Mineralogy Database

Yazganite Mineral Data

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General Yazganite Information

Help on Chemical  Formula: Chemical Formula: NaFe+++2(Mg,Mn)(AsO4)3•H2O
Help on Composition: 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
Help on Empirical Formula: Empirical Formula: Na0.99Fe3+2.05Mg0.61Mn2+0.32Zn0.02As2.99O12�0.88(H2O)
Help on Environment: 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.
Help on IMA Status: IMA Status: Approved IMA 2003 (Dana # Added)
Help on Locality: Locality: Erciyes volcanic complex, 10 km south of the prefecture of Kayseri, near Hisarcik, Kiranardi, Turkey. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Dr. Evren Yazgan (b. 1943), a geologist in Turkey who worked in this region.
Help on Synonym: Synonym: IMA2003-033

Yazganite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9511:1:0.5183
Help on Cell Dimensions: Cell Dimensions: a = 12.181, b = 12.807, c = 6.6391, Z = 4; beta = 112.441° V = 957.28 Den(Calc)= 4.18
Help on Crystal System: 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/Io): 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

Help on Cleavage: Cleavage: None
Help on Color: Color: Brown, Brownish black.
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 5 - Apatite
Help on Luster: Luster: Sub Metallic
Help on Streak: Streak: brownish to yellow-gray

Optical Properties of Yazganite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= -0.77 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2127,KC= 0.1201
Ncalc = 1.5
Help on Optical Data: 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

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.93 gm/cc
note: Specific Gravity of Yazganite =4.18 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.006739163
Boson Index = 0.993260837
Help on Photoelectric: Photoelectric: PEYazganite = 32.44 barns/electron
U=PEYazganite x rElectron Density= 127.59 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Yazganite is Not Radioactive

Yazganite Classification

Help on  Dana Class: Dana Class: (38)Anhydrous Phosphates, etc
  (38.02)(A+ B++)5 (XO4)3
  (38.02.03)Alluaudite-Wyllieite Group (Alluaudite Subgroup) Ferrohagendorfite* (Na,Ca)2Fe(Fe,Fe)2(PO4)3 I 21/a 2/m Hagendorfite NaCaMn(Fe,Fe,Mg)2(PO4)3 I 21/a 2/m Varulite NaCaMn(Mn,Fe,Fe)2(PO4)3 C 2/c 2/m Maghagendorfite NaMgMn(Fe,Fe)2(PO4)3 I 21/a 2/m Ferroalluaudite NaCaFe(Fe,Mn,Fe,Mg)2(PO4)3 C 2/a 2/m Alluaudite NaCaFe(Mn,Fe,Fe,Mg)2(PO4)3 C 2/c 2/m Odanielite Na(Zn,Mg)3H2(AsO4)3 C 2/c 2/m Johillerite Na(Mg,Zn)3Cu(AsO4)3 I2/c 2/m Nickenichite Na0,8Ca0,4(Mg,Fe,Al)3Cu0,4(AsO4)3 C 2/c 2/m Yazganite! NaFe2(Mg,Mn)(AsO4)3•H2O C 2/c 2/m IMA2008-054! NaCaMn2(PO4)[PO3(OH)]2 C 2/c 2/m IMA2008-064! Na16Mn25Al8(PO4)30 Pc m
Help on  Strunz Class: 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

Help on References: References: NAME( AmMin v90, p1950) PHYS. PROP.(AmMin v90, p1950) OPTIC PROP.(AmMin v90, p1950)
Help on See Also: 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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Dana No: Strunz No: 08.AC.10





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