Muskoxite Mineral Data

General Muskoxite Information

Chemical Formula:

Mg7Fe+++4O13•10(H2O)

Composition:

Molecular Weight = 781.67 gm

Magnesium 21.77 % Mg 36.09 % MgO

Iron 28.58 % Fe 40.86 % Fe₂O₃

Hydrogen 2.58 % H 23.05 % H₂O

Oxygen 47.08 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mg₇Fe³⁺₄O₁₃•10(H₂O)

Environment:

From a drill core with Mg-Fe-Mn oxides.

IMA Status:

Approved IMA 1969

Locality:

Muskox intrusion, coppermine River area, NWT, Canada. Link to MinDat.org Location Data.

Name Origin:

Named for the igneous complex (the Muskox intrusion) in which the mineral occurs.

Name Pronunciation:

Muskoxite + Pronunciation

Synonym:

IMA1967-043

Muskoxite Crystallography

Axial Ratios:

a:c = 1:1.49837

Cell Dimensions:

a = 3.07, c = 4.6, Z = 0.1; V = 37.55 Den(Calc)= 3.46

Crystal System:

Trigonal Space Group: Unk (pseudo HEX-R)

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

By Intensity(I/I_o): 2.308(1), 4.61(0.8), 1.746(0.6),

Physical Properties of Muskoxite

Cleavage:

{0001} Perfect

Color:

Dark reddish brown, Reddish brown.

Density:

3.15 - 3.2, Average = 3.17

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Anhedral Grains - Granular minerals without the expression of crystal shapes

Hardness:

3 - Calcite

Luster:

Vitreous (Glassy)

Streak:

light orange brown

Optical Properties of Muskoxite

Gladstone-Dale:

CI meas= 0.092 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.167 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2327,KPDmeas= 0.2535,KC= 0.2793
Ncalc = 1.88 - 1.97

Optical Data:

Biaxial (-), b=1.8-1.81, 2V(Meas)=15-40.

Calculated Properties of Muskoxite

Electron Density:

Bulk Density (Electron Density)=3.18 gm/cc
note: Specific Gravity of Muskoxite =3.18 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_Muskoxite= 8.85 barns/electron
U=PE_Muskoxite x rElectron Density= 28.20 barns/cc.

Radioactivity:

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

Muskoxite Classification

Dana Class:

07.11.01.01 (07)Multiple Oxides

(07.11)as titano-oxides with [4] and [6] substitutions

(07.11.01)Dana Group

07.11.01.01 Muskoxite Mg7Fe4O13•10(H2O) Unk (pseudo HEX-R) Trig

Strunz Class:

04.FL.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.F - Hydroxides (without V or U)

04.FL -Hydroxides with H2O ï¿½ (OH); sheets of edge-sharing octahedra

04.FL.05 Akdalaite 5(Al2O3)•(H2O) P 6₃mc 6mm

04.FL.05 Meixnerite Mg6Al2(OH)18•4(H2O) R 3m 3 2/m

04.FL.05 Jamborite (Ni,Ni,Fe)(OH)2(OH,S,(H2O)) Unk Hex

04.FL.05 Iowaite Mg4Fe(OH)8OCl•2-4(H2O) R 3m 3 2/m

04.FL.05 Muskoxite Mg7Fe4O13•10(H2O) Unk (pseudo HEX-R) Trig

04.FL.05 Woodallite! Mg6Cr2(OH)16Cl2•4(H2O) R 3m 3 2/m

Other Muskoxite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Muskoxite :
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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Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Muskoxite Specimen Label here :

Muskoxite

Mg7Fe+++4O13•10(H2O)
Dana No: 07.11.01.01 Strunz No: 04.FL.05
Locality:

Notes:

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