Cranswickite — a rare tetrahydrate sulfate of magnesium MgSO4 ∙ 4H2O, the new find in Yakutia
- 作者: Zayakina N.V.1
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隶属关系:
- Diamond and Precious Metal Geology Institute, Siberian Branch RAS
- 期: 卷 148, 编号 1 (2019)
- 页面: 49-53
- 栏目: МИНЕРАЛЫ И ПАРАГЕНЕЗИСЫ МИНЕРАЛОВ
- URL: https://journals.eco-vector.com/0869-6055/article/view/11282
- DOI: https://doi.org/10.30695/zrmo/2019.1481.04
- ID: 11282
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Cranswickite — a rare tetrahydrate magnesium sulfate, MgSO4 ∙ 4H2O, has been discovered in the Malo-Tarynskoe gold ore deposit in Yakutia. It is its third find in the world, the second in Yakutia. The mineral is soft, it forms a crust of white and slightly grayish color on the rock surface. It associates with mica, chlorite, quartz, gypsum and pentahydrite. Its study has been carried out by X-ray phase and electron microprobe analyses. Its chemical composition is MgO — 20.12, SO3 — 43.50, H2O — 36.37 wt %. The empirical crystal chemical formula of the mineral is Mg0.99(SO4)1.08·4.02H2O. The mineral is hypergenic, it is formed probably due to oxidation of pyrite in sulfidized rocks. It is sufficiently stable while stored in laboratory conditions. The photograph and X-ray diffraction pattern of the sample are given in the paper.
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作者简介
N. Zayakina
Diamond and Precious Metal Geology Institute, Siberian Branch RAS
编辑信件的主要联系方式.
Email: n.v.zayakina@diamond.ysn.ru
俄罗斯联邦, Yakutsk
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