Denningite Mineral Data

General Denningite Information

Chemical Formula:

(Mn,Zn)Te2O5

Composition:

Molecular Weight = 392.75 gm

Manganese 10.49 % Mn 13.55 % MnO

Zinc 4.16 % Zn 5.18 % ZnO

Tellurium 64.98 % Te 81.27 % TeO₂

Oxygen 20.37 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mn²⁺_0.75Zn_0.25Te₂O₅

Environment:

Hydrothermal Au-Te deposit.

IMA Status:

Approved IMA 1962

Locality:

Moctezuma (Bambolla) mine, 12 km south of Moctezuma, Sonora, Mexico. Link to MinDat.org Location Data.

Name Origin:

Named for Reynolds McConnell Denning (1916-1967), Professor of Mineralogy, University of Michigan, Ann Arbor, Michigan, USA.

Name Pronunciation:

Denningite + Pronunciation

Synonym:

ICSD 73991

PDF 45-1368

Denningite Image

Images:

Denningite Tellurite

Comments: Vitreous colorless to very pale yellowish elongated crystals denningite with yellow tellurite.
Location: Bambolla Mine, Moctezuma, Mun. de Moctezuma, Sonora, Mexico. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Denningite Crystallography

Axial Ratios:

a:c = 1:1.47845

Cell Dimensions:

a = 8.82, c = 13.04, Z = 8; V = 1,014.41 Den(Calc)= 5.14

Crystal System:

Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: P 4₁/nbc

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

By Intensity(I/I_o): 4.42(1), 3.38(0.8), 3.12(0.7),

Physical Properties of Denningite

Cleavage:

{001} Perfect

Color:

Colorless, Light green.

Density:

5.05

Diaphaneity:

Transparent

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Hardness:

4 - Fluorite

Luster:

Adamantine

Streak:

white

Optical Properties of Denningite

Gladstone-Dale:

CI meas= 0.056 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.073 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1839,KPDmeas= 0.1871,KC= 0.1982
Ncalc = 2 - 2.02

Optical Data:

Uniaxial (+), w=1.89, e=2, bire=0.1100.

Calculated Properties of Denningite

Electron Density:

Bulk Density (Electron Density)=4.38 gm/cc
note: Specific Gravity of Denningite =5.05 gm/cc.

Fermion Index:

Fermion Index = 0.05
Boson Index = 0.95

Photoelectric:

PE_Denningite= 235.24 barns/electron
U=PE_Denningite x rElectron Density=1,029.92 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Denningite is Not Radioactive

Denningite Classification

Dana Class:

34.04.01.01 (34)Selenites - Tellurites - Sulfites

(34.04)Dana Type

(34.04.01)Dana Group

34.04.01.01 Denningite (Mn,Zn)Te2O5 P 4₁/nbc 4/m 2/m 2/m

Strunz Class:

04.JK.30 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.J - Arsenites, Antimonites, Bismuthites, Sulfites,

04.JK -Tellurites without additional anions, without H2O

04.JK.30 Denningite (Mn,Zn)Te2O5 P 4₁/nbc 4/m 2/m 2/m

Other Denningite Information

References:

NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Denningite :
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 Denningite Specimen Label here :

Denningite

(Mn,Zn)Te2O5
Dana No: 34.04.01.01 Strunz No: 04.JK.30
Locality:

Notes:

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