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Jasmundite

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Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Eifel Mts, Rhineland-Palatinate, Germany
© Stephan Wolfsried

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Formula:
Ca
 
11
(SiO
 
4
)
 
4
O
 
2
S
System:TetragonalHardness:5
Name:Named in honour of Professor Karl Jasmund, retired Director of the Mineralogical-Petrographic Institute, University of Cologne, Cologne, Germany.
This page provides mineralogical data about Jasmundite.

Classification of Jasmundite

IMA status:Approved
Strunz 8th edition ID:8/B.05-10
Nickel-Strunz 10th (pending) edition ID:9.AG.70

9 : SILICATES (Germanates)
A : Nesosilicates
G : Nesosilicates with additional anions; cations in > [6] +- [6] coordination
Dana 8th edition ID:52.4.7.4

52 : NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
4 : Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Hey's CIM Ref.:17.9.2

17 : Silicates Containing other Anions
9 : Silicates with sulphide or sulphite
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Type Occurrence of Jasmundite

Type Locality:Ettringer Feld, Western lava flow, Bellerberg volcano, Ettringen, Mayen, Eifel Mts, Rhineland-Palatinate, Germany
Year of Discovery:1983

Physical Properties of Jasmundite

Hardness (Mohs):5

Crystallography of Jasmundite

Crystal System:Tetragonal
Cell Parameters:a = 10.46Å, c = 8.81Å
Ratio:a:c = 1 : 0.842
Unit Cell Volume:V 963.92 ų (Calculated from Unit Cell)

Optical Data of Jasmundite

Type:Uniaxial (+)
RI values: nω = 1.715 nε = 1.728
Maximum Birefringence:δ = 0.013

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

Chemical Properties of Jasmundite

Formula:
Ca
 
11
(SiO
 
4
)
 
4
O
 
2
S
Essential elements:Ca, O, S, Si
All elements listed in formula:Ca, O, S, Si
Common Impurities:Al,Fe,Mg

Relationship of Jasmundite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.AG.05Abswurmbachite
CuMn
3+
6
(SiO
 
4
)O
 
8
9.AG.05Braunite
Mn
2+
 
Mn
3+
6
(SiO
 
4
)O
 
8
9.AG.05Neltnerite
CaMn
3+
6
(SiO
 
4
)O
 
8
9.AG.05Braunite-II
CaMn
3+
14
(SiO
 
4
)O
 
20
9.AG.10Långbanite
(Mn
2+
 
,Ca)
 
4
(Mn
3+
 
,Fe
3+
 
)
 
9
Sb
5+
 
(SiO
 
4
)
 
2
O
 
16
9.AG.15Malayaite
CaSn(SiO
 
4
)O
9.AG.15Titanite
CaTi(SiO
 
4
)O
9.AG.15Vanadomalayaite
CaV
4+
 
(SiO
 
4
)O
9.AG.20Cerite-(Ce)
(Ce,Ca)
 
9
(Fe,Mg)(SiO
 
4
)
 
3
(HSiO
 
4
)
 
4
(OH)
 
3
9.AG.20Cerite-(La)
(La,Ce,Ca)
 
9
(Fe,Ca,Mg)(SiO
 
4
)
 
3
(HSiO
 
4
)
 
4
(OH)
 
3
9.AG.20Aluminocerite-(Ce)
(Ce,La,Ca)
 
9
(Al,Fe
3+
 
)(SiO
 
4
)
 
3
(HSiO
 
4
)
 
4
(OH)
 
3
9.AG.25Trimounsite-(Y)
Y
 
2
Ti
 
2
(SiO
 
4
)O
 
5
9.AG.25Yftisite-(Y)
(Y,Dy,Er)
 
4
(Ti,Sn)(SiO
 
4
)
 
2
O(F,OH)
 
6
9.AG.30Sitinakite
KNa
 
2
Ti
 
4
(SiO
 
4
)
 
2
O
 
5
(OH) · 4H
 
2
O
9.AG.35Kittatinnyite
Ca
 
2
Mn
 
2
Mn(SiO
 
4
)
 
2
(OH)
 
4
 · 9H
 
2
O
9.AG.40aNatisite
Na
 
2
Ti(SiO
 
4
)O
9.AG.40bParanatisite
Na
 
2
Ti(SiO
 
4
)O
9.AG.45Törnebohmite-(Ce)
(Ce,La)
 
2
Al(SiO
 
4
)
 
2
(OH)
9.AG.45Törnebohmite-(La)
(La,Ce)
 
2
Al(SiO
 
4
)
 
2
(OH)
9.AG.50Kuliokite-(Y)
Y
 
4
Al(SiO
 
4
)
 
2
(OH)
 
2
F
 
5
9.AG.55Chantalite
CaAl
 
2
(SiO
 
4
)(OH)
 
4
9.AG.60Mozartite
CaMn
3+
 
(SiO
 
4
)(OH)
9.AG.60Vuagnatite
CaAl(SiO
 
4
)(OH)
9.AG.65Hatrurite
Ca
 
3
(SiO
 
4
)O
9.AG.75Afwillite
Ca
 
3
(HSiO
 
4
)
 
2
 · 2H
 
2
O
9.AG.80Bultfonteinite
Ca
 
2
(HSiO
 
4
)F · H
 
2
O
9.AG.85Zoltaiite
BaV
4+
2
V
3+
12
(SiO
 
4
)
 
2
O
 
19
9.AG.90Tranquillityite
(Fe
2+
 
,Ca)
 
8
(Zr,Y)
 
2
Ti
 
3
(SiO
 
4
)
 
3
O
 
4
Related Minerals - Hey's Index Grouping:

- +
17.9.1Lazurite
(Na,Ca)
 
8
(Al
 
6
Si
 
6
O
 
24
)(S,SO
 
4
,Cl
 
2
)
17.9.3Genthelvite
Zn
 
4
(Be
 
3
Si
 
3
O
 
12
)S
17.9.4Helvite
Mn
2+
4
(Be
 
3
Si
 
3
O
 
12
)S
17.9.5Danalite
Fe
2+
4
(Be
 
3
Si
 
3
O
 
12
)S

Other Names for Jasmundite

Synonyms:
IMA1981-047
Other Languages:
German:Jasmundit
Russian:Джасмундит
Spanish:Jasmundita

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 Jasmundite

Reference List:

- +
Hentschel, G., Dent Glasser, L.S., Lee, C.K. (1983): Jasmundite, Ca22(SiO4)8O4S2, a new mineral. Neues Jahrbuch für Mineralogie, Monatshefte, 1983, 337-343.

American Mineralogist (1984): 69: 566-567.

Dent Glasser, L. S., Lee, C. K. (1981): The structure of jasmundite, Ca22(SiO4)8O4S2. Acta Crystallographica, 37, 803-806.

Internet Links for Jasmundite

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  • Raman and XRD data at RRUFF project
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    • Localities for Jasmundite

    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
     
    • Rhineland-Palatinate
      • Eifel Mts
        • Mayen
          • Ettringen
            • Bellerberg volcano
    		Hentschel, G. (1987): Die Mineralien der Eifelvulkane, Weise (München), 2. Auflage
              • Southern lava flow
    		Hentschel, G., Dent Glasser, L.S., Lee, C.K. (1983): Jasmundite. Ca22(Si04)8O4S2. a new mineral, N. Jb. Mineral., Mh., 337-342.
    Rüdinger, B.; Tillmanns, E. Hentschel, G. (1993): Bellbergite – a New Mineral with the Zeolite Structure Type EAB, Mineralogy and Petrology 48, 147-152
              • Western lava flow
    		Dent Glasser, L. S., Lee, C. K. (1981): The Structure of Jasmundite, Ca22(Si04)804S2, Acta Cryst., Vol. 37, 803-806
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