| Reference Type | Journal (article/letter/editorial) |
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| Title | Negevite, the pyrite-type NiP2, a new terrestrial phosphide |
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| Journal | American Mineralogist |
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| Authors | Britvin, Sergey N. | Author |
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| Murashko, Michail N. | Author |
| Vapnik, Yevgeny | Author |
| Polekhovsky, Yury S. | Author |
| Krivovichev, Sergey V. | Author |
| Vereshchagin, Oleg S. | Author |
| Shilovskikh, Vladimir V. | Author |
| Krzhizhanovskaya, Maria G. | Author |
| Year | 2020 (March 1) | Volume | 105 |
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| Page(s) | 422-427 | Issue | 3 |
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| Publisher | Mineralogical Society of America |
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| DOI | doi:10.2138/am-2020-7192Search in ResearchGate |
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| Classification | Not set | LoC | Not set |
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| Mindat Ref. ID | 4564467 | Long-form Identifier | mindat:1:5:4564467:8 |
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| GUID | b82a8e6b-7dd1-4c54-955c-4a42e16b561f |
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| Full Reference | Britvin, Sergey N., Murashko, Michail N., Vapnik, Yevgeny, Polekhovsky, Yury S., Krivovichev, Sergey V., Vereshchagin, Oleg S., Shilovskikh, Vladimir V., Krzhizhanovskaya, Maria G. (2020) Negevite, the pyrite-type NiP2, a new terrestrial phosphide. American Mineralogist, 105 (3) 422-427 doi:10.2138/am-2020-7192 |
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| Plain Text | Britvin, Sergey N., Murashko, Michail N., Vapnik, Yevgeny, Polekhovsky, Yury S., Krivovichev, Sergey V., Vereshchagin, Oleg S., Shilovskikh, Vladimir V., Krzhizhanovskaya, Maria G. (2020) Negevite, the pyrite-type NiP2, a new terrestrial phosphide. American Mineralogist, 105 (3) 422-427 doi:10.2138/am-2020-7192 |
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| In | (2020, March) American Mineralogist Vol. 105 (3) Mineralogical Society of America |
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| Abstract/Notes | Negevite, ideally NiP2, is a new phosphide mineral from pyrometamorphic complex of the Hatrurim Formation (the Mottled Zone), Southern Levant. It is found in phosphide assemblages of the Hatrurim Basin, south Negev Desert, Israel, and Daba-Siwaqa complex, Jordan. The mineral occurs as tiny isometric grains reaching 15 μm in size and forms intimate intergrowths with other phosphides related to the Fe-Ni-P system. In reflected light, negevite is white with yellowish tint and isotropic. Reflectance values for COM recommended wavelengths [R (%), λ (nm)] are as follows: 54.6 (470), 55.0 (546), 55.3 (589), 55.6 (650). Chemical composition of the holotype specimen (electron micro-probe, wt%): Ni 42.57, Co 3.40, Fe 2.87, P 42.93, S 8.33, total 100.10, corresponding to the empirical formula (Ni0.88Co0.07Fe0.06)Σ1.01(P1.68S0.31)Σ1.99. The crystal structure of negevite was solved and refined to R1 = 1.73% based on 52 independent observed [I >2σ(I)] reflections. The mineral is cubic, space group Pa3, a = 5.4816(5) Å, V = 164.71(3) Å3, and Z = 4. Dx = 4.881(1) g/cm3 calculated on the basis of the empirical formula. Negevite is a first natural phosphide belonging to the pyrite structure type. It is a chemical and structural analog of vaesite, NiS2, krutovite, NiAs2, and penroseite, NiSe2. The well-explored catalytic and photocatalytic properties of a synthetic counterpart of negevite could provide new insights into the possible role of higher phosphides as a source of low-valent phosphorus in prebiotic phosphorylation processes. |
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