Yazganite Mineral Data

General Yazganite Information

Chemical Formula:

NaFe+++2(Mg,Mn)(AsO4)3•H2O

Composition:

Molecular Weight = 602.82 gm

Sodium 3.78 % Na 5.09 % Na₂O

Magnesium 2.46 % Mg 4.08 % MgO

Manganese 2.92 % Mn 3.77 % MnO

Zinc 0.22 % Zn 0.27 % ZnO

Iron 18.99 % Fe 27.15 % Fe₂O₃

Arsenic 37.16 % As 60.97 % AsO₃

Hydrogen 0.29 % H 2.63 % H₂O

Oxygen 34.18 % O

______ ______

100.00 % 103.95 % = TOTAL OXIDE

Empirical Formula:

Na_0.99Fe³⁺_2.05Mg_0.61Mn²⁺_0.32Zn_0.02As_2.99O₁₂ï¿½0.88(H₂O)

Environment:

Found in fissures 1 m thick in porphyric andesite. The Erciyes stratovolcano is composed of calc-alkaline basaltic andesite and dacite lavas with intercalated pyroclastics. Alluaudi te group.

IMA Status:

Approved IMA 2003 (Dana # Added)

Locality:

Erciyes volcanic complex, 10 km south of the prefecture of Kayseri, near Hisarcik, Kiranardi, Turkey. Link to MinDat.org Location Data.

Name Origin:

Named for Dr. Evren Yazgan (b. 1943), a geologist in Turkey who worked in this region.

Synonym:

IMA2003-033

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)= 4.18

Crystal System:

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

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

By Intensity(I/I_o): 2.78(1)(240 ), 3.202(0.4)(040 ), 2.611(0.4)(132),3.575(0.3)(131), 5.63(0.2)(200 ), 6.4(0.2)(020 ), 1.645(0.15)(370 ), 3.766(0.15)(311),

Physical Properties of Yazganite

Cleavage:

None

Color:

Brown, Brownish black.

Diaphaneity:

Translucent

Fracture:

Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Euhedral Crystals - Occurs as well-formed crystals showing good external form.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Hardness:

5 - Apatite

Luster:

Sub Metallic

Streak:

brownish to yellow-gray

Optical Properties of Yazganite

Gladstone-Dale:

CI calc= -0.77 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2127,KC= 0.1201
Ncalc = 1.5

Optical Data:

Biaxial (-), a=1.87, b=1.897, g=1.9, bire=0.0300, 2V(Calc)=36, 2V(Meas)=35. Dispersion strong, r < v.

Calculated Properties of Yazganite

Electron Density:

Bulk Density (Electron Density)=3.93 gm/cc
note: Specific Gravity of Yazganite =4.18 gm/cc.

Fermion Index:

Fermion Index = 0.006739163
Boson Index = 0.993260837

Photoelectric:

PE_Yazganite= 32.44 barns/electron
U=PE_Yazganite x rElectron Density= 127.59 barns/cc.

Radioactivity:

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

Yazganite Classification

Dana Class:

38.02.03.10 (38)Anhydrous Phosphates, etc

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

(38.02.03)Alluaudite-Wyllieite Group (Alluaudite Subgroup)

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

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

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

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

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

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

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

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

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

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

38.02.03.11 IMA2008-054! NaCaMn2(PO4)[PO3(OH)]2 C 2/c 2/m

38.02.03.12 IMA2008-064! Na16Mn25Al8(PO4)30 Pc m

Strunz Class:

08.AC.10 08 - PHOSPHATES, ARSENATES, VANADATES

08.A - Phosphates, etc. without additional anions, without H2O

08.AC -With medium-sized and large cations

08.AC.10 Alluaudite NaCaFe(Mn,Fe,Fe,Mg)2(PO4)3 C 2/c 2/m

08.AC.10 Arseniopleite (Ca,Na)(Na,Pb)Mn(Mn,Mg,Fe)2(AsO4)3 I2/a 2/m

08.AC.10 Ferrohagendorfite* (Na,Ca)2Fe(Fe,Fe)2(PO4)3 I 2₁/a 2/m

08.AC.10 Caryinite (Na,Pb)(Ca,Na)(Ca,Mn)(Mn,Mg)2(AsO4)3 I2/c 2/m

08.AC.10 Hagendorfite NaCaMn(Fe,Fe,Mg)2(PO4)3 I 2₁/a 2/m

08.AC.10 Johillerite Na(Mg,Zn)3Cu(AsO4)3 I2/c 2/m

08.AC.10 Ferroalluaudite NaCaFe(Fe,Mn,Fe,Mg)2(PO4)3 C 2/a 2/m

08.AC.10 Odanielite Na(Zn,Mg)3H2(AsO4)3 C 2/c 2/m

08.AC.10 Maghagendorfite NaMgMn(Fe,Fe)2(PO4)3 I 2₁/a 2/m

08.AC.10 Nickenichite Na0,8Ca0,4(Mg,Fe,Al)3Cu0,4(AsO4)3 C 2/c 2/m

08.AC.10 Varulite NaCaMn(Mn,Fe,Fe)2(PO4)3 C 2/c 2/m

08.AC.10 Bradaczekite! NaCu4(AsO4)3 C 2/c 2/m

08.AC.10 Yazganite! NaFe2(Mg,Mn)(AsO4)3•H2O C 2/c 2/m

08.AC.10 IMA2008-054! NaCaMn2(PO4)[PO3(OH)]2 C 2/c 2/m

Other Yazganite Information

References:

NAME( AmMin v90, p1950) PHYS. PROP.(AmMin v90, p1950) OPTIC PROP.(AmMin v90, p1950)

See Also:

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

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Yazganite

NaFe+++2(Mg,Mn)(AsO4)3•H2O
Dana No: 38.02.03.10 Strunz No: 08.AC.10
Locality:

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