Yazganite Mineral Data

Yazganite Mineral Data

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General Yazganite Information

Chemical Formula:

NaFe+++2(Mg,Mn)(AsO4)3·H2O

Composition:

Molecular Weight = 601.42 gm

Sodium 3.82 % Na 5.15 % Na₂O

Magnesium 3.03 % Mg 5.03 % MgO

Manganese 2.28 % Mn 2.95 % MnO

Iron 18.57 % Fe 26.55 % Fe₂O₃

Arsenic 37.37 % As 57.32 % As₂O₅

Hydrogen 0.34 % H 3.00 % H₂O

Oxygen 34.58 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

NaFe³⁺₂Mg_0.75Mn²⁺_0.25(AsO₄)₃·(H₂O)

Environment:

Alluaudite group

IMA Status:

Proposed IMA 2003 (Dana # Added)

Locality:

Link to MinDat.org Location Data.

Name Origin:

Commission on New Minerals and Mineral Names (CNMMN)

Synonym:

IMA2003-033

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Yazganite Crystallography

Axial Ratios:

a:b:c =0.9511:1:0.5183

Cell Dimensions:

a = 12.181, b = 12.807, c = 6.6391, Z = 4; beta = 112.441° V = 957.28 Den(Calc)= 4.17

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/c

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

By Intensity(I/I_o): 2.768(1), 2.611(0.4), 3.202(0.4),2.917(0.35), 3.575(0.3), 5.63(0.2), 6.4(0.2),

Crystal Structure:

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Sarp H , Cerny R , European Journal of Mineralogy , 17 (2005) p.367-373, Yazganite, NaFe3+2(Mg,Mn)(AsO4)3*H2O, a new mineral:, its description and crystal structure, Note: variant of the johillerite structure, alluaudite group, Sample: Volcanic complex of Erciyes, 10 km south of the prefecture of Kayseri,, near Hisarcik, village Kiranardi, Turkey

Physical Properties of Yazganite

Color:

Brown, Brownish black.

Diaphaniety:

Translucent

Luster:

Adamantine

Optical Properties of Yazganite

Gladstone-Dale:

CI calc= -0.004 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2132,KC= 0.2123

Optical Data:

Biaxial (-), a=1.87, b=1.897, g=1.9, bire=0.0300

Calculated Properties of Yazganite

Electron Density:

r_electron=3.93 gm/cc
note: r_Yazganite=4.17 gm/cc.

Fermion Index

Fermion Index = 0.00713
Boson Index = 0.99287

Photoelectric:

PE_Yazganite= 32.16 barns/electron
U=PE_Yazganite x r_electron= 126.32 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Yazganite is Not Radioactive

Yazganite Classification

Dana Class:

38.2.3.10 (38)Anhydrous Phosphates, etc

(38.2)(A+ B++)5 (XO4)3

(38.2.3)Alluaudite-Wyllieite Group (Alluaudite Subgroup)

38.2.3.1 Ferrohagendorfite* (Na,Ca)2Fe(Fe,Fe)2(PO4)3 I 2₁/a 2/m

38.2.3.2 Hagendorfite NaCaMn(Fe,Fe,Mg)2(PO4)3 I 2₁/a 2/m

38.2.3.3 Varulite NaCaMn(Mn,Fe,Fe)2(PO4)3 C 2/c 2/m

38.2.3.4 Maghagendorfite NaMgMn(Fe,Fe)2(PO4)3 I 2₁/a 2/m

38.2.3.5 Ferroalluaudite NaCaFe(Fe,Mn,Fe,Mg)2(PO4)3 C 2/a 2/m

38.2.3.6 Alluaudite NaCaFe(Mn,Fe,Fe,Mg)2(PO4)3 C 2/c 2/m

38.2.3.7 Odanielite Na(Zn,Mg)3H2(AsO4)3 C 2/c 2/m

38.2.3.8 Johillerite Na(Mg,Zn)3Cu(AsO4)3 I2/c 2/m

38.2.3.9 Nickenichite Na0,8Ca0,4(Mg,Fe,Al)3Cu0,4(AsO4)3 C 2/c 2/m

38.2.3.10 Yazganite ! NaFe2(Mg,Mn)(AsO4)3·H2O C 2/c 2/m

Strunz Class:

VII/X.00-00 VII - Phosphates, Arsenates and Vanadates

VII/X - Unclassified Strunz Phosphates, Arsenates and Vanadates

VII/X.00 - Alluaudite group

Other Yazganite Information

See Also:

Links to other databases for Yazganite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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

Yazganite

NaFe+++2(Mg,Mn)(AsO4)3·H2O
Dana No: 38.2.3.10 Strunz No: VII/X.00-00
Locality:

Notes: