Zhemchuzhnikovite Mineral Data

Zhemchuzhnikovite Mineral Data +

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General Zhemchuzhnikovite Information

Chemical Formula:

NaMg(Al,Fe+++)(C2O4)3·8(H2O)

Composition:

Molecular Weight = 494.00 gm

Sodium 4.65 % Na 6.27 % Na₂O

Magnesium 4.92 % Mg 8.16 % MgO

Aluminum 3.28 % Al 6.19 % Al₂O₃

Iron 4.52 % Fe 6.47 % Fe₂O₃

Hydrogen 3.26 % H 29.17 % H₂O

Carbon 14.59 % C 43.74 % C₂O₃

Oxygen 64.77 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

NaMgAl_0.6Fe³⁺_0.4(C₂O₄)₃·8(H₂O)

Environment:

Lignite or coal mines.

IMA Status:

Approved IMA 1963

Locality:

Chaitumusuk deposits, Lena River, Siberia. Link to MinDat.org Location Data.

Name Origin:

Named for Yurii Apollonovich Zhemchezhnikov (1885-1957), Russian geologist.

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Zhemchuzhnikovite Crystallography

Axial Ratios:

a:c = 1:0.75044

Cell Dimensions:

a = 16.67, c = 12.51, Z = 6; V = 3,010.64 Den(Calc)= 1.63

Crystal System:

TrigonalSpace Group: Unk

Physical Properties of Zhemchuzhnikovite

Cleavage:

[0001] Good

Color:

Gray green, Violet.

Density:

1.69

Diaphaniety:

Transparent to Translucent

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Fibrous - Crystals made up of fibers.

Habit:

Water Soluble - Water soluble mineral.

Hardness:

2 - Gypsum

Luster:

Vitreous (Glassy)

Optical Properties of Zhemchuzhnikovite

Dichroism (e):

reddish violet.

Dichroism (w):

greenish yellow.

Gladstone-Dale:

CI meas= -0.634 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.694 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2721,KPDmeas= 0.2624,KC= 0.1606

Optical Data:

Uniaxial (-), e=1.408, w=1.479, bire=0.0710.

Calculated Properties of Zhemchuzhnikovite

Electron Density:

r_electron=1.73 gm/cc
note: r_{Zhemchuzhnikovite}=1.69 gm/cc.

Fermion Index

Fermion Index = 0.00779
Boson Index = 0.99221

Photoelectric:

PE_{Zhemchuzhnikovite}= 1.81 barns/electron
U=PE_{Zhemchuzhnikovite} x r_electron= 3.13 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Zhemchuzhnikovite is Not Radioactive

Zhemchuzhnikovite Classification

Dana Class:

50.1.7.2 (50)Salts of Organic Acids

(50.1)(Oxalates)

(50.1.7)Dana Group

50.1.7.1 Stepanovite NaMgFe(C2O4)3·8-9(H2O) Unk Trig

50.1.7.2 Zhemchuzhnikovite NaMg(Al,Fe)(C2O4)3·8(H2O) Unk Trig

Strunz Class:

IX/A.01-70 IX - Organic compunds

IX/A - Oxalates. Salts from organic acids. [C2O4]2- arranged after increasing cation size

IX/A.01 - Whewellite - Wheatleyite series

IX/A.01-05 Natroxalate! Na2C2O4 P 2₁/a 2/m

IX/A.01-10 Whewellite Ca(C2O4)·(H2O) P 2₁/n 2/m

IX/A.01-20 Weddellite Ca(C2O4)·2(H2O) I 4/m 4/m

IX/A.01-25 Caoxite! Ca(C2O4)·3(H2O) P1 1

IX/A.01-28 Novgorodovaite! Ca2(C2O4)Cl2·2(H2O) I2/m 2/m

IX/A.01-30 Oxammite (NH4)2(C2O4)·(H2O) P 2₁2₁2 2 2 2

IX/A.01-40 Glushinskite Mg(C2O4)·2(H2O) C 2/c 2/m

IX/A.01-50 Humboldtine Fe(C2O4)·2(H2O) I2/a 2/m

IX/A.01-55 Lindbergite! Mn(C2O4)·2(H2O) C 2/c 2/m

IX/A.01-60 Minguzzite K3Fe(C2O4)3·3(H2O) P 2₁/c 2/m

IX/A.01-70 Zhemchuzhnikovite NaMg(Al,Fe)(C2O4)3·8(H2O) Unk Trig

IX/A.01-80 Stepanovite NaMgFe(C2O4)3·8-9(H2O) Unk Trig

IX/A.01-90 Moolooite Cu(C2O4)·n(H2O)(n<1) Unk Ortho

IX/A.01-100 Wheatleyite Na2Cu(C2O4)2·2(H2O) P1 1

IX/A.01-110 Coskrenite-(Ce)! (Ce,Nd,La)2(SO4)2(C2O4)·8(H2O) C 2/c 2/m

IX/A.01-120 Levinsonite-(Y)! (Y,Nd,La)Al(SO4)2(C2O4)·12(H2O) P 2/n 2/m

IX/A.01-130 Zugshunstite-(Ce)! (Ce,Nd,La)Al(SO4)2(C2O4)·8(H2O) C 2/c 2/m

Other Zhemchuzhnikovite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Zhemchuzhnikovite :
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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Zhemchuzhnikovite

NaMg(Al,Fe+++)(C2O4)3·8(H2O)
Dana No: 50.1.7.2 Strunz No: IX/A.01-70
Locality:

Notes: