Classification of Paratsepinite-Na |
| IMA status: | Approved 2003 |
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| Nickel-Strunz 10th (pending) edition ID: | 9.CE.30b
9 : SILICATES (Germanates) C : Cyclosilicates E : [Si4O12]8- 4-membered single rings (vierer-Einfachringe), without insular complex anions |
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| mindat.org URL: | http://www.mindat.org/min-27504.html Please feel free to link to this page. |
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Type Occurrence of Paratsepinite-Na |
| Type Locality: | Khibinpakhkchorr Mt., Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia |
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Physical Properties of Paratsepinite-Na |
| Lustre: | Vitreous |
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| Diaphaneity (Transparency): | Transparent |
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| Colour: | Colourless |
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Crystallography of Paratsepinite-Na |
| 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 = 14.596Å, b = 14.249Å, c = 15.852Å β = 117.27° |
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| Ratio: | a:b:c = 1.024 : 1 : 1.112 |
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| Unit Cell Volume: | V 2,930.45 ų (Calculated from Unit Cell) |
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| X-Ray Powder Diffraction: | | d-spacing | | Intensity | | 7.09 | | (100) | | 3.24 | | (90) | | 3.15 | | (80) | | 3.11 | | (80) | | 2.54 | | (70) | | 2.491 | | (70) |
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| Comments: | From type description. |
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Optical Data of Paratsepinite-Na |
| Type: | Biaxial (+) |
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| RI values: | nα = 1.657 nβ = 1.666 nγ = 1.765 |
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| 2V: | Measured: 19° to 31°, Calculated: 35° |
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| Maximum Birefringence: | δ = 0.108
 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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Chemical Properties of Paratsepinite-Na |
| Formula: | | (Na,Sr,K,Ca) | | (Ti,Nb) | | (Si | | O | | ) | | (O,OH) | | ·nH | | O n ~ 8 |
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| Essential elements: | H, Na, O, Si, Ti |
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| All elements listed in formula: | Ca, H, K, Na, Nb, O, Si, Sr, Ti |
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Relationship of Paratsepinite-Na to other Species |
| Member of: | Labuntsovite 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 Paratsepinite-Na |
| 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 Paratsepinite-Na |
Reference List:
- + | N. I. Organova, S. V. Krivovichev, Z. V. Shlyukova, A. E. Zadov, I. V. Rozhdestvenskaya and T. I. Ivanova (2004) Structure of the new mineral paratsepinite-Na and its place in the labuntsovite group
Crystallography Reports Volume 49, Number 6 / November Pages 946-952 |
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Internet Links for Paratsepinite-Na |
| Search Engines: |
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| External Links: | Look for Paratsepinite-Na on WebmineralLook for Paratsepinite-Na on Athena MineralogyLook for Paratsepinite-Na on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure Database |
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Localities for Paratsepinite-Na |
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