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Cuprorivaite

A valid IMA mineral species - grandfathered

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Photos of Cuprorivaite (20)

Cuprorivaite Gallery Search Photos of Cuprorivaite

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Cuprorivaite

Nickenicher Weinberg, Nickenich, Pellenz, Mayen-Koblenz, Rhineland-Palatinate, Germany

Cuprorivaite

Summit Rock, Klamath County, Oregon, USA

Cuprorivaite

Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany

Cuprorivaite

Nickenicher Weinberg, Nickenich, Pellenz, Mayen-Koblenz, Rhineland-Palatinate, Germany

Cuprorivaite

Summit Rock, Klamath County, Oregon, USA

Cuprorivaite

Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany

Cuprorivaite

Nickenicher Weinberg, Nickenich, Pellenz, Mayen-Koblenz, Rhineland-Palatinate, Germany

Cuprorivaite

Summit Rock, Klamath County, Oregon, USA

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About CuprorivaiteHide

Formula:

CaCuSi₄O₁₀

Colour:

Blue

Lustre:

Vitreous

Hardness:

Specific Gravity:

3.08

Crystal System:

Tetragonal

Member of:

Gillespite Group

Name:

For a high copper content and presumed similarity to rivaite

Type Locality:

ⓘ Mount Vesuvius, Somma-Vesuvius Complex, Naples, Campania, Italy

This page provides mineralogical data about Cuprorivaite.

Unique IdentifiersHide

Mindat ID:

1189

Long-form identifier:

mindat:1:1:1189:7

GUID
(UUID V4):

12a081c8-5484-45b8-bf0e-e81166f17d18

IMA Classification of CuprorivaiteHide

IMA status:

Approved, 'Grandfathered' (first described prior to 1959)

First published:

1938

Classification of CuprorivaiteHide

Strunz-mindat (2024):

9.EA.05

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

Dana 8th ed.:

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

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Symbol	Source	Reference
Cuv	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of CuprorivaiteHide

Lustre:

Vitreous

Transparency:

Transparent, Translucent

Colour:

Blue

Hardness:

5 on Mohs scale

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:

n_ω = 1.633 n_ε = 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

Chemistry of CuprorivaiteHide

Mindat Formula:

CaCuSi₄O₁₀

Elements listed:

Ca, Cu, O, Si - search for minerals with similar chemistry

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 Å³ (Calculated from Unit Cell)

Morphology:

Tabular {001}

Crystal StructureHide

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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0013768	Cuprorivaite	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		1993	synthetic	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Cuprorivaite'
loop_
_publ_author_name
'Chakoumakos B C'
'Fernandez-Baca J A'
'Boatner L A'
_journal_name_full 'Journal of Solid State Chemistry'
_journal_volume 103 
_journal_year 1993
_journal_page_first 105
_journal_page_last 113
_publ_section_title
;
 Refinement of the structures of the layer silicates MCuSi4O10 (M=Ca,Sr,Ba)
 by Rietveld analysis of neutron powder diffraction data
 Note: gillespite structure
;
_database_code_amcsd 0013768
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Ca Cu Si4 O10'
_cell_length_a 7.3017
_cell_length_b 7.3017
_cell_length_c 15.1303
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 806.669
_exptl_crystal_density_diffrn      3.096
_symmetry_space_group_name_H-M 'P 4/n c c'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2-y,1/2-x,1/2+z'
  '1/2+y,1/2+x,1/2-z'
  '1/2+y,-x,-z'
  '1/2-y,x,z'
  'x,1/2-y,1/2+z'
  '-x,1/2+y,1/2-z'
  '1/2+x,1/2+y,-z'
  '1/2-x,1/2-y,z'
  'y,x,1/2+z'
  '-y,-x,1/2-z'
  '-y,1/2+x,-z'
  'y,1/2-x,z'
  '1/2-x,y,1/2+z'
  '1/2+x,-y,1/2-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Ca   0.25000   0.75000   0.00000   0.00900
Cu   0.25000   0.25000   0.08190   0.00500
Si   0.50360   0.92670   0.14750   0.00500
O1   0.46080   0.96080   0.25000   0.01900
O2   0.70760   0.00250   0.12680   0.01000
O3   0.35330   0.00680   0.08210   0.00900
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
Ca 0.00300 0.00300 0.02300 0.00000 0.00000 0.00000
Cu 0.00550 0.00550 0.00600 0.00000 0.00000 0.00000
Si 0.00400 0.00500 0.00600 -0.00020 -0.00100 0.00020
O1 0.02800 0.02800 0.00100 -0.00400 0.00440 -0.00440
O2 0.00020 0.01270 0.01700 -0.00190 0.00160 0.00430
O3 0.00590 0.00580 0.01500 0.00310 -0.00400 0.00000

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
3.29 Å	(100)
3.78 Å	(90)
3.00 Å	(90)
3.36 Å	(80)
3.19 Å	(50)
2.270 Å	(50)
7.63 Å	(40)
3.05 Å	(40)
2.629 Å	(40)
2.585 Å	(40)
2.321 Å	(30)

Comments:

Synthetic. Data from Pabst (1959).

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 3a: Earth’s earliest Hadean crust	>4.50
9 : Lava/xenolith minerals (hornfels, sanidinite facies)
High-𝑇 alteration and/or metamorphism
31 : Thermally altered carbonate, phosphate, and iron formations
Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere	<0.6
51 : Pyrometamorphic minerals (see also #54 and #56)	<0.36

Type Occurrence of CuprorivaiteHide

Type Locality:

ⓘ Mount Vesuvius, Somma-Vesuvius Complex, Naples, Campania, Italy

General Appearance of Type Material:

Aggregates of small grains.

Place of Conservation of Type Material:

National Museum of Natural History, Washington, D.C., USA, 135505.

Associated Minerals at Type Locality:

Quartz

Synonyms of CuprorivaiteHide

Egyptian Blue

Other Language Names for CuprorivaiteHide

German:Ägyptischblau
Ägyptisch Blau
Frittenblau
Kupferfritte
Pompeijanisch Blau

Russian:Купрориваит

Relationship of Cuprorivaite to other SpeciesHide

Member of:

Gillespite Group

Other Members of this group:

Effenbergerite	BaCuSi₄O₁₀	Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
Gillespite	BaFe²⁺Si₄O₁₀	Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
Wesselsite	SrCuSi₄O₁₀	Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc

Common AssociatesHide

Associated Minerals Based on Photo Data:

7 photos of Cuprorivaite associated with Hematite	Fe₂O₃
7 photos of Cuprorivaite associated with Ajoite	(K,Na)Cu₇AlSi₉O₂₄(OH)₆ · 3H₂O
7 photos of Cuprorivaite associated with Papagoite	CaCu[H₃AlSi₂O₉]
7 photos of Cuprorivaite associated with Quartz	SiO₂
2 photos of Cuprorivaite associated with Diopside	CaMgSi₂O₆
2 photos of Cuprorivaite associated with Gismondine-Ca	CaAl₂Si₂O₈ · 4H₂O
1 photo of Cuprorivaite associated with Aegirine	NaFe³⁺Si₂O₆
1 photo of Cuprorivaite associated with Wollastonite	Ca₃(Si₃O₉)
1 photo of Cuprorivaite associated with Liebauite	Ca₃Cu₅Si₉O₂₆
1 photo of Cuprorivaite associated with Pseudobrookite	Fe₂TiO₅

Related Minerals - Strunz-mindat Grouping Hide

9.EA.	Bussyite-(Y)	(Y,REE,Ca)₃(Na,Ca)₆MnSi₉Be₅(O,OH,F)₃₄	Mon. 2 : B2
9.EA.	Fluorapophyllite-(NH₄)	NH₄Ca₄(Si₈O₂₀)F · 8H₂O	Tet. 4/mmm (4/m 2/m 2/m) : P4/mnc
9.EA.	Hydroxymcglassonite-(K)	KSr₄Si₈O₂₀(OH) · 8H₂O	Tet.
9.EA.05	Gillespite	BaFe²⁺Si₄O₁₀	Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
9.EA.05	Effenbergerite	BaCuSi₄O₁₀	Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
9.EA.05	Wesselsite	SrCuSi₄O₁₀	Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
9.EA.07	Fluorapophyllite-(Cs)	CsCa₄(Si₈O₂₀)F · 8H₂O	Tet.
9.EA.10	Ekanite	Ca₂ThSi₈O₂₀	Tet. 4 2 2 : I4 2 2
9.EA.15	Fluorapophyllite-(K)	KCa₄(Si₈O₂₀)(F,OH) · 8H₂O	Tet. 4/mmm (4/m 2/m 2/m) : P4/mnc
9.EA.15	Hydroxyapophyllite-(K)	KCa₄(Si₈O₂₀)(OH,F) · 8H₂O	Tet. 4/mmm (4/m 2/m 2/m)
9.EA.15	Fluorapophyllite-(Na)	NaCa₄(Si₈O₂₀)F · 8H₂O	Orth.
9.EA.20	Magadiite	Na₂Si₁₄O₂₉ · 11H₂O	Orth. mm2 : Fdd2
9.EA.25	Dalyite	K₂ZrSi₆O₁₅	Tric. 1 : P1
9.EA.25	Davanite	K₂TiSi₆O₁₅	Tric.
9.EA.30	Sazhinite-(Ce)	Na₂CeSi₆O₁₄ · 6H₂O	Orth. mm2 : Pmm2
9.EA.30	Sazhinite-(La)	Na₃La[Si₆O₁₅] · 2H₂O	Orth. mm2 : Pmm2
9.EA.35	Armstrongite	CaZr[Si₆O₁₅] · 3H₂O	Mon. 2/m : B2/m
9.EA.40	Okenite	Ca₁₀Si₁₈O₄₆ · 18H₂O	Tric. 1 : P1
9.EA.45	Nekoite	Ca₃Si₆O₁₅ · 7H₂O	Tric. 1 : P1
9.EA.45	Perettiite-(Y)	Y₂Mn₄FeSi₂B₈O₂₄	Orth. mmm (2/m 2/m 2/m) : Pmna
9.EA.45	Badakhshanite-(Y)	Y₂Mn₄Al(Si₂B₇BeO₂₄)	Orth. mmm (2/m 2/m 2/m) : Pnma
9.EA.47	Shlykovite	KCa[Si₄O₉(OH)] · 3H₂O	Mon. 2/m : P2₁/b
9.EA.50	Cavansite	Ca(VO)Si₄O₁₀ · 4H₂O	Orth. mmm (2/m 2/m 2/m)
9.EA.50	Diegogattaite	Na₂CaCu₂Si₈O₂₀ · H₂O	Mon. 2/m : B2/m
9.EA.52	Yangite	PbMnSi₃O₈ · H₂O	Tric. 1 : P1
9.EA.55	Pentagonite	Ca(VO)Si₄O₁₀ · 4H₂O	Orth. mm2
9.EA.60	Penkvilksite	Na₄Ti₂Si₈O₂₂ · 4H₂O	Orth. mmm (2/m 2/m 2/m) : Pbcn
9.EA.60	Tumchaite	Na₂Zr(Si₄O₁₁) · 2H₂O	Mon. 2/m : P2₁/b
9.EA.65	Nabesite	Na₂BeSi₄O₁₀ · 4H₂O	Orth. 2 2 2 : P2₁ 2₁ 2₁
9.EA.70	Ajoite	(K,Na)Cu₇AlSi₉O₂₄(OH)₆ · 3H₂O	Tric.
9.EA.75	Zeravshanite	Na₂Cs₄Zr₃[Si₁₈O₄₅]*2H₂O	Mon. 2/m : B2/b
9.EA.80	Bussyite-(Ce)	(Ce,REE)₃(Na,H₂O)₆MnSi₉Be₅(O,OH)₃₀F₄	Mon. 2/m : B2/b
9.EA.85	Plumbophyllite	Pb₂Si₄O₁₀ · H₂O	Orth. 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.

Internet Links for CuprorivaiteHide

mindat.org URL:

https://www.mindat.org/min-1189.html
Please feel free to link to this page.

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External Links:

Look for Cuprorivaite on Webmineral

Look for Cuprorivaite on Wikipedia

Look for Cuprorivaite on Mineralien Atlas

Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

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References for CuprorivaiteHide

Reference List:

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

Foshag, W.F. (1939) New mineral names. American Mineralogist, 24, 350-350.

Pabst, A. (1959) Structures of some tetragonal sheet silicates. Acta Crystographica, 12, 733-739.

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.

(2023) Cuprorivaite. Handbook of Mineralogy. Mineralogical Society of America

Localities for CuprorivaiteHide

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 references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.


Germany
Rhineland-Palatinate Mayen-Koblenz Mendig Bell ⓘ Rothenberg Quarry	Schüller (2013)
Pellenz Nickenich ⓘ Nickenicher Sattel	Hentschel (1983)
ⓘ Nickenicher Weinberg	Hentschel (1983)
Vordereifel Ettringen ⓘ Caspar quarry	Blass
ⓘ Xenolith CS-029	in the collection of Christof Schäfer
Vulkaneifel Daun Üdersdorf ⓘ Emmelberg	Eddy van der Meersche handed the ...

Italy (TL)
Campania Naples Somma-Vesuvius Complex ⓘ Mount Vesuvius (TL)	American Mineralogist 47:409-411 +1 other reference

Middle East
ⓘ Hatrurim Formation	Vapnik et al. (2014)

South Africa
Limpopo Vhembe District Municipality Musina Local Municipality ⓘ Musina	Cairncross et al. (2022)

USA
Arizona Pima County Ajo Mining District Little Ajo Mountains ⓘ Ajo	American Mineralogist 47:409-411
Oregon Klamath County ⓘ Summit Rock	Micro Probe Vol. 10 No. 6

Cuprorivaite

About CuprorivaiteHide

Unique IdentifiersHide

IMA Classification of CuprorivaiteHide

Classification of CuprorivaiteHide

Mineral SymbolsHide

Physical Properties of CuprorivaiteHide

Optical Data of CuprorivaiteHide

Chemistry of CuprorivaiteHide

Crystallography of CuprorivaiteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of CuprorivaiteHide

Synonyms of CuprorivaiteHide

Other Language Names for CuprorivaiteHide

Relationship of Cuprorivaite to other SpeciesHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Other InformationHide

Internet Links for CuprorivaiteHide

References for CuprorivaiteHide

Localities for CuprorivaiteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide