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Parsettensite

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Foote Lithium Co. Mine (Foote Mine), Kings Mountain District, Cleveland Co., North Carolina, USA
© Stephan Wolfsried

Show Parsettensite Photos (10)
Formula:
K
 
1.2
Mn
 
8
(Si,Al)
 
12
O
 
26
(OH)
 
10
System:MonoclinicColour:Yellowish brown to ...
Lustre:Vitreous, Metallic, Sub-MetallicHardness:1½
Name:Named after its type locality.
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):1½
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
Comment:C2/m setting

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
Essential elements:H, 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
Ca[Al
 
2
Si
 
2
O
 
8
]
9.EG.20Kampfite
Ba
 
6
[(Si,Al)O
 
2
]
 
8
(CO
 
3
)
 
2
Cl
 
2
(Cl,H
 
2
O)
 
2
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.40Bannisterite
Ca
 
0.5
(K,Na)
 
0.5
(Mn,Fe,Zn)
 
10
(Si,Al)
 
16
O
 
38
(OH)
 
8
·5.5H
 
2
O
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(Fe
2+
 
,Mg,Fe
3+
 
)
 
8
(Si,Al)
 
12
(O,OH)
 
27
9.EG.45Latiumite
K
 
2
Ca
 
6
(Si,Al)
 
11
O
 
25
(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,Ca)
 
3
FeSi
 
3
O
 
10
(Cl,OH)
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
[(OH)
 
10
|(Si
 
9
O
 
22
)
 
4
] · 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
)]
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
[O
 
8
|SiO
 
4
]
14.17.4Alleghanyite
Mn
2+
5
[(OH)
 
2
|(SiO
 
4
)
 
2
]
14.17.5Ribbeite
(Mn
2+
 
,Mg)
 
5
[(OH)
 
2
|(SiO
 
4
)
 
2
]
14.17.6Leucophoenicite
Mn
2+
7
[(OH)
 
2
|(SiO
 
4
)
 
3
]
14.17.7Jerrygibbsite
Mn
2+
9
[(OH)
 
2
|(SiO
 
4
)
 
4
]
14.17.8Bementite
Mn
 
5
Si
 
4
O
 
10
(OH)
 
6
14.17.10Yofortierite
Mn
 
5
Si
 
8
O
 
20
(OH)
 
2
·8-9H
 
2
O

Other Names for Parsettensite

German names:
Parsettensit
Russian names:
Парсеттенсит
Spanish names:
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:American Mineralogist (1925): 10: 107.

American Mineralogist (1994): 81: 426.

Internet Links for Parsettensite

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

    Hide Locality List
    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.
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    (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.
    France
     
    • Midi-Pyrénées
      • Hautes-Pyrénées
    		 Le Règne Minéral 47: 5-21
    Indonesia
     
    • Java
      • West Java Province
    		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
    Japan
     
    • Honshu Island
      • Kanto Region
        • Saitama Prefecture
          • Hidaka
    		Collection of NHM, Vienna
      • Tohoku Region
        • Iwate Prefecture
    		Watanabe, T. (1959) Mineralogical Journal, 2, 6, 408-421
    • Shikoku Island
      • Kochi Prefecture
        • Outoyo (Ohtoyo)
    		Alfredo Petrov collection
    New Zealand
     
    • South Island
      • Otago
    		No reference listed
    South Africa
     
    • Northern Cape Province
      • Kalahari manganese fields
        • Hotazel
    		[Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
    Switzerland
     
    • Grischun (Grisons; Graubünden)
      • Albula Valley
        • Oberhalbstein (Surses; Sursass)
          • Tinizong (Tinzen)
    		[MinRec 32:211]
    Schweiz.Min.Petr.Mitt.(1923) 3, 227-237
      • Hinterrhein Valley
        • Ferrera Valley
          • Ausserferrera
    		Amer.Min.(1996) 81, 1270-1276
    USA
     
    • North Carolina
      • Cleveland Co.
        • Kings Mountain District
    Mineral and/or Locality
    Google
     
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