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Parsettensite

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Formula:
K
 
1.2
Mn
 
8
(Si,Al)
 
12
O
 
26
(OH)
 
10
System:MonoclinicColour:Yellowish brown to ...
Lustre:Vitreous, Metallic, Sub-MetallicHardness:
Name:Named in 1923 by Johann Jakob after the type locality, Alp Parsettens.
Dimorph of:Zussmanite
Isostructural with:Chalcodite, Chalcodite, Ferristilpnomelane, Stilpnomelane
This page provides mineralogical data about Parsettensite.

Classification of Parsettensite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:8/H.17-50
Nickel-Strunz 10th (pending) edition ID:9.EG.40

9 : SILICATES (Germanates)
E : Phyllosilicates
G : Double nets with 6-membered and larger rings
Dana 8th edition ID: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
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Type Occurrence of Parsettensite

Type Locality:Parsettens Alp, Tinizong (Tinzen), Oberhalbstein (Surses; Sursass), Albula Valley, Grischun (Grisons; Graubünden), Switzerland
Year of Discovery:1923
Geological Setting of type material:metamorphosed manganese deposit

Physical Properties of Parsettensite

Lustre: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 (measured):2.59 g/cm3
Density (calculated):2.76 g/cm3

Crystallography of Parsettensite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:B2/m {B1 1 2/m} {C2/m} {C1 2/m 1}
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
Maximum Birefringence:δ = 0.030

Chart 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:
K
 
1.2
Mn
 
8
(Si,Al)
 
12
O
 
26
(OH)
 
10
Simplified for copy/paste:K1.2Mn8(Si,Al)12O26(OH)10
Essential elements:H, K, Mn, O, Si
All elements listed in formula:Al, H, K, Mn, O, Si
Common Impurities:Ti,B,Fe,V,Mg,Ba,Cl,C,P

Relationship of Parsettensite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.EG.05Cymrite
BaAl
 
2
Si
 
2
(O,OH)
 
8
· H
 
2
O
9.EG.10Naujakasite
(Na,K)
 
6
(Fe
2+
 
,Mn
2+
 
,Ca)(Al,Fe)
 
4
Si
 
8
O
 
26
9.EG.10Manganonaujakasite
Na
 
6
(Mn
2+
 
,Fe
2+
 
)Al
 
4
Si
 
8
O
 
26
9.EG.15Dmisteinbergite
CaAl
 
2
Si
 
2
O
 
8
9.EG.20Kampfite
Ba
 
12
(Si
 
11
Al
 
5
)O
 
31
(CO
 
3
)
 
8
Cl
 
5
9.EG.25Strätlingite
Ca
 
2
Al
 
2
SiO
 
7
· 8H
 
2
O
9.EG.25Vertumnite
Ca
 
4
Al
 
4
Si
 
4
O
 
6
(OH)
 
24
· 3H
 
2
O
9.EG.30Eggletonite
(Na,K,Ca)
 
2
(Mn,Fe)
 
8
(Si,Al)
 
12
O
 
29
(OH)
 
7
· 11H
 
2
O
9.EG.30Ganophyllite
(K,Na,Ca)
 
2
Mn
 
8
(Si,Al)
 
12
(O,OH)
 
32
· 8H
 
2
O
9.EG.30Tamaite
(Ca,K,Ba,Na)
 
3-4
Mn
 
24
(Si,Al)
 
40
(O,OH)
 
112
· 21H
 
2
O
9.EG.35Coombsite
K(Mn,Fe,Mg)
 
13
(Si,Al)
 
18
O
 
42
(OH)
 
14
9.EG.35Zussmanite
K(Fe,Mg,Mn)
 
13
(Si,Al)
 
18
O
 
42
(OH)
 
14
9.EG.40Franklinphilite
(K,Na)
 
4
(Mn,Zn,Mg,Fe)
 
48
(Si,Al)
 
72
(O,OH)
 
216
· 6H
 
2
O
9.EG.40Lennilenapeite
K
 
6-7
(Mg,Mn,Fe,Zn)
 
48
(Si,Al)
 
72
(O,OH)
 
216
· 16H
 
2
O
9.EG.40Stilpnomelane
(K,Ca,Na)(Fe
2+
 
,Mg,Al,Fe
3+
 
)
 
8
(Si,Al)
 
12
(O,OH)
 
36
· nH
 
2
O
9.EG.45Latiumite
(Ca,K)
 
4
(Si,Al)
 
5
O
 
11
(SO
 
4
,CO
 
3
)
9.EG.45Tuscanite
(K(Ca,Na)
 
6
(Si,Al)
 
10
O
 
22
[SO
 
4
,CO
 
3
,(OH)
 
2
] · H
 
2
O
9.EG.50Jagoite
Pb
 
18
Fe
3+
4
[Si
 
4
(Si,Fe
3+
 
)
 
6
][Pb
 
4
Si
 
16
(Si,Fe)
 
4
]O
 
82
Cl
 
6
9.EG.55Wickenburgite
CaPb
 
3
Al
 
2
Si
 
10
O
 
24
(OH)
 
6
9.EG.60Hyttsjöite
Pb
 
18
Ba
 
2
Ca
 
5
Mn
2+
2
Fe
3+
2
Si
 
30
O
 
90
Cl · 6H
 
2
O
9.EG.65Armbrusterite
K
 
5
Na
 
7
Mn
 
15
[(Si
 
9
O
 
22
)
 
4
](OH)
 
10
· 4H
 
2
O
9.EG.70Britvinite
[Pb
 
7
(OH)
 
3
F(BO
 
3
)
 
2
(CO
 
3
)][Mg
 
4.5
(OH)
 
3
(Si
 
5
O
 
14
)]
9.EG.75Bannisterite
Ca
 
0.5
(K,Na)
 
0.5
(Mn,Fe,Zn)
 
10
(Si,Al)
 
16
O
 
38
(OH)
 
8
· 5.5H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
14.17.1Rhodonite
MnSiO
 
3
14.17.2Tephroite
Mn
2+
2
SiO
 
4
14.17.3Braunite
Mn
2+
 
Mn
3+
6
(SiO
 
4
)O
 
8
14.17.4Alleghanyite
Mn
2+
5
(SiO
 
4
)
 
2
(OH)
 
2
14.17.5Ribbeite
(Mn
2+
 
,Mg)
 
5
(SiO
 
4
)
 
2
(OH)
 
2
14.17.6Leucophoenicite
Mn
2+
7
(SiO
 
4
)
 
3
(OH)
 
2
14.17.7Jerrygibbsite
Mn
2+
9
(SiO
 
4
)
 
4
(OH)
 
2
14.17.8Bementite
Mn
 
7
Si
 
6
O
 
15
(OH)
 
8
14.17.10Yofortierite
Mn
 
5
Si
 
8
O
 
20
(OH)
 
2
· 8-9H
 
2
O

Other Names for Parsettensite

Synonyms:
Errite
Other Languages:
German:Parsettensit
Russian:Парсеттенсит
Simplified Chinese:水硅锰石
Spanish:Parsettensita

Other Information

Health Warning: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

Search Engines:
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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Parsettensite details from Handbook of Mineralogy (PDF)
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  • Localities for Parsettensite

    The 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. ? 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)
      • Tohoku Region
        • Iwate Prefecture
          • Noda
    Watanabe, T. (1959) Mineralogical Journal, 2, 6, 408-421
    • Shikoku Island
      • Kochi Prefecture
    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
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