Lednevite, Cu[PO3 (OH)]·H2O, a new mineral from Murzinskoe Au deposit, Altai Krai, Russia
- 作者: Kasatkin A.V.1, Zubkova N.V.2, Gurzhiy V.V.3, Škoda R.4, Nestola F.5, Agakhanov A.A.1, Chukanov N.V.6, Belakovskiy D.I.1, Všianský D.4
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隶属关系:
- Fersman Mineralogical Museum RAS
- Moscow State University
- Saint Petersburg State University
- Masaryk University
- University of Padova
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry RAS
- 期: 卷 CLIII, 编号 2 (2024)
- 页面: 71-88
- 栏目: NEW MINERALS
- URL: https://bakhtiniada.ru/0869-6055/article/view/263453
- DOI: https://doi.org/10.31857/S0869605524020049
- EDN: https://elibrary.ru/RMZPHU
- ID: 263453
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Lednevite, ideally Cu[PO3(OH)]·H2O, is a new mineral discovered at the 255 m level of the Murzinskoe Au deposit, Krasnoshchyokovskiy District, Altai Krai, Western Siberia, Russia. It forms spherulites up to 0.1 mm in diameter, composed of very thin fibers and grouped in aggregates up to 1.5 mm across. Lednevite overgrows philipsburgite crystals on a matrix of epidote-andradite skarn and quartz and associates with malachite, chrysocolla, kaolinite, goethite and P-bearing cornubite. The new mineral is transparent, has sky blue color, very pale blue streak and vitreous lustre. Cleavage is not observed. The Mohs’ hardness is ~3. Dmeas = 3.18(2) g cm–3, Dcalc = 3.196 g cm–3. The chemical composition of lednevite is (electron microprobe, wt.%; H2O by stoichiometry): CuO 40.20, ZnO 3.92, P2O5 36.29, As2O5 4.80, H2O 14.98, total 100.15. The empirical formula calculated on the basis of 3 H and 5 O apfu is (Cu0.91Zn0.09)Σ1.00[(P0.92As0.08)Σ1.00O3(OH)]·H2O. The crystal structure was refined by the Rietveld method to Rp = 0.0042, Rwp = 0.0061, Robs = 0.0354. Lednevite is monoclinic, space group P21/a, with a = 8.6459(6), b = 6.3951(4), c = 6.8210(5) A, β = 93.866(2)°, V = 376.28(4) A3 and Z = 4. The strongest lines of the powder X-ray diffraction pattern [d, A (I, %) (hkl)] are: 5.135 (100) (110), 4.648 (33) (011), 3.241 (28) (21-1), 3.095 (49) (211), 2.891 (27) (11-2), 2.775 (53) (112), 2.568 (29) (220). The new mineral is isotypic to the synthetic CuHPO4·H2O. Some optical and spectroscopic data, which could not be obtained on natural sample, were obtained from the synthesized material. The crystal structure of the synthetic analogue of lednevite was solved from single-crystal X-ray diffraction data and refined to R1 = 0.0173 for 1159 independent reflections with I > 2σ(I). All positions of H atoms were determined. Lednevite is named for Vladimir Sergeevich Lednev, amateur mineralogist from Barnaul (Altai Krai) who collected the sample with the new mineral.
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作者简介
A. Kasatkin
Fersman Mineralogical Museum RAS
编辑信件的主要联系方式.
Email: anatoly.kasatkin@gmail.com
俄罗斯联邦, Moscow
N. Zubkova
Moscow State University
Email: anatoly.kasatkin@gmail.com
Faculty of Geology
俄罗斯联邦, MoscowV. Gurzhiy
Saint Petersburg State University
Email: anatoly.kasatkin@gmail.com
Department of Crystallography, Institute of Earth Sciences
俄罗斯联邦, Saint-PetersburgR. Škoda
Masaryk University
Email: anatoly.kasatkin@gmail.com
Department of Geological Sciences, Faculty of Science
捷克共和国, BrnoF. Nestola
University of Padova
Email: anatoly.kasatkin@gmail.com
Department of Geosciences
意大利, PadovaA. Agakhanov
Fersman Mineralogical Museum RAS
Email: anatoly.kasatkin@gmail.com
俄罗斯联邦, Moscow
N. Chukanov
Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry RAS
Email: anatoly.kasatkin@gmail.com
俄罗斯联邦, Chernogolovka
D. Belakovskiy
Fersman Mineralogical Museum RAS
Email: anatoly.kasatkin@gmail.com
俄罗斯联邦, Moscow
D. Všianský
Masaryk University
Email: anatoly.kasatkin@gmail.com
Department of Geological Sciences, Faculty of Science
捷克共和国, Brno参考
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