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Yazganite
A valid IMA mineral species
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Formula:
NaFe3+2(Mg,Mn2+)(AsO4)3 · H2O
Colour:
Brown to brown-black
Lustre:
Adamantine, Metallic
Hardness:
5
Specific Gravity:
4.18
Crystal System:
Monoclinic
Member of:
Name:
For Dr. Evren Yazgan (1943-), Turkish geologist, who collected the samples containing the mineral.
Alluaudite Group.
Structure is a variant of the Johillerite structure. The first hydrated mineral in this group.
Structure is a variant of the Johillerite structure. The first hydrated mineral in this group.
Unique Identifiers
Mindat ID:
27522
Long-form identifier:
mindat:1:1:27522:0
IMA Classification of Yazganite
Classification of Yazganite
8.CF.10
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
F : With large and medium-sized cations, RO4:H2O > 1:1
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
F : With large and medium-sized cations, RO4:H2O > 1:1
Dana 7th ed.:
38.2.7.5
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Yaz | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Yazganite
Adamantine, Metallic
Transparency:
Translucent
Colour:
Brown to brown-black
Streak:
Bright brown to yellow-gray
Hardness:
5 on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Conchoidal
Density:
4.18 g/cm3 (Measured) 4.19 g/cm3 (Calculated)
Optical Data of Yazganite
Type:
Biaxial (-)
RI values:
nα = 1.870 nβ = 1.897 nγ = 1.900
2V:
Measured: 35° , Calculated: 36.5°
Max. Birefringence:
δ = 0.030
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
Surface Relief:
Moderate
Optical Extinction:
X ∧ a = 5°, Y = b, Z ∧ c = 17°.
Pleochroism:
Visible
Comments:
Moderate. α = orange brown, yellow; γ = β = grayish yellow, colorless.
Chemistry of Yazganite
Mindat Formula:
NaFe3+2(Mg,Mn2+)(AsO4)3 · H2O
Element Weights:
Crystallography of Yazganite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Cell Parameters:
a = 12.181 Å, b = 12.807 Å, c = 6.6391 Å
β = 112.441°
β = 112.441°
Ratio:
a:b:c = 0.951 : 1 : 0.518
Unit Cell V:
957.28 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Isolated prismatic crystals or aggregates. Type material: Prismatic crystals are elongated on [001], flattened on {010} with forms {010}, {100}, {110}, {131}, {111}, and {311}.
Twinning:
Not observed.
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0007100 | Yazganite | Sarp H, Cerny R (2005) Yazganite, NaFe3+2(Mg,Mn)(AsO4)3*H2O, a new mineral: its description and crystal structure European Journal of Mineralogy 17 367-373 | 2005 | Volcanic complex of Erciyes, Kiranardi, Turkey | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.40 Å | (20) |
| 5.63 Å | (20) |
| 3.575 Å | (30) |
| 3.202 Å | (40) |
| 2.917 Å | (35) |
| 2.768 Å | (100) |
| 2.611 Å | (40) |
Comments:
From type description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 46 : Near-surface hydrothermal alteration of minerals (see also #22) |
Type Occurrence of Yazganite
General Appearance of Type Material:
Isolated prismatic crystals or aggregates formed by intergrown perfect crystals to 10x3x2 mm maximum size.
Place of Conservation of Type Material:
Department of Mineralogy, Natural History Museum of Geneva, Switzerland, 478.188.
Geological Setting of Type Material:
In andesitic rocks of the volcanic complex of Erciyes.
Associated Minerals at Type Locality:
Synonyms of Yazganite
Other Language Names for Yazganite
Relationship of Yazganite to other Species
Member of:
Other Members of Alluaudite Group:
| Alluaudite | (Na,Ca)Mn2+(Fe3+,Mn2+,Fe2+,Mg)2(PO4)3 | Mon. 2/m : B2/b |
| 'Alluaudite-Ca[]' | ◻4Ca4Mn2+4Fe3+8(PO4)12 | Mon. 2/m : B2/b |
| 'Alluaudite-Na[]' | ◻4Na4Mn2+4Fe3+8(PO4)12 | Mon. 2/m : B2/b |
| Arseniopleite | NaCaMnMn2(AsO4)3 | Mon. 2/m |
| Badalovite | Na2Mg2Fe(AsO4)3 | Mon. 2/m : B2/b |
| Bradaczekite | NaCu4(AsO4)3 | Mon. 2/m : B2/b |
| Calciohatertite | NaNaCa(CaFe3+)(AsO4)3 | Mon. 2/m : B2/b |
| Calciojohillerite | NaCaMg3(AsO4)3 | Mon. 2/m : B2/b |
| Camanchacaite | NaCaMg2[AsO4][AsO3(OH)]2 | Mon. 2/m : B2/b |
| Canutite | NaMn3[AsO4][AsO3(OH)]2 | Mon. 2/m : B2/b |
| Caryinite | (Na,Pb)(Ca,Na)CaMn2+2(AsO4)3 | Mon. 2/m |
| Erikapohlite | Cu3(Zn,Cu,Mg)4Ca2(AsO4)6 · 2H2O | Mon. 2/m : B2/m |
| Ferroalluaudite | (Na,Ca)Fe2+(Fe3+,Mn2+,Fe2+)2(PO4)3 | Mon. 2/m : B2/b |
| 'Ferroalluaudite-NaNa' | Na4Na4Fe2+4Fe3+8(PO4)12 | Mon. 2/m : B2/m |
| 'Ferrohagendorfite' | NaCaFe2+Fe2+2(PO4)3 | Mon. |
| Groatite | NaCaMn2(PO4)[PO3(OH)]2 | Mon. 2/m : B2/b |
| Hagendorfite | NaCaMn2+Fe2+2(PO4)3 | Mon. 2/m : B2/b |
| 'Hagendorfite-NaNa' | NaNaFe2+(Mn2+,Mn3+)(PO4)3 (?) | Mon. 2/m : B2/b |
| Hatertite | Na2(Ca,Na)(Fe3+,Cu)2(AsO4)3 | Mon. 2/m : B2/b |
| Johillerite | Na(Mg,Zn)3Cu(AsO4)3 | Mon. 2/m : B2/b |
| Keyite | Cu2+3Zn4Cd2(AsO4)6 · 2H2O | Mon. 2/m |
| Khrenovite | Na3Fe3+2(AsO4)3 | Mon. 2/m : B2/b |
| Maghagendorfite | (Na,◻)MgMn2+(Fe2+,Fe3+)2(PO4)3 | Mon. 2/m |
| Magnesiocanutite | NaMnMg2[AsO4]2[AsO2(OH)2] | Mon. 2/m : B2/b |
| Magnesiohatertite | (Na,Ca)2Ca(Mg,Fe3+)2(AsO4)3 | Mon. 2/m : B2/b |
| Nickenichite | Na0.8Ca0.4Cu0.4(Mg,Fe)3(AsO4)3 | Mon. 2/m : B2/b |
| O'Danielite | Na(Zn,Mg)3(AsO4)(AsO3OH)2 | Mon. 2/m : B2/b |
| Paraberzeliite | NaCa2Mg2(AsO4)3 | Mon. 2/m : B2/b |
| 'Unnamed (Mn-analogue of Alluaudite)' | (Na,Ca)Mn2+(Mn3+,Fe3+,Fe2+)2(PO4)3 | |
| 'Unnamed (Na-Mg Arsenate Hydroxyarsenate)' | NaMg3(AsO4)(AsO3OH)2 | Mon. 2/m : B2/b |
| 'Unnamed (Na-Zn-H Arsenate Hydroxyarsenate)' | Na(Na0.6Zn0.4)Zn2(H0.6AsO4)(AsO3OH)2 | Mon. 2/m : B2/b |
| Varulite | NaCaMn2+Mn2+2(PO4)3 | Mon. 2/m : B2/b |
| Zhanghuifenite | Na3Mn4Mg2Al(PO4)6 | Mon. 2/m |
| Zincobradaczekite | NaZn2Cu2(AsO4)3 | Mon. 2/m : B2/b |
Related Minerals - Strunz-mindat Grouping
| 8.CF. | Ferraioloite | MgMn2+4(Fe2+0.5Al3+0.5)4Zn4(PO4)8(OH)4(H2O)20 |
| 8.CF. | Naalasite | NaAl(AsO3OH)2 · H2O |
| 8.CF. | Nafeasite | Na3Fe3+3(AsO3OH)6 · 3H2O |
| 8.CF. | Falsterite | Ca2MgMn2+2Fe2+2Fe3+2Zn4(PO4)8(OH)4(H2O)14 |
| 8.CF. | Espadaite | Na4Ca3Mg2[AsO3(OH)]2[AsO2(OH)2]10 · 7H2O |
| 8.CF. | Liraite | NaCa2Mn2+2[Fe3+Fe2+]Mn2+2(PO4)6(H2O)2 |
| 8.CF.05 | Tassieite | (Na,◻)Ca2(Mg,Fe2+,Fe3+)2(Fe2+,Mg)2(Fe3+,Mg)2(PO4)6 · 2H2O |
| 8.CF.05 | Bederite | Ca2(Mn2+)4(Fe3+)2(PO4)6 · 2H2O |
| 8.CF.05 | Wicksite | NaCa2(Fe2+,Mn2+)4MgFe3+(PO4)6 · 2H2O |
| 8.CF.05 | Grischunite | NaCa2Mn2+5Fe3+(AsO4)6 · 2H2O |
| 8.CF.05 | Maneckiite | (Na◻)Ca2Fe2+2(Fe3+Mg)Mn2(PO4)6 · 2H2O |
| 8.CF.10 | Haigerachite | KFe3+3(PO3OH)2[PO2(OH)2]6 · 4H2O |
| 8.CF.15 | Currierite | Na4Ca3MgAl4(AsO3OH)12 · 9H2O |
| 8.CF.20 | Ríosecoite | Ca2Mg(AsO3OH)3(H2O)2 |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Yazganite
mindat.org URL:
https://www.mindat.org/min-27522.html
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References for Yazganite
Reference List:
Localities for Yazganite
Showing 1 localities.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Turkey (TL) | |
| Sarp et al. (2005) |
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