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Barysilite

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Formula:
Pb
 
8
Mn
2+
 
[Si
 
2
O
 
7
]
 
3
System:TrigonalColour:White
Hardness:3
Name:Named in 1888 by Stens Anders Hjalmar Sjögren and Carl Herman Lundström from the Greek βαρυζ for "heavy" in allusion to its density and λιθοζ for its 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
Simplified for copy/paste:Pb8Mn2+[Si2O7]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
 
8
Mg
 
9
[Si
 
10
O
 
28
(OH)
 
8
|O
 
2
|(CO
 
3
)
 
3
] · H
 
2
O
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
Pb
 
2
Cu
 
2
Fe
3+
2
(Si
 
4.67
Al
 
0.33
)O
 
15.33
(OH)
 
3
· H
 
2
O

Other Names for Barysilite

Synonyms:
Barisilite
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

Search Engines:
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  • External Links:
  • Look for Barysilite on Webmineral
  • Look for Barysilite on Athena Mineralogy
  • Look for Barysilite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Barysilite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
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  • Buy rare minerals from Excalibur Minerals
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Fine and rare minerals from mintreasure.com
  • Buy fine minerals and gemstones from Pala International
  • Barysilite specimens for sale - minfind.com
  • rare and unusual minerals mainly crystallized
  • Find Barysilite on www.crystalclassics.co.uk
  • Buy RARE Minerals from Rocks of Africa
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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.
    (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
        • Clausthal-Zellerfeld
          • Bockswies veins
            • Oberschulenberg
    No reference listed
    Namibia
     
    • Otjozondjupa Region
      • Grootfontein District
        • Kombat
    Dunn, P.J. (1991), Rare minerals of the Kombat Mine, Mineralogical Record: 22(6): 421-425.
    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
    • Västmanland
      • Hällefors
        • Grythyttan
    Ulf Nyberg collection and photo. Specimen number 2653
    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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    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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