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Barysilite

Big Photo

Långban, Filipstad, Värmland, Sweden
© Maurice de Graaf

Show Barysilite Photos (9)
Formula:
Pb
 
8
Mn
2+
 
[Si
 
2
O
 
7
]
 
3
System:TrigonalColour:White
Hardness:3
This page provides mineralogical data about Barysilite.

Classification of Barysilite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:8/C.06-10
Nickel-Strunz 10th (pending) edition ID:9.BC.20

9 : SILICATES (Germanates)
B : Sorosilicates
C : Si2O7 groups, without non-tetrahedral anions; cations in octahedral [6] and greater coordination
Dana 8th edition ID:55.2.3.1

55 : SOROSILICATES Si2O7 Groups,Generally with no Additional Anions
2 : Si2O7 Groups, Generally with no Additional Anions with cations in [6] coordination
Hey's CIM Ref.:14.13.8

14 : Silicates not Containing Aluminum
13 : Silicates of Pb
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Type Occurrence of Barysilite

Type Locality:Harstigen Mine, Pajsberg, Filipstad, Värmland, Sweden
Year of Discovery:1888

Physical Properties of Barysilite

Colour:White
Hardness (Mohs):3

Crystallography of Barysilite

Crystal System:Trigonal
Cell Parameters:a = 9.8Å, c = 38.35Å
Ratio:a:c = 1 : 3.913
Unit Cell Volume:V 3,189.69 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Horizontal Axis: ° to ° Vertical Axis: % Source Data: Filtered Data: Peaks:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Optical Data of Barysilite

Type:Uniaxial (-)
RI values: nω = 2.033 nε = 2.015
Maximum Birefringence:δ = 0.018

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High

Chemical Properties of Barysilite

Formula:
Pb
 
8
Mn
2+
 
[Si
 
2
O
 
7
]
 
3
Essential elements:Mn, O, Pb, Si
All elements listed in formula:Mn, O, Pb, Si
Common Impurities:Al,Fe,Zn,Mg,Ca

Relationship of Barysilite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.BC.05Gittinsite
CaZr[Si
 
2
O
 
7
]
9.BC.05Keiviite-(Y)
(Y,Yb)
 
2
[Si
 
2
O
 
7
]
9.BC.05Keiviite-(Yb)
(Yb,Y)
 
2
[Si
 
2
O
 
7
]
9.BC.05Thortveitite
(Sc,Y)
 
2
[Si
 
2
O
 
7
]
9.BC.05Yttrialite-(Y)
(Y,Th)
 
2
[Si
 
2
O
 
7
]
9.BC.10Keldyshite
(Na,H)
 
2
ZrSi
 
2
O
 
7
9.BC.10Khibinskite
K
 
2
ZrSi
 
2
O
 
7
9.BC.10Parakeldyshite
Na
 
2
ZrSi
 
2
O
 
7
9.BC.15Rankinite
Ca
 
3
Si
 
2
O
 
7
9.BC.25Edgarbaileyite
(Hg-Hg)
 
3
[Si
 
2
O
 
7
]
9.BC.30Kristiansenite
Ca
 
2
ScSn(Si
 
2
O
 
7
)(Si
 
2
O
 
6
OH)
9.BC.35Percleveite-(Ce)
(Ce,La,Nd)
 
2
[Si
 
2
O
 
7
]
Related Minerals - Hey's Index Grouping:

- +
14.13.1Alamosite
Pb
 
12
[Si
 
12
O
 
36
]
14.13.2Plumbotsumite
Pb
 
5
Si
 
4
O
 
8
(OH)
 
10
14.13.3Luddenite
Cu
 
2
Pb
 
2
Si
 
5
O
 
14
·4H
 
2
O
14.13.4Molybdophyllite
Pb
 
2
Mg
 
2
[(OH)
 
2
|Si
 
2
O
 
7
]
14.13.5Margarosanite
Pb(Ca,Mn
2+
 
)
 
2
[Si
 
3
O
 
9
]
14.13.6Ganomalite
Pb
 
9
Ca
 
5
Mn[O|SiO
 
4
|(Si
 
2
O
 
7
)
 
4
]
14.13.7Kentrolite
Pb
 
2
Mn
3+
2
[O
 
2
|Si
 
2
O
 
7
]
14.13.9Melanotekite
Pb
 
2
Fe
3+
2
[O
 
2
|Si
 
2
O
 
7
]
14.13.10Creaseyite
Cu
 
2
Pb
 
2
(Fe,Al)
 
2
Si
 
5
O
 
17
·6H
 
2
O

Other Names for Barysilite

Other Languages:
German:Barysilit
Russian:Барисилит
Spanish:Barysilita

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 Barysilite

Reference List:American Mineralogist (1969): 54: 510-521.

Acta Crystallographica: 20: 357-363.

Kolitsch, U. and Holtstam, D. (2002) Barysilite from Garpenberg Norra, Dalarna, Sweden: occurrence and crystal structure refinement. Mineralogical Magazine: 66: 353-363.

Internet Links for Barysilite

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  • Raman and XRD data at RRUFF project
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  • Barysilite details from Handbook of Mineralogy (PDF)
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    Localities for Barysilite

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