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Wesselsite

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About WesselsiteHide

Formula:
SrCuSi4O10
Colour:
Blue
Lustre:
Vitreous
Hardness:
4 - 5
Crystal System:
Tetragonal
Name:
Named after its discovery locality, the Wessels Mine, Cape Province, South Africa.
This page provides mineralogical data about Wesselsite.


Classification of WesselsiteHide

Approved
Approval Year:
1994
9.EA.05

9 : SILICATES (Germanates)
E : Phyllosilicates
A : Single nets of tetrahedra with 4-, 5-, (6-), and 8-membered rings

Physical Properties of WesselsiteHide

Vitreous
Colour:
Blue
Streak:
White to blue
Hardness:
4 - 5 on Mohs scale

Optical Data of WesselsiteHide

Type:
Uniaxial (-)
RI values:
nω = 1.630 nε = 1.590
Max Birefringence:
δ = 0.040
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate

Chemical Properties of WesselsiteHide

Formula:
SrCuSi4O10

Crystallography of WesselsiteHide

Crystal System:
Tetragonal

Type Occurrence of WesselsiteHide

Reference:
Giester, G., & Rieck, B. (1996). Wesselsite, SrCu [Si4O10], a further new gillespite-group mineral from the Kalahari Manganese Field, South Africa. Mineralogical Magazine, 60(5), 795-798.

Synonyms of WesselsiteHide

Other Language Names for WesselsiteHide

Relationship of Wesselsite to other SpeciesHide

Other Members of this group:
CuprorivaiteCaCuSi4O10Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
EffenbergeriteBaCuSi4O10Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
GillespiteBaFe2+Si4O10Tet.

Common AssociatesHide

Associated Minerals Based on Photo Data:
Sugilite18 photos of Wesselsite associated with Sugilite on mindat.org.
Lavinskyite8 photos of Wesselsite associated with Lavinskyite on mindat.org.
Scottyite5 photos of Wesselsite associated with Scottyite on mindat.org.
Effenbergerite3 photos of Wesselsite associated with Effenbergerite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.EA.05CuprorivaiteCaCuSi4O10Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
9.EA.05GillespiteBaFe2+Si4O10Tet.
9.EA.05EffenbergeriteBaCuSi4O10Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
9.EA.10EkaniteCa2ThSi8O20Tet. 4 2 2 : I4 2 2
9.EA.15Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2OTet. 4/mmm (4/m 2/m 2/m) : P4/mnc
9.EA.15Hydroxyapophyllite-(K)KCa4(Si8O20)(OH,F) · 8H2OTet.
9.EA.15Fluorapophyllite-(Na)NaCa4(Si8O20)F · 8H2OOrth.
9.EA.20MagadiiteNa2Si14O29 · 11H2OMon.
9.EA.25DalyiteK2ZrSi6O15Tric.
9.EA.25DavaniteK2TiSi6O15Tric.
9.EA.30Sazhinite-(Ce)Na2CeSi6O14•6H2O
9.EA.30Sazhinite-(La)Na3La[Si6O15] · 2H2OOrth. mm2 : Pmm2
9.EA.35ArmstrongiteCaZr[Si6O15] · 3H2OMon.
9.EA.40OkeniteCa10Si18O46 · 18H2OTric. 1 : P1
9.EA.45NekoiteCa3Si6O15·7H2OTric. 1 : P1
9.EA.50CavansiteCa(VO)Si4O10 · 4H2OOrth. mmm (2/m 2/m 2/m)
9.EA.55PentagoniteCa(VO)Si4O10 · 4H2OOrth. mm2
9.EA.60PenkvilksiteNa4Ti2Si8O22 · 4H2OOrth. mmm (2/m 2/m 2/m) : Pbcn
9.EA.60TumchaiteNa2Zr(Si4O11) · 2H2OMon.
9.EA.65NabesiteNa2BeSi4O10 · 4H2OOrth. 2 2 2 : P21 21 21
9.EA.70Ajoite(K,Na)Cu7AlSi9O24(OH)6 · 3H2OTric.
9.EA.75ZeravshaniteNa2Cs4Zr3[Si18O45]*2H2OMon. 2/m : B2/b
9.EA.80Bussyite-(Ce)(Ce,REE)3(Na,H2O)6MnSi9Be5(O,OH)30F4Mon. 2/m : B2/b
9.EA.85PlumbophyllitePb2Si4O10 · H2OOrth. mmm (2/m 2/m 2/m) : Pbcn

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for WesselsiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Giester, G. and Rieck, B. (1996) Wesselsite, SrCu[Si4O10], a further new gillespite-group mineral from the Kalahari Field, South Africa. Mineralogical Magazine: 60: 795-798.
Mineralogical Record: 28: 145.
Knight, K. S.; Henderson, C. M. B.; Clark, S. M. (2010) Structural variations in the wesselsite-effenbergerite (Sr1xBaxCuSi4O10) solid solution. European Journal of Mineralogy: 22: 411-423.
Rieck B., Pristacz H. and Giester G. (2015) Colinowensite, BaCuSi2O6, a new mineral from the Kalahari Manganese Field, South Africa and new data on wesselsite, SrCuSi4O10. Mineralogical Magazine: 79(7): 1769-1778.

Internet Links for WesselsiteHide

Localities for WesselsiteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
South Africa (TL)
 
  • Northern Cape Province
    • Kalahari manganese field
      • Hotazel
Giester, G., & Rieck, B. (1996). Wesselsite, SrCu [Si4Olo], a further new gillespite-group mineral from the Kalahari Manganese Field, South Africa. Mineralogical Magazine, 60, 795-798.; Rumsey, M. S., Welch, M. D., Kampf, A. R., & Spratt, J. (2013). Diegogattaite, Na2CaCu2Si8O20· H2O: a new nanoporous copper sheet silicate from Wessels Mine, Kalahari Manganese Fields, Republic of South Africa. Mineralogical Magazine, 77(8), 3155-3162.
Mineral and/or Locality  
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