Zenzenite Mineral Data

Zenzenite Mineral Data +

General Zenzenite Information

Chemical Formula:

Pb3(Fe+++,Mn+++)4Mn++++3O15

Composition:

Molecular Weight = 1,222.03 gm

Manganese 20.68 % Mn 9.04 % Mn₂O₃ / 22.77 % MnO₂

Iron 10.51 % Fe 15.03 % Fe₂O₃

Lead 49.17 % Pb 52.97 % PbO

Oxygen 19.64 % O

______ ______

100.00 % 99.80 % = TOTAL OXIDE

Empirical Formula:

Pb_2.9Fe³⁺_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.

Synonym:

IMA1990-031

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Zenzenite Crystallography

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 DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 6₃/mcm

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.663(1), 1.687(0.8), 3.18(0.8),

Crystal Structure:

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Holtstam D , Linqvist B , Johnsson M , Norrestam R , The Canadian Mineralogist , 29 (1991) p.347-354, Zenzenite: Pb3(Fe,Mn)4Mn3O15, a new mineral species, from Langban, Filipstad, Sweden, and its crystal structure, Locality: Langban, Filipstad, Sweden

Physical Properties of Zenzenite

Cleavage:

[0001] Indistinct

Color:

Black.

Density:

6.83

Diaphaniety:

Opaque

Habit:

Euhedral Crystals - Occurs as well-formed crystals showing good external form.

Hardness:

5.7

Luster:

Metallic

Magnetism:

Weakly magnetic

Optical Properties of Zenzenite

Optical Data:

Uniaxial (?).

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	∑ R₁(λ)	∑ R₂(λ)
400 nm	32.00	25.90
420 nm	31.70	26.20
440 nm	31.60	26.50
460 nm	31.20	26.20
480 nm	30.80	25.90
500 nm	30.40	25.60
520 nm	30.00	25.40
540 nm	29.60	25.10
560 nm	29.20	24.80
580 nm	28.70	24.50
600 nm	28.30	24.20
620 nm	27.80	23.90
640 nm	27.40	23.60
660 nm	27.10	23.30
680 nm	26.80	22.90
700 nm	26.50	22.60

**Calculated Relative Intensity Colors of Zenzenite in Air**
Relative Intensity	0%	40%	80%	100%	120%	160%	200%	240%	280%	320%	360%	370%
R₁
R₂

Calculated Properties of Zenzenite

Electron Density:

r_electron=5.96 gm/cc
note: r_Zenzenite=6.84 gm/cc.

Fermion Index

Fermion Index = 0.11098
Boson Index = 0.88902

Photoelectric:

PE_Zenzenite= 875.33 barns/electron
U=PE_Zenzenite x r_electron=5,218.86 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Zenzenite is Not Radioactive

Zenzenite Classification

Dana Class:

7.5.4.1 (7)Multiple Oxides

(7.5)where A B X2

(7.5.4)Dana Group

7.5.4.1 Zenzenite Pb3(Fe,Mn)4Mn3O15 P 6₃/mcm 6/m 2/m 2/m

Strunz Class:

IV/C.08-45 IV - Oxides

IV/C - Oxides with metal : oxygen = 2:3 (M2O3 and related compounds)

IV/C.08 - Yimngite - Otjisumeite series

IV/C.08-10 Yimengite K(Cr,Ti,Fe,Mg)12O19 P 6₃/mmc 6/m 2/m 2/m

IV/C.08-20 Hawthorneite Ba[Ti3Cr4Fe4Mg]O19 P 6₃/mmc 6/m 2/m 2/m

IV/C.08-22 Haggertyite! Ba[Fe6Ti5Mg]O19 P 6₃/mmc 6/m 2/m 2/m

IV/C.08-25 Batiferrite! Ba(Ti2Fe8Fe2)O19 P 6₃/mmc 6/m 2/m 2/m

IV/C.08-30 Hibonite (Ca,Ce)(Al,Ti,Mg)12O19 P 6₃/mmc 6/m 2/m 2/m

IV/C.08-35 Nezilovite! PbZn2(Mn,Ti)2Fe8O19 P 6₃/mmc 6/m 2/m 2/m

IV/C.08-40 Magnetoplumbite Pb(Fe,Mn)12O19 P 6₃/mmc 6/m 2/m 2/m

IV/C.08-45 Zenzenite Pb3(Fe,Mn)4Mn3O15 P 6₃/mcm 6/m 2/m 2/m

IV/C.08-47 Lindqvistite Pb2(Mn,Mg)Fe16027 P 6₃/mmc 6/m 2/m 2/m

IV/C.08-50 Plumboferrite Pb2Fe(11-x)MnxO19-2x(x=1/3) P 6₃/mmc 6/m 2/m 2/m

IV/C.08-60 Bartelkeite PbFeGe3O8 P 2₁,P 2₁/m Mono

IV/C.08-70 Otjisumeite PbGe4O9 P1,P 1 Tri

Other Zenzenite Information

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 -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 - WWW-MINCRYST 13 -École des Mines de Paris

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Zenzenite

Pb3(Fe+++,Mn+++)4Mn++++3O15
Dana No: 7.5.4.1 Strunz No: IV/C.08-45
Locality:

Notes: