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Barysilite

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Big Photo

Långban, Filipstad, Värmland, Sweden
© Maurice de Graaf

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Formula:
Pb
 
8
Mn
2+
 
[Si
 
2
O
 
7
]
 
3
System:TrigonalColour:White
Hardness:3
Name:Named from the Greek for "heavy" and in allusion to its composition, containing SILicon.
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, Persberg district, 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:
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
CaZrSi
 
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
 
13
(CO
 
3
)
 
6
(Si
 
10
O
 
27
) · 3H
 
2
O
14.13.3Luddenite
Cu
 
2
Pb
 
2
Si
 
5
O
 
14
 · 4H
 
2
O
14.13.4Molybdophyllite
Pb
 
2
Mg
 
2
Si
 
2
O
 
7
(OH)
 
2
14.13.5Margarosanite
Pb(Ca,Mn
2+
 
)
 
2
(Si
 
3
O
 
9
)
14.13.6Ganomalite
Pb
 
9
Ca
 
5
Mn(Si
 
2
O
 
7
)
 
4
(SiO
 
4
)O
14.13.7Kentrolite
Pb
 
2
Mn
3+
2
(Si
 
2
O
 
7
)O
 
2
14.13.9Melanotekite
Pb
 
2
Fe
3+
2
(Si
 
2
O
 
7
)O
 
2
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
  • American Mineralogist Crystal Structure Database
  • Barysilite details from Handbook of Mineralogy (PDF)
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    • Localities for Barysilite

    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.
    Hide Locality List
    (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.
    Germany
     
    • Lower Saxony
      • Harz Mts
        • Clausthal-Zellerfeld
          • Oberschulenberg
    		No reference listed
    Namibia
     
    • Otjozondjupa Region
      • Grootfontein District
        • Kombat
    		Mineralogical Record: 22: 421.
    Sweden
     
    • Dalarna
      • Hedemora
        • Garpenberg
    		U. Kolitsch and D. Holtstam (2002): Barysilite from Garpenberg Norra, Dalarna, Sweden: occurrence and crystal structure refinement. Mineral. Mag. 66, 353-363.
    • Värmland
      • Filipstad
    		Nysten, P., Holtstam, D. and Jonsson, E. (1999) The Långban minerals. In Långban - The mines,their minerals, geology and explorers (D. Holtstam and J. Langhof, eds.), Swedish Museum of Natural History and Raster Förlag, Stockholm & Chr. Weise Verlag, Munich, pp. 89-183. ; K:Gatedal
        • Nordmark (Nordmarksberg)
    		No reference listed
        • Persberg district
          • Pajsberg
    		Öfvers. KVA handl.(1888) 45, 7-10
    USA
     
    • Nevada
      • Nye Co.
    		NBMG Spec. Pub. 31 Minerals of Nevada
    • New Jersey
      • Sussex Co.
        • Franklin Mining District
          • Franklin
    		Palache(1935):92; Dunn(1995):Pt3:409.
    Palache(1935):92; Dunn(1995):Pt3:409.
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