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Zenzenite Mineral Data
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General Zenzenite Information
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 Chemical Formula: |
Pb3(Fe+++,Mn+++)4Mn++++3O15 |
| Composition: |
Molecular Weight = 1,222.03 gm |
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Manganese 20.68 % Mn 9.04 % Mn2O3 / 22.77 % MnO2 |
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Iron 10.51 % Fe 15.03 % Fe2O3 |
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Lead 49.17 % Pb 52.97 % PbO |
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Oxygen 19.64 % O |
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______ ______ |
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100.00 % 99.80 % = TOTAL OXIDE |
| Empirical Formula: |
Pb2.9Fe3+2.3Mn3+1.4Mn4+3.2O15 |
| Environment: |
Cabonate-phyllosilicate skarn rock in a metamorphosed Fe-Mn orebody. |
| IMA Status: |
Approved IMA 1991 |
| Locality: |
Langban, Varmland, Sweden. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Nile Zenzen (1883-1959), formerly Senior curator of the Swedish museum of Natural History, Stockholm, Sweden. |
| Name Pronunciation: |
Zenzenite + Pronunciation  |
| Synonym: |
IMA1990-031 |
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Zenzenite Crystallography
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| Axial Ratios: |
a:c = 1:1.3661 |
| Cell Dimensions: |
a = 10.008, c = 13.672, Z = 4; V = 1,185.93 Den(Calc)= 6.84 |
| Crystal System: |
Hexagonal - Dihexagonal Dipyramidal H-M Symbol (6/m 2/m 2/m) Space Group: P 63/mcm |
| X Ray Diffraction: |
By Intensity(I/Io): 2.663(1), 1.687(0.8), 3.18(0.8), |
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Physical Properties of Zenzenite
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| Cleavage: |
{0001} Indistinct |
| Color: |
Black. |
| Density: |
6.83 |
| Diaphaneity: |
Opaque |
| Habit: |
Euhedral Crystals - Occurs as well-formed crystals showing good external form. |
| Hardness: |
5.7 |
| Luster: |
Metallic |
| Magnetism: |
Weakly magnetic |
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Optical Properties of Zenzenite
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| Optical Data: |
Uniaxial (?). |
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NCalc= 2.61 - from Gladstone-Dale relationship (KC = 0.2347) where Ncalc=Dcalc*KC+1
NCalc= 2.6 - from Gladstone-Dale relationship (KC = 0.2347) where Ncalc=Dmeas*KC+1
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| RL Anisotrophism: |
Distinct, in shades of gray and pale brown. |
| RL Bireflectance: |
Weak, visible only in oil. |
| RL Color: |
Bright white. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Zenzenite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
32.00 |
25.90 |
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| 420 nm |
31.70 |
26.20 |
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| 440 nm |
31.60 |
26.50 |
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| 460 nm |
31.20 |
26.20 |
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| 480 nm |
30.80 |
25.90 |
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| 500 nm |
30.40 |
25.60 |
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| 520 nm |
30.00 |
25.40 |
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| 540 nm |
29.60 |
25.10 |
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| 560 nm |
29.20 |
24.80 |
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| 580 nm |
28.70 |
24.50 |
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| 600 nm |
28.30 |
24.20 |
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| 620 nm |
27.80 |
23.90 |
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| 640 nm |
27.40 |
23.60 |
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| 660 nm |
27.10 |
23.30 |
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| 680 nm |
26.80 |
22.90 |
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| 700 nm |
26.50 |
22.60 |
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Calculated Relative Intensity Colors of Zenzenite in Air
Relative
Intensity |
0% |
40% |
80% |
100% |
120% |
160% |
200% |
240% |
280% |
320% |
360% |
370% |
| R1 |
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| R2 |
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Calculated Properties of Zenzenite
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| Electron Density: |
Bulk Density (Electron Density)=5.96 gm/cc
note: Specific Gravity of Zenzenite =6.84 gm/cc.
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| Fermion Index: |
Fermion Index = 0.11
Boson Index = 0.89 |
| Photoelectric: |
PEZenzenite = 875.33 barns/electron
U=PEZenzenite x rElectron Density=5,218.86 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Zenzenite is Not Radioactive |
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Zenzenite Classification
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| Dana Class: |
07.05.04.01 (07)Multiple Oxides |
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(07.05)where A B X2 |
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(07.05.04)Dana Group |
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07.05.04.01 Zenzenite Pb3(Fe,Mn)4Mn3O15 P 63/mcm 6/m 2/m 2/m |
| Strunz Class: |
04.CC.55 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate |
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04.C - Metal:Oxygen = 2:3, 3:5, and Similar |
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04.CC -With large and medium-sized cations |
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04.CC.55 Zenzenite Pb3(Fe,Mn)4Mn3O15 P 63/mcm 6/m 2/m 2/m |
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Other Zenzenite Information
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| References: |
NAME( AntBidBlaNic3) PHYS. PROP.(Am.Min.,Vol.76,p2024,1991) OPTIC PROP.(AntBidBlaNic3) |
| See Also: |
Links to other databases for Zenzenite :
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
15 - WWW-MINCRYST
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Print or Cut-and-Paste your Zenzenite Specimen Label here :
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Zenzenite
Pb3(Fe+++,Mn+++)4Mn++++3O15
Dana No: 07.05.04.01 Strunz No: 04.CC.55
Locality:
Notes:
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