Classification of Yazganite |
| IMA status: | Approved 2003 |
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| Strunz 8th edition ID: | 7/A.07-35
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| Nickel-Strunz 10th (pending) edition ID: | 8.AC.10
8 : PHOSPHATES, ARSENATES, VANADATES A : Phosphates, etc. without additional anions, without H2O C : With medium-sized and large cations |
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| Dana 7th edition ID: | 38.2.7.5 |
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| mindat.org URL: | http://www.mindat.org/min-27522.html Please feel free to link to this page. |
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Type Occurrence of Yazganite |
| Type Locality: | Erciyes volcanic complex, Kayseri Province, Central Anatolia Region, Turkey |
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| Year of Discovery: | 2005 |
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| Geological Setting of type material: | in andesitic rocks of the volcanic complex of Erciyes. |
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| Associated Minerals at type locality: | |
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Physical Properties of Yazganite |
| Lustre: | Adamantine, Metallic |
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| Diaphaneity (Transparency): | Translucent |
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| Colour: | Brown to brown-black |
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| Streak: | Bright brown to yellow-gray |
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| Hardness (Mohs): | 5 |
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| Density (measured): | 4.18 g/cm3 |
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| Density (calculated): | 4.19 g/cm3 |
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Crystallography of Yazganite |
| Crystal System: | Monoclinic |
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| Class (H-M): | 2/m - Prismatic |
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| Space Group: | B2/b {B1 1 2/b} {C2/c} {C1 2/c 1} |
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| Cell Parameters: | a = 12.181Å, b = 12.807Å, c = 6.6391Å β = 112.441° |
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| Ratio: | a:b:c = 0.951 : 1 : 0.518 |
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| Unit Cell Volume: | V 957.28 ų (Calculated from Unit Cell) |
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| Z: | 4 |
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| Morphology: | Isolated prismatic crystals or aggregates formed by intergrown perfect crystals to 10x3x2 mm maximum size. Crystals elongated along the c axis and slightly flattened on {010}. |
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| Twinning: | Not observed. |
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| X-Ray Powder Diffraction: | | d-spacing | | Intensity | | 6.40 | | (20) | | 5.63 | | (20) | | 3.575 | | (30) | | 3.202 | | (40) | | 2.917 | | (35) | | 2.768 | | (100) |
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| Comments: | From type description. |
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Optical Data of Yazganite |
| Type: | Biaxial (-) |
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| RI values: | nα = 1.870 nβ = 1.897 nγ = 1.900 |
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| 2V: | Measured: 35° , Calculated: 36.5° |
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| Maximum Birefringence: | δ = 0.030
 Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration. |
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| Surface Relief: | Very High |
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| Pleochroism: | Visible |
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| Comments: | Moderate.
a = Orange-brown, yellow
y,β = Grayish yellow, colourless |
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Chemical Properties of Yazganite |
| Formula: | |
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| All elements listed in formula: | As, Fe, H, Mg, Mn, Na, O |
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Relationship of Yazganite to other Species |
| Member of Group: | |
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Related Minerals - Nickel-Strunz Grouping):
- + | |
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Related Minerals - Dana Grouping):
- + | |
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Other Names for Yazganite |
| Synonyms: | |
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| Other Languages: | |
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Other Information |
| Health Warning: | No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care. |
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References for Yazganite |
| Reference List: | Sarp, H., Černý, R. (2005) Yazganite, NaFe3+2(Mg,Mn)(AsO4)3·H2O, a new mineral: its description and crystal structure. European Journal of Mineralogy 17(2), 367-374. |
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Internet Links for Yazganite |
| Search Engines: |
Look for Yazganite on Google
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| External Links: | Look for Yazganite on WebmineralLook for Yazganite on Athena MineralogyLook for Yazganite on WikipediaLook for Yazganite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Yazganite in the Natural History Museum (London) online catalogue |
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Localities for Yazganite |