): I minerali dell'Alpe Tanatz. Passo dello Spluga (Grigioni, Svizzera). Rivista Mineralogica Italiana, 2/2011, 90-99
    • Schanfig Valley
      • Arosa
- Geiger T. (1948): Manganerze in den Radiolariten Graubündens. Beiträge zur Geologie der Schweiz, Lieferung 27, 89 p.
      • Langwies
        • Fondei Valley
Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 298.; Geiger T. (1948): Manganerze in den Radiolariten Graubündens. Beiträge zur Geologie der Schweiz, Lieferung 27, 89 p.; Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Verlag Wepf & Co. (Basel), p. 31
- Geiger T. (1948): Manganerze in den Radiolariten Graubündens. Beiträge zur Geologie der Schweiz, Lieferung 27, 89 p.
Roth, P. & Meisser, N. (2013): Die seltenen Mineralien der Bündner Manganvorkommen. Schweizer Strahler 47 (3), 8-21 (in German and French).
USA
 
  • California
    • Sierra Co.
      • Sierra Buttes
Mike Scott S105697 from Cureton FWZ ID A Roberts
    • Sonoma Co.
      • Coast Range
        • Russian River District
Wood, R. W. (1979) The iron-rich blueschist facies minerals: 2. Howieite. Mineralogical Magazine 43:363-370.
    • Stanislaus Co.
      • Diablo Range
        • Ladd-Buckeye District
          • Mount Oso
Huebner, J. Stephen; Flohr, Marta J. (1990) Microbanded manganese formations; protoliths in the Franciscan Complex, California; USGS Professional Paper 1502.
  • North Carolina
    • Cleveland Co.
      • Kings Mountain District
Mineralogical Record (1994) 25:131
Mineral and/or Locality  
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