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Cuprorivaite

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Formula:
CaCu[Si4O10]
System:
Tetragonal
Colour:
Blue
Hardness:
5
This page provides mineralogical data about Cuprorivaite.

Classification of Cuprorivaite

Approved
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
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First Recorded Occurrence of Cuprorivaite

Year of Discovery:
1938

Physical Properties of Cuprorivaite

Vitreous
Colour:
Blue
Hardness (Mohs):
5
Tenacity:
Brittle
Cleavage:
Perfect
on {001}
Density:
3.08(60) g/cm3 (Measured)    3.09 g/cm3 (Calculated)

Crystallography of Cuprorivaite

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

Optical Data of Cuprorivaite

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 Cuprorivaite

Formula:
CaCu[Si4O10]
Essential elements:
All elements listed in formula:
Common Impurities:
Al,Fe,Na,K,S

Relationship of Cuprorivaite to other Species

9.EA.05GillespiteBaFe2+[Si4O10]
9.EA.05EffenbergeriteBaCu[Si4O10]
9.EA.05WesselsiteSrCu[Si4O10]
9.EA.10Ekanite(Ca,Fe2+,Pb)2(Th,U)[Si8O20]
9.EA.15Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
9.EA.15Hydroxyapophyllite-(K)KCa4(Si8O20)(OH,F) · 8H2O
9.EA.15Fluorapophyllite-(Na)NaCa4(Si8O20)F · 8H2O
9.EA.20MagadiiteNa2Si14O29 · 11H2O
9.EA.25DalyiteK2ZrSi6O15
9.EA.25DavaniteK2TiSi6O15
9.EA.30Sazhinite-(Ce)Na3Ce[Si6O15] · 6H2O
9.EA.30Sazhinite-(La)Na3La[Si6O15] · 2H2O
9.EA.35ArmstrongiteCaZr[Si6O15] · 3H2O
9.EA.40OkeniteCaSi2O5 · 2H2O
9.EA.45NekoiteCa3Si6O15·7H2O
9.EA.50CavansiteCa(VO)Si4O10 · 4H2O
9.EA.55PentagoniteCa(VO)Si4O10 · 4H2O
9.EA.60PenkvilksiteNa4Ti2Si8O22 · 4H2O
9.EA.60TumchaiteNa2Zr(Si4O11) · 2H2O
9.EA.65NabesiteNa2BeSi4O10 · 4H2O
9.EA.70Ajoite(K,Na)Cu7AlSi9O24(OH)6 · 3H2O
9.EA.75ZeravshaniteNa2Cs4Zr3[Si18O45]*2H2O
9.EA.80Bussyite-(Ce)(Ce,REE)3(Na,H2O)6MnSi9Be5(O,OH)30F4
9.EA.85PlumbophyllitePb2Si4O10 · H2O
14.2.1DioptaseCuSiO3 · H2O
14.2.2ShattuckiteCu5(Si2O6)2(OH)2
14.2.3PlancheiteCu8(Si8O22)(OH)4 · H2O
14.2.4GilaliteCu5Si6O17 · 7H2O
14.2.5ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O (x < 1)
14.2.6LitidioniteCuNaKSi4O10
14.2.7ReinhardbraunsiteCa5(SiO4)2(OH,F)2
14.2.9KinoiteCa2Cu2(H2O)2[Si3O10]
14.2.10StringhamiteCaCu(SiO4) · H2O
14.2.11ApachiteCu9Si10O29 · 11H2O

Other Names for Cuprorivaite

Name in Other Languages:

Other Information

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 Cuprorivaite

Reference List:
American Mineralogist: 47: 409-411.

Minguzzi C. – (1938) Cuprorivaite: un nuovo minerale. Periodico di Mineralogia – Roma pp. 333-345.

Zeitschrift für Kristallographie: 210: 530.

Internet Links for Cuprorivaite

Localities for Cuprorivaite

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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
      • Andernach
        • Eich
Hentschel, G., Die Mineralien der Eifelvulkane, Weise Verlag München, 1983
        • Nickenich
Hentschel, G., Die Mineralien der Eifelvulkane, Weise Verlag München, 1983
      • Daun
        • Üdersdorf
Eddy van der Meersche handed the material over to Gerhardt Hentschel and got it back with the reference Cuprorivaite.
      • Mayen
        • Ettringen
          • Bellerberg volcano
Blass, G., Graf, H.W., Neue Mineralienfunde aus der Vulkaneifel, Mineralien-Welt 12/1, 17-25, 2001
      • Mendig
        • Bell
Schüller, W. (2013): Der Rothenberg bei Bell, Eifel. Lapis 38 (1), 18-26, 39.
Italy
 
  • 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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