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Cesplumtantite Mineral Data
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General Cesplumtantite Information
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 Chemical Formula: |
(Cs,Na,Ca)2(Pb,Sb+++,Sn)3Ta8O24 |
| Composition: |
Molecular Weight = 2,479.94 gm |
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Cesium 4.82 % Cs 5.11 % Cs2O |
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Sodium 0.56 % Na 0.75 % Na2O |
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Calcium 0.65 % Ca 0.90 % CaO |
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Tantalum 52.53 % Ta 64.15 % Ta2O5 |
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Niobium 2.25 % Nb 3.22 % Nb2O5 |
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Tin 2.87 % Sn 1.63 % SnO / 1.82 % SnO2 |
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Antimony 2.45 % Sb 2.94 % Sb2O3 |
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Lead 18.38 % Pb 19.80 % PbO |
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Oxygen 15.48 % O |
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______ ______ |
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100.00 % 100.32 % = TOTAL OXIDE |
| Empirical Formula: |
Cs0.9Na0.6Ca0.4Pb2.2Sb0.5Sn0.3Ta7.2Nb0.6Sn0.3O24 |
| Environment: |
Veinlets in thoreaulite. |
| IMA Status: |
Approved IMA 1986 |
| Locality: |
Manono, Shaba, Zaire. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the composition (CESium, PLUMium (lead), and TANTalum). |
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Cesplumtantite Image |
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Images:
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Cesplumtantite
Comments: Brownish yellow cesplumtantite aggregate grains.
Location: Manono, Shaba, Congo.
Scale: See Image.
© Rruff Database |
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Cesplumtantite Crystallography
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| Axial Ratios: |
a:c = 1:0.47557 |
| Cell Dimensions: |
a = 13.552, c = 6.445, Z = 2; V = 1,183.67 Den(Calc)= 6.96 |
| Crystal System: |
Tetragonal Space Group: Unk |
| X Ray Diffraction: |
By Intensity(I/Io): 3.054(1), 1.593(0.7), 1.869(0.7), |
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Physical Properties of Cesplumtantite
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| Cleavage: |
None |
| Color: |
Colorless. |
| Diaphaneity: |
Transparent |
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
| Hardness: |
7 - Quartz |
| Luster: |
Adamantine |
| Streak: |
white |
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Optical Properties of Cesplumtantite
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| Optical Data: |
Uniaxial (?). |
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NCalc= 2.06 - from Gladstone-Dale relationship (KC = 0.1521) where Ncalc=Dcalc*KC+1
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| RL Anisotrophism: |
Strong. |
| RL Bireflectance: |
Weak. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Cesplumtantite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 476 nm |
18.20 |
17.10 |
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| 553 nm |
17.30 |
16.50 |
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| 589 nm |
17.10 |
16.50 |
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| 656 nm |
15.60 |
15.30 |
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Calculated Relative Intensity Colors of Cesplumtantite in Air
Relative
Intensity |
0% |
60% |
100% |
120% |
180% |
240% |
300% |
360% |
420% |
480% |
540% |
550% |
| R1 |
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| R2 |
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Calculated Properties of Cesplumtantite
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| Electron Density: |
Bulk Density (Electron Density)=5.85 gm/cc
note: Specific Gravity of Cesplumtantite =6.96 gm/cc.
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| Fermion Index: |
Fermion Index = 0.04
Boson Index = 0.96 |
| Photoelectric: |
PECesplumtantite =1,023.11 barns/electron
U=PECesplumtantite x rElectron Density=5,985.13 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Cesplumtantite is Not Radioactive |
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Cesplumtantite Classification
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| Dana Class: |
08.07.11.01 (08)Multiple Oxides with Nb, Ta, and Ti |
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(08.07)Dana Type |
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(08.07.11)Dana Group |
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08.07.11.01 Cesplumtantite (Cs,Na,Ca)2(Pb,Sb,Sn)3Ta8O24 Unk Tetra |
| Strunz Class: |
04.DM.15 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate |
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04.D - Metal:Oxygen = 1:2 and similar |
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04.DM -With large (� medium-sized) cations; unclassified |
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04.DM.15 Cesplumtantite (Cs,Na,Ca)2(Pb,Sb,Sn)3Ta8O24 Unk Tetra |
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Other Cesplumtantite Information
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| References: |
NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.74,p501,1989) OPTIC PROP.(AntBidBlaNic3) |
| See Also: |
Links to other databases for Cesplumtantite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
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Cesplumtantite
(Cs,Na,Ca)2(Pb,Sb+++,Sn)3Ta8O24
Dana No: 08.07.11.01 Strunz No: 04.DM.15
Locality:
Notes:
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