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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Bindi, Luca
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2024Crystallographic insights into monovalent thallium incorporation: Exploring hydropyrochlore structure for environmental remediation
- 2024Toledoite, TiFeSi, a New Mineral from Inclusions in Corundum Xenocrysts from Mount Carmel, Israelcitations
- 2023Thunderstruck! A quasicrystal made by lightning
- 2023A new layered potassium-based molybdenum–tungsten monophosphate: synthesis, crystal structure, XPS and magnetic studiescitations
- 2023Al‐Cu‐Fe alloys in the solar system: Going inside a Khatyrka‐like micrometeorite (KT01) from the Nubian desert, Sudancitations
- 2022Critical assessment of pressure estimates in volcanic plumbing systemscitations
- 2021Cr2O3 in corundumcitations
- 2021Role of spacer cations and structural distortion in two-dimensional germanium halide perovskitescitations
- 2020Kishonite, VH2, and Oreillyite, Cr2N, two new minerals from the corundum xenocrysts of Mt Carmel, Northern Israelcitations
- 2020Tsikourasite, Mo3Ni2P1+x (x < 0.25), a New Phosphide from the Chromitite of the Othrys Ophiolite, Greececitations
- 2019Dellagiustaitecitations
- 2018Carmeltazite, ZrAl2Ti4O11, a new mineral trapped in corundum from volcanic rocks of Mt Carmel, Northern Israelcitations
- 2016Ciriottiite, Cu(Cu,Ag)3Pb19(Sb,As)22(As2)S56, the Cu-analogue of sterryite from the Tavagnasco mining district, Piedmont, Italycitations
- 2016Ferrostalderite, CuFe2TlAs2S6, a new mineral from Lengenbach, Switzerland: Occurrence, crystal structure, and emphasis on the role of iron in sulfosaltscitations
- 2015Ralphcannonite, AgZn2TlAs2S6, a new mineral of the routhierite isotypic series from Lengenbach, Binn Valley, Switzerlandcitations
- 2014Lead-antimony sulfosalts from Tuscany (Italy). XVI. Carducciite, (AgSb)Pb6(As,Sb)8S20, a new Sb-rich derivative of rathite from the Pollone mine, Valdicastello Carducci: Occurrence and crystal structurecitations
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article
Ralphcannonite, AgZn2TlAs2S6, a new mineral of the routhierite isotypic series from Lengenbach, Binn Valley, Switzerland
Abstract
The new mineral species ralphcannonite, AgZn2TlAs2S6, was discovered in the Lengenbach quarry, Binn Valley, Wallis, Switzerland. It occurs as metallic black equant, isometric to prismatic crystals, up to 50 μm, associated with dufrenoysite, hatchite, realgar and baryte. Minimum and maximum reflectance data for COM wavelengths in air are [λ (nm): R (%)]: 471.1: 25.8/27.1; 548.3: 25.2/26.6; 586.6: 24.6/25.8; 652.3: 23.9/24.8. Electron microprobe analyses give (wt.%): Cu 2.01(6), Ag 8.50( 16), Zn 10.94(20), Fe 3.25(8), Hg 7.92(12), Tl 24.58(26), As 18.36(19), Sb 0.17(4), S 24.03(21), total 99.76(71). On the basis of 12 atoms per formula unit, the chemical formula of ralphcannonite is Ag0.63(2)Cu0.25(2)Zn1.35(5)Fe0.47(1)Hg0.32(2)Tl0.97(3)[As1.97(6)Sb0.01(1)]Σ1.9(8)S6.03(8). The new mineral is tetragonal, space group I4 2m, with a =9.861 (2), c= 11.125(3) Å, V= 1081.8(4) Å3, Z= 4. The main diffraction lines of the calculated powder diagram are [d(in Å), intensity, hkl]: 4.100, 85, 211; 3.471,40, 103; 2.954, 100, 222; 2.465, 24, 400; 2.460,39, 303. The crystal structure of ralphcannonite has been refined by X-ray single-crystal data to a final Ri =0.030, on the basis of 140 observed reflections [F0> 4σ(F0)]. It shows a three dimensional framework of (Ag,Zn)- centred tetrahedra (1 M1 + 2 M2), with channels parallel to [001] hosting TlS6 and (As5Sb)S3 disymmetric polyhedra. Ralphcannonite is derived from its isotype routhierite M1iCuM2Hg2TlAs2S6 through the double heterovalent substitution M1Cu+ + M2Hg2+→ M1Zn2+ + M2Ag+. This substitution obeys a steric constraint, with Ag+, the largest cation relative to Zn2+ and Cu+, entering the largest Ml site, as observed in arsiccioite. The ideal crystal-chemical formula of ralphcannonite is M1ZmM2(Zn0.5Ag0.5)2TlAs2S6.