COCCINITE, ΗgI2, FROM A BURNING DUMP OF THE ALMAZNAYA COAL MINE (EASTERN DONBAS): THE FIRST FIND IN RUSSIA
An extremely rare mercury iodide coccinite, ΗgI2, was found in a burning dump of the Almaznaya coal mine (near the settlement of Gukovo, Rostov oblast, Russia). It forms bright red tabular and short-prismatic crystals with adamantine luster up to 0.5 mm in size on a crust of native sulfur, which fil...
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South Urals Federal Research Center of Mineralogy and Geoecology UB RAS
2025-06-01
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| Series: | Минералогия |
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| Online Access: | https://journal.mineralogy.ru/wp-content/uploads/2025/06/2025_11_2_1.pdf |
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| author | A.V. Kasatkin I.V. Pekov O.V. Trofimov A.A. Agakhanov M.D. Milshina S.N. Britvin |
| author_facet | A.V. Kasatkin I.V. Pekov O.V. Trofimov A.A. Agakhanov M.D. Milshina S.N. Britvin |
| author_sort | A.V. Kasatkin |
| collection | DOAJ |
| description | An extremely rare mercury iodide coccinite, ΗgI2, was found in a burning dump of the Almaznaya coal mine (near the settlement of Gukovo, Rostov oblast, Russia). It forms bright red tabular and short-prismatic crystals with adamantine luster up to 0.5 mm in size on a crust of native sulfur, which fills the fractures in the burnt rock. This is the first find of coccinite in the Russian Federation. The reflectance values and quantitative chemical analysis of coccinite are published for the first time. The chemical composition of the mineral is as follows (wt. %, mean of five analyses, electron microprobe): Hg 45.15, Cl 0.11, Br 0.65, I 53.91, total 99.82. The empirical formula calculated based on sum of three atoms is Hg1.02I1.93Br0.04Cl0.01. The strongest reflections of the powder X-ray diffraction diagram are [d,Å(I)(hkl)]: 6.220(29)(002), 4.122(82) (101), 3.575(100)(102), 3.008(37)(103), 2.767(35)(112), 2.189(98)(114, 200). The parameters of the tetragonal unit cell calculated from the powder data are as follows: a = 4.3744(2), c = 12.4301(7) Å, V = 237.86(2) Å3. Coccinite crystallized from hot gases after the combustion of coal-bearing rocks in the inner part of the dump. |
| format | Article |
| id | doaj-art-c532ee4f85144a559d908da5f49e832f |
| institution | Kabale University |
| issn | 2313-545X 2782-2044 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | South Urals Federal Research Center of Mineralogy and Geoecology UB RAS |
| record_format | Article |
| series | Минералогия |
| spelling | doaj-art-c532ee4f85144a559d908da5f49e832f2025-08-20T03:29:19ZengSouth Urals Federal Research Center of Mineralogy and Geoecology UB RASМинералогия2313-545X2782-20442025-06-0111252110.35597/2313-545X-2025-11-2-1COCCINITE, ΗgI2, FROM A BURNING DUMP OF THE ALMAZNAYA COAL MINE (EASTERN DONBAS): THE FIRST FIND IN RUSSIAA.V. Kasatkin0I.V. Pekov1O.V. TrofimovA.A. Agakhanov2M.D. MilshinaS.N. Britvin3Fersman Mineralogical Museum RASMoscow State UniversityFersman Mineralogical Museum RASSt. Petersburg State UniversityAn extremely rare mercury iodide coccinite, ΗgI2, was found in a burning dump of the Almaznaya coal mine (near the settlement of Gukovo, Rostov oblast, Russia). It forms bright red tabular and short-prismatic crystals with adamantine luster up to 0.5 mm in size on a crust of native sulfur, which fills the fractures in the burnt rock. This is the first find of coccinite in the Russian Federation. The reflectance values and quantitative chemical analysis of coccinite are published for the first time. The chemical composition of the mineral is as follows (wt. %, mean of five analyses, electron microprobe): Hg 45.15, Cl 0.11, Br 0.65, I 53.91, total 99.82. The empirical formula calculated based on sum of three atoms is Hg1.02I1.93Br0.04Cl0.01. The strongest reflections of the powder X-ray diffraction diagram are [d,Å(I)(hkl)]: 6.220(29)(002), 4.122(82) (101), 3.575(100)(102), 3.008(37)(103), 2.767(35)(112), 2.189(98)(114, 200). The parameters of the tetragonal unit cell calculated from the powder data are as follows: a = 4.3744(2), c = 12.4301(7) Å, V = 237.86(2) Å3. Coccinite crystallized from hot gases after the combustion of coal-bearing rocks in the inner part of the dump.https://journal.mineralogy.ru/wp-content/uploads/2025/06/2025_11_2_1.pdfcoccinitemercury iodidefirst find in russiaburning dumpalmaznaya coal mineeastern donbas |
| spellingShingle | A.V. Kasatkin I.V. Pekov O.V. Trofimov A.A. Agakhanov M.D. Milshina S.N. Britvin COCCINITE, ΗgI2, FROM A BURNING DUMP OF THE ALMAZNAYA COAL MINE (EASTERN DONBAS): THE FIRST FIND IN RUSSIA Минералогия coccinite mercury iodide first find in russia burning dump almaznaya coal mine eastern donbas |
| title | COCCINITE, ΗgI2, FROM A BURNING DUMP OF THE ALMAZNAYA COAL MINE (EASTERN DONBAS): THE FIRST FIND IN RUSSIA |
| title_full | COCCINITE, ΗgI2, FROM A BURNING DUMP OF THE ALMAZNAYA COAL MINE (EASTERN DONBAS): THE FIRST FIND IN RUSSIA |
| title_fullStr | COCCINITE, ΗgI2, FROM A BURNING DUMP OF THE ALMAZNAYA COAL MINE (EASTERN DONBAS): THE FIRST FIND IN RUSSIA |
| title_full_unstemmed | COCCINITE, ΗgI2, FROM A BURNING DUMP OF THE ALMAZNAYA COAL MINE (EASTERN DONBAS): THE FIRST FIND IN RUSSIA |
| title_short | COCCINITE, ΗgI2, FROM A BURNING DUMP OF THE ALMAZNAYA COAL MINE (EASTERN DONBAS): THE FIRST FIND IN RUSSIA |
| title_sort | coccinite ηgi2 from a burning dump of the almaznaya coal mine eastern donbas the first find in russia |
| topic | coccinite mercury iodide first find in russia burning dump almaznaya coal mine eastern donbas |
| url | https://journal.mineralogy.ru/wp-content/uploads/2025/06/2025_11_2_1.pdf |
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