Mukhinite Mineral Data

General Mukhinite Information

Chemical Formula:

Ca2Al2V+++(SiO4)3(OH)

Composition:

Molecular Weight = 478.32 gm

Calcium 16.76 % Ca 23.45 % CaO

Aluminum 11.28 % Al 21.32 % Al₂O₃

Vanadium 10.65 % V 15.67 % V₂O₃

Silicon 17.62 % Si 37.68 % SiO₂

Hydrogen 0.21 % H 1.88 % H₂O

Oxygen 43.48 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ca₂Al₂V³⁺(SiO₄)₃(OH)

Environment:

Metamorphic limestone with goldmanite, muscovite, and common sulphides. V analogue of clinozoisite.

IMA Status:

Approved IMA 1969 - Dana number changed from 58.2.1a.10

Locality:

Tashelginsk iron deposit, Gornaya Shoriya, western Siberia, Russa. Link to MinDat.org Location Data.

Name Origin:

Named for Alekseia Stepanovna Mukhin (1910-1973), Russian geologist, Western Siveria Geological Administration.

Name Pronunciation:

Mukhinite + Pronunciation

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Mukhinite Crystallography

Axial Ratios:

a:b:c =1.5864:1:1.8092

Cell Dimensions:

a = 8.9, b = 5.61, c = 10.15, Z = 2; beta = 115.5° V = 457.41 Den(Calc)= 3.47

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/m

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

By Intensity(I/I_o): 2.892(1), 2.6(0.8), 2.682(0.8),

Physical Properties of Mukhinite

Cleavage:

{001} Perfect, {100} Good

Color:

Black.

Diaphaneity:

Translucent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Hardness:

8 - Topaz

Luster:

Vitreous (Glassy)

Streak:

brownish gray

Optical Properties of Mukhinite

Gladstone-Dale:

CI calc= 0.043 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2124,KC= 0.2219
Ncalc = 1.77

Optical Data:

Biaxial (+), a=1.723, b=1.733, g=1.755, bire=0.0320, 2V(Calc)=70, 2V(Meas)=88.

Pleochroism (x):

pale olive green.

Pleochroism (y):

pale reddish brown.

Pleochroism (z):

reddish brown.

Calculated Properties of Mukhinite

Electron Density:

Bulk Density (Electron Density)=3.42 gm/cc
note: Specific Gravity of Mukhinite =3.47 gm/cc.

Fermion Index:

Fermion Index = 0.0089278206
Boson Index = 0.9910721794

Photoelectric:

PE_Mukhinite= 5.06 barns/electron
U=PE_Mukhinite x rElectron Density= 17.34 barns/cc.

Radioactivity:

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

Mukhinite Classification

Dana Class:

58.02.01a.04 (58)Sorosilicate Insular, Mixed, Single, and Larger Tetrahedral Groups

(58.02)with cations in [6] and higher coordination; single and double groups (n=1,2)

(58.02.01a)Epidote group (Clinozoisite subgroup)

58.02.01a.01 Clinozoisite! Ca2Al3(SiO4)3(OH)=Ca2AlAl2(SiO4)(Si2O7)O(OH) P 2₁/m 2/m

58.02.01a.02 Epidote! Ca2(Fe,Al)3(SiO4)3(OH)=Ca2(Fe,Al)Al2(SiO4)(Si2O7)O(OH) P 2₁/m 2/m

58.02.01a.03 Epidote-(Pb)! (Ca,Pb,Sr)2(Al,Fe)3(SiO4)(Si2O7)O(OH) P 2₁/m 2/m

58.02.01a.04 Mukhinite Ca2Al2V(SiO4)3(OH) P 2₁/m 2/m

58.02.01a.05 Piemontite Ca2(Al,Mn,Fe)3(SiO4)3(OH)=Ca2(Mn,Fe)Al2(SiO4)(Si2O7)O(OH) P 2₁/m 2/m

58.02.01a.06 Piemontite-(Sr)! (Ca,Mn)(Sr,Ca)Mn(Al,Mn,Fe)2(SiO4)(Si2O7)O(OH) P 2₁/m 2/m

58.02.01a.07 Manganipiemontite-(Sr)! CaSr(Mn,Fe)2Al[Si3O12](OH) P 2₁/m 2/m

58.02.01a.08 Gatelite-(Ce)! (Ca,Ce,La,Nd)4(Al,Mg,Fe)4[Si2O7][SiO4]3(O,F,OH)3 P 2₁/a 2/m

58.02.01a.09 Clinozoisite-(Sr)! CaSrAl3(Si2O7)(SiO4)O(OH) P 2₁/m 2/m

58.02.01a.10 Uedaite-(Ce)! MnCeAl2Fe(Si2O7)(SiO4)O(OH) P 2₁/m 2/m

58.02.01a.11 Epidote-(Sr)! CaSrAl2Fe(Si2O7)(SiO4)O(OH) P 2₁/m 2/m

Strunz Class:

09.BG.05a 09 - SILICATES (Germanates)

09.B - Sorosilicates

09.BG -Sorosilicates with mixed SiO4 and Si2O7 groups;

09.BG.05a Clinozoisite Ca2Al3(SiO4)3(OH)=Ca2AlAl2(SiO4)(Si2O7)O(OH) P 2₁/m 2/m

09.BG.05a Epidote Ca2(Fe,Al)3(SiO4)3(OH)=Ca2(Fe,Al)Al2(SiO4)(Si2O7)O(OH) P 2₁/m 2/m

09.BG.05a Epidote-(Pb) (Ca,Pb,Sr)2(Al,Fe)3(SiO4)(Si2O7)O(OH) P 2₁/m 2/m

09.BG.05a Mukhinite Ca2Al2V(SiO4)3(OH) P 2₁/m 2/m

09.BG.05a Piemontite Ca2(Al,Mn,Fe)3(SiO4)3(OH)=Ca2(Mn,Fe)Al2(SiO4)(Si2O7)O(OH) P 2₁/m 2/m

09.BG.05a Piemontite-(Sr)! (Ca,Mn)(Sr,Ca)Mn(Al,Mn,Fe)2(SiO4)(Si2O7)O(OH) P 2₁/m 2/m

09.BG.05a Manganipiemontite-(Sr)! CaSr(Mn,Fe)2Al[Si3O12](OH) P 2₁/m 2/m

09.BG.05a Clinozoisite-(Sr)! CaSrAl3(Si2O7)(SiO4)O(OH) P 2₁/m 2/m

09.BG.05a Epidote-(Sr)! CaSrAl2Fe(Si2O7)(SiO4)O(OH) P 2₁/m 2/m

Other Mukhinite Information

References:

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

See Also:

Links to other databases for Mukhinite :
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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Print or Cut-and-Paste your Mukhinite Specimen Label here :

Mukhinite

Ca2Al2V+++(SiO4)3(OH)
Dana No: 58.02.01a.04 Strunz No: 09.BG.05a
Locality:

Notes: