Cuprorivaite Mineral Data


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General Cuprorivaite Information

Help on Chemical  Formula: Chemical Formula: CaCuSi4O10
Help on Composition: Composition: Molecular Weight = 375.96 gm
   Calcium  10.66 %  Ca   14.92 % CaO
   Copper   16.90 %  Cu   21.16 % CuO
   Silicon  29.88 %  Si   63.93 % SiO2
   Oxygen   42.56 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaCuSi4O10
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1938
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Synonym: Synonym: ICSD 72612
  PDF 12-512
 

Cuprorivaite Image

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Cuprorivaite

Comments: Pale blue grains of cuprorivaite.
Location: Vesuvius, Campania, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Cuprorivaite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.07123
Help on Cell Dimensions: Cell Dimensions: a = 7.3, c = 15.12, Z = 4; V = 805.74 Den(Calc)= 3.10
Help on Crystal System: Crystal System: Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: P 4/nnc
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.29(1), 3(0.9), 3.78(0.9),
Click Here for Large Cuprorivaite Structure Window Crystal Structure:

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Chakoumakos B C , Fernandez-Baca J A , Boatner L A , Journal of Solid State Chemistry , 103 (1993) p.105-113, Refinement of the structures of the layer silicates MCuSi4O10 (M=Ca,Sr,Ba), by Rietveld analysis of neutron powder diffraction data, Note: gillespite structure, Locality: synthetic

 

Physical Properties of Cuprorivaite

Help on Cleavage: Cleavage: [001] Perfect
Help on Color: Color: Blue.
Help on Density: Density: 3.08
Help on Diaphaniety: Diaphaniety: Transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Hardness: Hardness: 5 - Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: light blue
 

Optical Properties of Cuprorivaite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.009 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.015 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1973,KPDmeas= 0.1985,KC= 0.2003
Help on Optical Data: Optical Data: Uniaxial (-), e=1.59, w=1.633, bire=0.0430.
 

Calculated Properties of Cuprorivaite

Help on Electron Density: Electron Density:

relectron=3.03 gm/cc
note: rCuprorivaite =3.08 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.0143
Boson Index = 0.9857
Help on Photoelectric: Photoelectric:

PECuprorivaite = 9.72 barns/electron
U=PECuprorivaite x relectron= 29.45 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Cuprorivaite is Not Radioactive

 

Cuprorivaite Classification

Help on  Dana Class: Dana Class: 71.2.3.1 (71)Phyllosilicate Sheets of Six-Membered Rings
  (71.2)with 2:1 Layers
  (71.2.3)Cuprorivaite group
 
71.2.3.1 Cuprorivaite CaCuSi4O10 P 4/nnc 4/m 2/m 2/m
 
71.2.3.2 Gillespite BaFeSi4O10 P 4/ncc 4/m 2/m 2/m
 
71.2.3.3 Effenbergerite BaCuSi4O10 P 4/nnc 4/m 2/m 2/m
 
71.2.3.4 Wesselsite! SrCuSi4O10 P 4/ncc 4/m 2/m 2/m
Help on  Strunz Class: Strunz Class: VIII/H.02-10 VIII - Silicates
  VIII/H - Phyllosilicates (layered), Tetragonal or pseudotetragonal layered structures [Si4O10]4- and others
  VIII/H.02 - Davanite - Dalyite series
 
VIII/H.02-10 Cuprorivaite CaCuSi4O10 P 4/nnc 4/m 2/m 2/m
 
VIII/H.02-20 Wesselsite! SrCuSi4O10 P 4/ncc 4/m 2/m 2/m
 
VIII/H.02-30 Effenbergerite BaCuSi4O10 P 4/nnc 4/m 2/m 2/m
 
VIII/H.02-40 Gillespite BaFeSi4O10 P 4/ncc 4/m 2/m 2/m
 
VIII/H.02-50 Sanbornite BaSi2O5 Pmnb 2/m 2/m 2/m
 
VIII/H.02-60 Bigcreekite! BaSi2O5·4(H2O) P nma 2/m 2/m 2/m
 

Other Cuprorivaite Information

Help on References: References: PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Cuprorivaite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (MinSocAm) 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris

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Cuprorivaite

CaCuSi4O10
Dana No: 71.2.3.1 Strunz No: VIII/H.02-10
Locality:

 

Notes:

 

 
   
 
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