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Cuprorivaite

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Formula:
CaCu[Si
 
4
O
 
10
]
System:TetragonalColour:Blue
Hardness:5
This page provides mineralogical data about Cuprorivaite.

Classification of Cuprorivaite

IMA status:Approved
Strunz 8th edition ID:8/H.02-10
Nickel-Strunz 10th (pending) edition ID:9.EA.05

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

71 : PHYLLOSILICATES Sheets of Six-Membered Rings
2 : Sheets of 6-membered rings with 2:1 layers
Hey's CIM Ref.:14.2.8

14 : Silicates not Containing Aluminum
2 : Silicates of Cu
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Type Occurrence of Cuprorivaite

Type Locality:Mt Vesuvius, Somma-Vesuvius Complex, Naples Province, Campania, Italy
Year of Discovery:1938

Physical Properties of Cuprorivaite

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

Crystallography of Cuprorivaite

Crystal System:Tetragonal
Class (H-M):4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:P4/ncc {P4/n 21/c 2/c}
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
Maximum Birefringence:δ = 0.043

Chart 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[Si
 
4
O
 
10
]
Simplified for copy/paste:CaCu[Si4O10]
Essential elements:Ca, Cu, O, Si
All elements listed in formula:Ca, Cu, O, Si
Common Impurities:Al,Fe,Na,K,S

Relationship of Cuprorivaite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.EA.05Gillespite
BaFe
2+
 
[Si
 
4
O
 
10
]
9.EA.05Effenbergerite
BaCu[Si
 
4
O
 
10
]
9.EA.05Wesselsite
SrCu[Si
 
4
O
 
10
]
9.EA.10Ekanite
(Ca,Fe
2+
 
,Pb)
 
2
(Th,U)[Si
 
8
O
 
20
]
9.EA.15Fluorapophyllite-(K)
KCa
 
4
(Si
 
8
O
 
20
)(F,OH) · 8H
 
2
O
9.EA.15Hydroxyapophyllite-(K)
KCa
 
4
(Si
 
8
O
 
20
)(OH,F) · 8H
 
2
O
9.EA.15Fluorapophyllite-(Na)
NaCa
 
4
(Si
 
8
O
 
20
)F · 8H
 
2
O
9.EA.20Magadiite
NaSi
 
7
O
 
13
(OH)
 
3
· 3H
 
2
O
9.EA.25Dalyite
K
 
2
ZrSi
 
6
O
 
15
9.EA.25Davanite
K
 
2
TiSi
 
6
O
 
15
9.EA.30Sazhinite-(Ce)
Na
 
3
Ce[Si
 
6
O
 
15
] · 6H
 
2
O
9.EA.30Sazhinite-(La)
Na
 
3
La[Si
 
6
O
 
15
] · 2H
 
2
O
9.EA.35Armstrongite
CaZr[Si
 
6
O
 
15
] · 3H
 
2
O
9.EA.40Okenite
CaSi
 
2
O
 
5
· 2H
 
2
O
9.EA.45Nekoite
Ca
 
3
Si
 
6
O
 
15
·7H
 
2
O
9.EA.50Cavansite
Ca(VO)Si
 
4
O
 
10
· 4H
 
2
O
9.EA.55Pentagonite
Ca(VO)Si
 
4
O
 
10
· 4H
 
2
O
9.EA.60Penkvilksite
Na
 
4
Ti
 
2
Si
 
8
O
 
22
· 4H
 
2
O
9.EA.60Tumchaite
Na
 
2
Zr(Si
 
4
O
 
11
) · 2H
 
2
O
9.EA.65Nabesite
Na
 
2
BeSi
 
4
O
 
10
· 4H
 
2
O
9.EA.70Ajoite
(K,Na)Cu
 
7
AlSi
 
9
O
 
24
(OH)
 
6
· 3H
 
2
O
9.EA.75Zeravshanite
Na
 
2
Cs
 
4
Zr
 
3
[Si
 
18
O
 
45
]*2H
 
2
O
9.EA.80Bussyite-(Ce)
(Ce,REE)
 
3
(Na,H
 
2
O)
 
6
MnSi
 
9
Be
 
5
(O,OH)
 
30
F
 
4
9.EA.85Plumbophyllite
Pb
 
2
Si
 
4
O
 
10
· H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
14.2.1Dioptase
CuSiO
 
3
· H
 
2
O
14.2.2Shattuckite
Cu
 
5
(Si
 
2
O
 
6
)
 
2
(OH)
 
2
14.2.3Plancheite
Cu
 
8
(Si
 
8
O
 
22
)(OH)
 
4
· H
 
2
O
14.2.4Gilalite
Cu
 
5
Si
 
6
O
 
17
· 7H
 
2
O
14.2.5Chrysocolla
Cu
 
2-x
Al
 
x
(H
 
2-x
Si
 
2
O
 
5
)(OH)
 
4
· nH
 
2
O (x < 1)
14.2.6Litidionite
CuNaKSi
 
4
O
 
10
14.2.7Reinhardbraunsite
Ca
 
5
(SiO
 
4
)
 
2
(OH,F)
 
2
14.2.9Kinoite
Ca
 
2
Cu
 
2
(H
 
2
O)
 
2
[Si
 
3
O
 
10
]
14.2.10Stringhamite
CaCu(SiO
 
4
) · H
 
2
O
14.2.11Apachite
Cu
 
9
Si
 
10
O
 
29
· 11H
 
2
O

Other Names for Cuprorivaite

Synonyms:
Egyptian Blue
Other Languages:
Russian:Купрориваит

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 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

Search Engines:
  • Look for Cuprorivaite on Google
  • Look for Cuprorivaite images on Google
  • External Links:
  • Look for Cuprorivaite on Webmineral
  • Look for Cuprorivaite on Athena Mineralogy
  • Look for Cuprorivaite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Cuprorivaite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
  • Wilensky Fine Minerals
  • Buy from Dave Bunk Minerals
  • Fabre Minerals - search for Cuprorivaite specimens
  • Find Cuprorivaite on www.crystalclassics.co.uk
  • The Arkenstone - Fine Minerals
  • Buy rare minerals from Excalibur Minerals
  • High-end worldwide specimens & outstanding customer service
  • Lapis Mineral Magazin
  • Fine Minerals from Weinrich Minerals, Inc.
  • Fine and rare minerals from mintreasure.com
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Cuprorivaite specimens for sale - minfind.com
  • Jobs:
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  • Localities for Cuprorivaite

    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.
    (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
        • Andernach
          • Eich
    Hentschel, G., Die Mineralien der Eifelvulkane, Weise Verlag München, 1983
          • Nickenich
    Hentschel, G., Die Mineralien der Eifelvulkane, Weise Verlag München, 1983
        • 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
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    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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