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Cuprorivaite

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About CuprorivaiteHide

Formula:
CaCuSi4O10
Colour:
Blue
Lustre:
Vitreous
Hardness:
5
Specific Gravity:
3.08
Crystal System:
Tetragonal
Name:
For a high copper content and presumed similarity to rivaite
This page provides mineralogical data about Cuprorivaite.


Classification of CuprorivaiteHide

Approved, 'Grandfathered' (first described prior to 1959)
9.EA.05

9 : SILICATES (Germanates)
E : Phyllosilicates
A : Single nets of tetrahedra with 4-, 5-, (6-), and 8-membered rings
71.2.3.1

71 : PHYLLOSILICATES Sheets of Six-Membered Rings
2 : Sheets of 6-membered rings with 2:1 layers
14.2.8

14 : Silicates not Containing Aluminum
2 : Silicates of Cu

Physical Properties of CuprorivaiteHide

Vitreous
Transparency:
Transparent, Translucent
Colour:
Blue
Hardness:
Tenacity:
Brittle
Cleavage:
Perfect
on {001}
Density:
3.08(60) g/cm3 (Measured)    3.09 g/cm3 (Calculated)

Optical Data of CuprorivaiteHide

Type:
Uniaxial (-)
RI values:
nω = 1.633 nε = 1.590
Max Birefringence:
δ = 0.043
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Pleochroism:
Visible
Comments:
Blue - O
Pale rose - nearly colorless - E

Chemical Properties of CuprorivaiteHide

Formula:
CaCuSi4O10
Common Impurities:
Al,Fe,Na,K,S

Crystallography of CuprorivaiteHide

Crystal System:
Tetragonal
Class (H-M):
4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:
P4/ncc
Setting:
P4/ncc
Cell Parameters:
a = 7.3 Å, c = 15.12 Å
Ratio:
a:c = 1 : 2.071
Unit Cell V:
805.74 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Tabular {001}

Type Occurrence of CuprorivaiteHide

Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, 135505.
Associated Minerals at Type Locality:

Synonyms of CuprorivaiteHide

Other Language Names for CuprorivaiteHide

Relationship of Cuprorivaite to other SpeciesHide

Other Members of this group:
EffenbergeriteBaCuSi4O10Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
GillespiteBaFe2+Si4O10Tet.
WesselsiteSrCuSi4O10Tet.

Common AssociatesHide

Associated Minerals Based on Photo Data:
Diopside1 photo of Cuprorivaite associated with Diopside on mindat.org.
Aegirine1 photo of Cuprorivaite associated with Aegirine on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.EA.05GillespiteBaFe2+Si4O10Tet.
9.EA.05EffenbergeriteBaCuSi4O10Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
9.EA.05WesselsiteSrCuSi4O10Tet.
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

Related Minerals - Dana Grouping (8th Ed.)Hide

71.2.3.2GillespiteBaFe2+Si4O10Tet.
71.2.3.3EffenbergeriteBaCuSi4O10Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
71.2.3.4ChromphylliteK(Cr,Al)2(AlSi3O10)(OH,F)2Mon. 2/m : B2/b

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.2.1DioptaseCuSiO3 · H2OTrig. 3 : R3
14.2.2ShattuckiteCu5(Si2O6)2(OH)2Orth. mmm (2/m 2/m 2/m)
14.2.3PlancheiteCu8(Si8O22)(OH)4 · H2OOrth. mmm (2/m 2/m 2/m)
14.2.4GilaliteCu5Si6O17 · 7H2OMon.
14.2.5ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2OOrth.
14.2.6LitidioniteCuNaKSi4O10Tric.
14.2.7ReinhardbraunsiteCa5(SiO4)2(OH,F)2Mon. 2/m : P21/b
14.2.9KinoiteCa2Cu2(H2O)2[Si3O10]Mon. 2/m : P21/m
14.2.10StringhamiteCaCu(SiO4) · H2OMon.
14.2.11ApachiteCu9Si10O29 · 11H2OMon.

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 CuprorivaiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Minguzzi C. – (1938) Cuprorivaite: un nuovo minerale. Periodico di Mineralogia – Roma pp. 333-345.
Mazzi F, Pabst A (1962) Reexamination of cuprorivaite. American Mineralogist 47, 409-410
Chakoumakos B C, Fernandez-Baca J A, Boatner L A (1993) Refinement of the structures of the layer silicates MCuSi4O10 (M=Ca, Sr, Ba) by Rietveld analysis of neutron powder diffraction data. Journal of Solid State Chemistry 103, 105-113
Bensch W, Schur M (1995) Crystal structure of calcium copper phyllo-decaoxotetrasilicate, CaCuSi4O10. Zeitschrift für Kristallographie 210, 530-530

Internet Links for CuprorivaiteHide

Localities for CuprorivaiteHide

ⓘ - 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.
Germany
 
  • Rhineland-Palatinate
    • Ahrweiler
      • Mayen
        • Ettringen
          • Bellerberg volcano
Blass, G., Graf, H.W., Neue Mineralienfunde aus der Vulkaneifel, Mineralien-Welt 12/1, 17-25, 2001
    • Mayen-Koblenz
      • Andernach
        • Nickenich
Hentschel, G., Die Mineralien der Eifelvulkane, Weise Verlag München, 1983
Hentschel, G., Die Mineralien der Eifelvulkane, Weise Verlag München, 1983
      • Mendig
        • Bell
Schüller, W. (2013): Der Rothenberg bei Bell, Eifel. Lapis 38 (1), 18-26, 39.
    • Vulkaneifel
      • Daun
        • Üdersdorf
Eddy van der Meersche handed the material over to Gerhardt Hentschel and got it back with the reference Cuprorivaite.
Italy (TL)
 
  • Campania
    • Naples Province
      • Somma-Vesuvius Complex
Russo, M., Punzo, I. (2004): I minerali del Somma-Vesuvio, AMI; American Mineralogist 47:409-411
USA
 
  • Arizona
    • Pima Co.
      • Ajo District
        • Little Ajo Mts
American Mineralogist 47:409-411
  • Oregon
    • Klamath Co.
Micro Probe Vol. 10 No. 6
Mineral and/or Locality  
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