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Roeblingite

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Långban, Filipstad, Värmland, Sweden
© Knut Eldjarn

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Formula:
Pb
 
2
Ca
 
6
Mn
2+
 
(Si
 
3
O
 
9
)
 
2
(SO
 
4
)
 
2
(OH)
 
2
 · 4H
 
2
O
System:MonoclinicColour:White, greyish white
Hardness:3
Name:
After Colonel Washington A. Roebling (1837 – 1926) , builder of the Brooklyn Bridge and avid mineral collector, donated collection to Smithsonian
This page provides mineralogical data about Roeblingite.

Classification of Roeblingite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:8/E.02-30
Nickel-Strunz 10th (pending) edition ID:9.CB.05

9 : SILICATES (Germanates)
C : Cyclosilicates
B : [Si3O9]6- 3-membered single rings, with insular complex anions
Dana 8th edition ID:64.2.2.1

64 : CYCLOSILICATES Rings with Other Anions and Insular Silicate Groups
2 : Rings with Other Anions and Insular Silicate Groups: 3-membered rings with other anion groups
Hey's CIM Ref.:17.10.25

17 : Silicates Containing other Anions
10 : Silicates with sulphate, molybdate or tungstate
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Type Occurrence of Roeblingite

Type Locality:Parker Mine (Parker shaft), Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA
General Appearance of Type Material:Porcelanous
Year of Discovery:1897
Geological Setting of type material:highly altered (metasomatized) zone in a zinc-manganese-iron silicate-oxide orebody
Associated Minerals at type locality:
WillemiteGanophylliteEpidote-(Pb)ClinohedriteBaryte
Andradite

Occurrences of Roeblingite

Geological Setting:Metamorphosed manganese deposits.

Physical Properties of Roeblingite

Lustre:Dull
Diaphaneity (Transparency):Transparent, Opaque
Colour:White, greyish white
Streak:White
Hardness (Mohs):3
Cleavage:Perfect
on {001}
Density (measured):3.433 g/cm3
Density (calculated):3.44 g/cm3

Crystallography of Roeblingite

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 = 13.208Å, b = 8.287Å, c = 13.089Å
β = 106.65°
Ratio:a:b:c = 1.594 : 1 : 1.579
Unit Cell Volume:V 1,372.59 ų (Calculated from Unit Cell)
Z:2
Morphology:As dense, compact masses of tiny lathlike crystals.

Optical Data of Roeblingite

Type:Biaxial (+)
RI values: nα = 1.640 nβ = 1.640 nγ = 1.660
2V:Measured: 61° (2), Calculated: 61°
Maximum Birefringence:δ = 0.020

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:relatively weak r < v

Chemical Properties of Roeblingite

Formula:
Pb
 
2
Ca
 
6
Mn
2+
 
(Si
 
3
O
 
9
)
 
2
(SO
 
4
)
 
2
(OH)
 
2
 · 4H
 
2
O
Essential elements:Ca, H, Mn, O, Pb, S, Si
All elements listed in formula:Ca, H, Mn, O, Pb, S, Si
Common Impurities:Sr,Na,K,C

Relationship of Roeblingite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.CB.10Diversilite-(Ce)
Na
 
2
(Ba,K)
 
6
Fe
2+
 
Ce
 
2
Ti
 
3
(Si
 
3
O
 
9
)
 
3
(HSiO
 
4
)
 
3
(OH,H
 
2
O)
 
9
9.CB.15Ilímaussite-(Ce)
(Na,K)
 
7-8
(Ba,K)
 
10
Ce
 
5
(Nb,Ti)
 
6
(Si
 
3
O
 
9
)
 
4
(Si
 
9
O
 
18
)O
 
6
(O,OH)
 
24
Related Minerals - Hey's Index Grouping:

- +
17.10.1Nosean
Na
 
8
(Al
 
6
Si
 
6
O
 
24
)(SO
 
4
)
17.10.2Pitiglianoite
Na
 
6
K
 
2
(Al
 
6
Si
 
6
O
 
24
)(SO
 
4
) · 2H
 
2
O
17.10.3Vishnevite
(Na,K)
 
8
(Al
 
6
Si
 
6
O
 
24
)(SO
 
4
,CO
 
3
) · 2H
 
2
O
17.10.4Haüyne
(Na,Ca)
 
4-8
(Al
 
6
Si
 
6
(O,S)
 
24
)(SO
 
4
,Cl)
 
1-2
17.10.5Liottite
(Na,K)
 
16
Ca
 
8
(Al
 
6
Si
 
6
O
 
24
)
 
3
(SO
 
4
)
 
5
Cl
 
4
17.10.6Latiumite
K
 
2
Ca
 
6
(Si,Al)
 
11
O
 
25
(SO
 
4
,CO
 
3
)
17.10.7Tuscanite
(K(Ca,Na)
 
6
(Si,Al)
 
10
O
 
22
[SO
 
4
,CO
 
3
,(OH)
 
2
] · H
 
2
O
17.10.8Microsommite
Na
 
4
K
 
2
Ca
 
2
(Al
 
6
Si
 
6
O
 
24
)(SO
 
4
)Cl
 
2
17.10.9Delhayelite
(Na,K)
 
10
Ca
 
5
Al
 
6
Si
 
32
O
 
80
(Cl
 
2
,F
 
2
,SO
 
4
)
 
3
 · 18H
 
2
O
17.10.10Hydrodelhayelite
KCa
 
2
AlSi
 
7
O
 
17
(OH)
 
2
 · 6H
 
2
O
17.10.11Davyne
(Na,K)
 
6
Ca
 
2
(Al
 
6
Si
 
6
O
 
24
)(Cl
 
2
,SO
 
4
)
 
2
17.10.12Afghanite
(Na,Ca,K)
 
8
(Al
 
6
Si
 
6
O
 
24
)(Cl
 
2
,SO
 
4
,CO
 
3
)
 
3
 · 0.5H
 
2
O
17.10.13Franzinite
(Na,K)
 
6
Ca
 
2
(Al
 
6
Si
 
6
O
 
24
)(SO
 
4
)
 
2
 · 0.5H
 
2
O
17.10.14Giuseppettite
(Na,K,Ca)
 
7-8
(Al
 
6
Si
 
6
O
 
24
)(SO
 
4
,Cl)
 
1-2
17.10.15Sacrofanite
(Na,K)
 
98
Ca
 
20
(Al
 
6
Si
 
6
O
 
24
)
 
14
(SO
 
4
)
 
26
Cl
 
2
 · 8H
 
2
O
17.10.16Chessexite
(Na,K)
 
4
Ca
 
2
(Mg,Zn)
 
3
Al
 
8
(SO
 
4
)
 
10
(SiO
 
4
)
 
2
 · 40H
 
2
O
17.10.17Innelite
Na
 
2
CaBa
 
4
Ti
 
3
(Si
 
2
O
 
7
)
 
2
(SO
 
4
)
 
2
O
 
4
17.10.18Thaumasite
Ca
 
3
(SO
 
4
)[Si(OH)
 
6
](CO
 
3
) · 12H
 
2
O
17.10.19Ellestadite
17.10.20Ellestadite-(Cl)
Ca
 
10
(SiO
 
4
)
 
3
(SO
 
4
)
 
3
Cl
 
2
17.10.21Hydroxylellestadite
Ca
 
5
(SiO
 
4
)
 
1.5
(SO
 
4
)
 
1.5
(OH)
17.10.22Fluorellestadite
Ca
 
5
(SiO
 
4
)
 
1.5
(SO
 
4
)
 
1.5
F
17.10.23Mattheddleite
Pb
 
5
(SiO
 
4
)
 
1.5
(SO
 
4
)
 
1.5
(Cl,OH)
17.10.24Queitite
Pb
 
4
Zn
 
2
(SO
 
4
)(SiO
 
4
)(Si
 
2
O
 
7
)
17.10.26Yoshimuraite
Ba
 
2
Mn
 
2
Ti(Si
 
2
O
 
7
)(PO
 
4
)O(OH)
17.10.27Kegelite
Pb
 
8
Al
 
4
(Si
 
8
O
 
20
)(SO
 
4
)
 
2
(CO
 
3
)
 
4
(OH)
 
8
17.10.28Wenkite
(Ba,K)
 
4
(Ca,Na)
 
6
[(SO
 
4
)
 
3
|(Si,Al)
 
20
O
 
39
(OH)
 
2
] · 0.5H
 
2
O
17.10.29Macquartite
Pb
 
3
Cu(CrO
 
4
)(SiO
 
3
)(OH)
 
4
 · 2H
 
2
O
17.10.30Welinite
Mn
2+
6
(W
6+
 
,Mg)
 
2
(SiO
 
4
)
 
2
(O,OH)
 
6

Other Names for Roeblingite

Other Languages:
German:Roeblingit
Russian:Реблингит
Simplified Chinese:硫硅钙铅矿
硫矽钙铅矿
Spanish:Roeblingita

Other Information

Fluorescence in UV light:Dull red (SW UV)
Health Warning:Contains Pb

References for Roeblingite

Reference List:

- +
American Mineralogist (1931): 16: 455.

Palache, C. (1935), USGS PP 180: 113.

Hurlbut, C.S., Jr. & Baum, J.L. (1960): American Mineralogist: 45: 1137-1143.

American Mineralogist (1966): 51: 504-508.

Dunn, P.J. (1983): Mineralogical Record: 14: 203-204.

American Mineralogist (1984): 69: 1173-1179.

Mineralogical Magazine (1985): 49: 756.

Dunn, Pete J. (1995): Franklin and Sterling Hill New Jersey: the world's most magnificent mineral deposits, part 4: 503.

Internet Links for Roeblingite

Search Engines:
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    • External Links:
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  • Look for Roeblingite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Roeblingite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
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    • Localities for Roeblingite

    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.
    Sweden
     
    • 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.
    USA
     
    • New Jersey
      • Sussex Co.
        • Franklin Mining District
          • Franklin
    		Dunn, P.J.: Min.Rec.:14:203-204 (1983); Hurlbut, C.S., Jr. & Baum, J.L.: Am.Min.:45:1137-1143 (1960); Palache(1935):113; Dunn(1995):Pt4:503.
    Palache(1935):113; Dunn(1995):Pt4:503.
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