Muskoxite Mineral Data

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.

Synonym:

IMA1967-043

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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:

TrigonalSpace 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

Optical Data:

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

Calculated Properties of Muskoxite

Electron Density:

r_electron=3.18 gm/cc
note: r_Muskoxite=3.18 gm/cc.

Fermion Index

Fermion Index = 0.02805
Boson Index = 0.97195

Photoelectric:

PE_Muskoxite= 8.85 barns/electron
U=PE_Muskoxite x r_electron= 28.20 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Muskoxite is Not Radioactive

Muskoxite Classification

Dana Class:

7.11.1.1 (7)Multiple Oxides

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

(7.11.1)Dana Group

7.11.1.1 Muskoxite Mg7Fe4O13·10(H2O) Unk (pseudo HEX-R) Trig

Strunz Class:

IV/F.05-30 IV - Oxides

IV/F - Hydroxides and oxidic hydrates, water-bearing oxides with layered structure

IV/F.05 - Meixnerite - Muskoxite series

IV/F.05-10 Meixnerite Mg6Al2(OH)18·4(H2O) R 3m 3 2/m

IV/F.05-15 Woodallite! Mg6Cr2(OH)16Cl2·4(H2O) R 3m 3 2/m

IV/F.05-20 Iowaite Mg4Fe(OH)8OCl·2-4(H2O) R 3m 3 2/m

IV/F.05-30 Muskoxite Mg7Fe4O13·10(H2O) Unk (pseudo HEX-R) Trig

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 -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 -École des Mines de Paris

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

Muskoxite

Mg7Fe+++4O13·10(H2O)
Dana No: 7.11.1.1 Strunz No: IV/F.05-30
Locality:

Notes: