Classification of Maoniupingite-(Ce) |
| IMA status: | Approved 2003 |
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| Strunz 8th edition ID: | 8/C.17-
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| Nickel-Strunz 10th (pending) edition ID: | 9.BE.70
9 : SILICATES (Germanates) B : Sorosilicates E : Si2O7 groups, with additional anions; cations in octahedral [6] and greater coordination |
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Type Occurrence of Maoniupingite-(Ce) |
| Type Locality: | Maoniuping REE deposit, Mianning Co., Liangshan Autonomous Prefecture, Sichuan Province, China |
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Physical Properties of Maoniupingite-(Ce) |
| Lustre: | Resinous, Sub-Metallic |
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| Diaphaneity (Transparency): | Opaque |
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| Colour: | Black, brown-black |
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Crystallography of Maoniupingite-(Ce) |
| Crystal System: | Monoclinic |
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| Class (H-M): | 2/m - Prismatic |
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| Space Group: | B2/m {B1 1 2/m} {C2/m} {C1 2/m 1} |
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| Cell Parameters: | a = 13.385Å, b = 5.742Å, c = 11.059Å β = 100.6° |
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| Ratio: | a:b:c = 2.331 : 1 : 1.926 |
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| Unit Cell Volume: | V 835.45 ų (Calculated from Unit Cell) |
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| X-Ray Powder Diffraction: | | d-spacing | | Intensity | | 4.89 | | (35) | | 3.490 | | (40) | | 3.189 | | (80) | | 3.004 | | (40) | | 2.874 | | (40) | | 2.760 | | (40) | | 2.722 | | (100) |
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| Comments: | From type description. |
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Optical Data of Maoniupingite-(Ce) |
| Type: | Biaxial (-) |
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| RI values: | nα = 1.937 nγ = 1.970 |
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| Maximum Birefringence: | δ = 0.033
 Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration. |
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| Surface Relief: | Moderate |
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| Type: | Anisotropic |
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| Anisotropism: | Strong |
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| Bireflectance: | Weak |
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| Reflectivity: | | 470 nm | R1=12.5% | R2=14.6% | | 546 nm | R1=12.1% | R2=14.4% | | 589 nm | R1=12.1% | R2=14.3% | | 650 nm | R1=11.2% | R2=13.7% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 14.6%. R1 shown in black, R2 shown in red |
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| Colour in reflected light: | grey |
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| Internal Reflections: | yellowish-grey |
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| Pleochroism: | Weak |
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Chemical Properties of Maoniupingite-(Ce) |
| Formula: | | (Ce,Ca) | | (Fe | | ,Ti,Fe | | ,◻)(Ti,Fe | | ,Fe | | ,Nb) | | (Si | | O | | ) | | O | | |
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| Idealised Formula: | |
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| Essential elements: | Ce, Fe, O, Si, Ti |
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| All elements listed in formula: | Ca, Ce, Fe, Nb, O, Si, Ti |
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Relationship of Maoniupingite-(Ce) to other Species |
| Member of: | Chevkinite Group |
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Other Members of Group:
- + | |
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Related Minerals - Nickel-Strunz Grouping):
- + | |
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Other Names for Maoniupingite-(Ce) |
| 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 Maoniupingite-(Ce) |
Reference List:
- + | Yang, Z., Fleck, M., Smith, M., Tao, K., Song, R., Zhang, P. (2002): The crystal structure of natural Fe-rich chevkinite-(Ce). European Journal of Mineralogy, 14, 969-975.
Ganfu Shen, Guangming Yang, Jinsha Xu (2005): Maoniupingite-Ce: A New rare-earth Mineral from the Maoniuping rare-earth Deposit in Mianning, Sichuan. Sedimentary Geology and Tethyan Geology [Chenji Yu Tetisi Dizhi] 25(1/2), 210-216 (in Chinese with English abstract). |
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Internet Links for Maoniupingite-(Ce) |
| Search Engines: |
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| External Links: | Look for Maoniupingite-(Ce) on WebmineralLook for Maoniupingite-(Ce) on Athena MineralogyLook for Maoniupingite-(Ce) on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure Database |
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Localities for Maoniupingite-(Ce) |
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