| Claraite Mineral Data |
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- 16b.4.3.1 Claraite (Cu,Zn)3(CO3)(OH)4·4(H2O) P1 or P1 Tri
- V/E.07-10 Callaghanite Cu2Mg2(CO3)(OH)6·2(H2O) C 2/c 2/m
- V/E.07-20 Claraite (Cu,Zn)3(CO3)(OH)4·4(H2O) P1 or P1 Tri
- V/E.07-30 Decrespignyite-(Y)! (Y,REE)4Cu(CO3)4Cl(OH)5·2(H2O) P 2, Pm or P 2/m Mono
General Claraite Information |
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 Chemical Formula: |
(Cu,Zn)3(CO3)(OH)4·4(H2O) | ||
| Composition: |
Molecular Weight = 392.58 gm | ||
| Zinc 16.66 % Zn 20.73 % ZnO | |||
| Copper 32.37 % Cu 40.52 % CuO | |||
| Hydrogen 3.08 % H 27.53 % H2O | |||
| Carbon 3.06 % C 11.21 % CO2 | |||
| Oxygen 44.83 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Cu2Zn(CO3)(OH)4·4(H2O) | ||
| Environment: |
Secondary mineral. | ||
| IMA Status: |
Approved IMA 1982 | ||
| Locality: |
Clara Mine, Black Forest, Wolfach, Schwarzwald, Baden-Württemberg, Germany. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for the locality. | ||
Claraite Image | |||
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Images:
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Claraite Crystallography |
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| Axial Ratios: |
a:b:c =1.7783:1:0.9053 | ||
| Cell Dimensions: |
a = 14.28, b = 8.03, c = 7.27, Z = 4; alpha = 79.16°, beta = 107.9°, gamma = 99.68° V = 768.04 Den(Calc)= 3.39 | ||
| Crystal System: |
TriclinicSpace Group: P1 or P1 | ||
| X Ray Diffraction: |
By Intensity(I/Io): 13.47(1)(100), 7.84(0.9)(010), 3.65(0.8)(120,021),2.96(0.6)(410,211,4115.17(0.6)(2 | ||
Physical Properties of Claraite |
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| Cleavage: |
[1010] Perfect | ||
| Color: |
Blue. | ||
| Density: |
3.35 | ||
| Diaphaniety: |
Transparent | ||
| Habit: |
Aggregates - Made of numerous individual crystals or clusters. | ||
| Habit: |
Fibrous - Crystals made up of fibers. | ||
| Habit: |
Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite) | ||
| Hardness: |
2 - Gypsum | ||
| Luster: |
Vitreous (Glassy) | ||
Optical Properties of Claraite |
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| Dichroism (e): |
colorless or colorless. | ||
| Dichroism (w): |
pale green or bluish green. | ||
| Gladstone-Dale: |
CI meas= 0.048 (Good) - where the CI = (1-KPDmeas/KC) CI calc= 0.059 (Fair) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2059,KPDmeas= 0.2084,KC= 0.2189 |
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| Optical Data: |
Uniaxial (-), e=1.645, w=1.751, bire=0.1060. | ||
Calculated Properties of Claraite |
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| Electron Density: |
relectron=3.31 gm/cc |
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| Fermion Index |
Fermion Index = 0.00738 Boson Index = 0.99262 |
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| Photoelectric: |
PEClaraite = 21.99 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Claraite is Not Radioactive |
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Claraite Classification |
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| Dana Class: |
16b.4.3.1 (16b)Carbonates - Hydroxyl or Halogen | ||
| (16b.4)where (A)m (B)n (XO3)p Zq · x(H2O), with (m+n):p=8:1 | |||
| (16b.4.3)Dana Group | |||
| Strunz Class: |
V/E.07-20 V - Nitrates, Carbonates and Borates | ||
| V/E - Water-bearing carbonates with unfamiliar anions | |||
| V/E.07 - Claraite series | |||
Other Claraite Information |
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| References: |
NAME( Dana8) PHYS. PROP.(AmMin, Vol 88, p 254) OPTIC PROP.(Dana8) | ||
| See Also: |
Links to other databases for Claraite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris Search for Claraite using: Visit our Advertisers for Claraite : Translate Claraite Mineral Data : Ask about Claraite here : Print or Cut-and-Paste your Claraite Specimen Label here :
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