Schoenfliesite, MgSn(OH) 6 *
Abstract A new tin mineral, magnesium hexahydroxostannate, MgSn(OH) 6 , occurs as a late-stage hydrothermal alteration product in a contact-metamorphic zone on Brooks Mountain, Seward Peninsula, Alaska. The chemical formula was derived from analysis of a mixture, and electron-microprobe study confir...
| Published in: | Zeitschrift für Kristallographie - Crystalline Materials |
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| Other Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Walter de Gruyter GmbH
1971
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1524/zkri.1971.134.1-2.116 https://www.degruyter.com/document/doi/10.1524/zkri.1971.134.1-2.116/xml https://www.degruyter.com/document/doi/10.1524/zkri.1971.134.1-2.116/pdf |
| Summary: | Abstract A new tin mineral, magnesium hexahydroxostannate, MgSn(OH) 6 , occurs as a late-stage hydrothermal alteration product in a contact-metamorphic zone on Brooks Mountain, Seward Peninsula, Alaska. The chemical formula was derived from analysis of a mixture, and electron-microprobe study confirms the assigned composition. The mineral is soluble in HCl and slowly soluble in NaOH. The symmetry is cubic, space group T h 2 – Pn 3, a = 7.759 ± 0.006 Å, Z = 4, density (calc.) 3.483 g/cm 3 . The four strongest lines in the x-ray diffraction powder pattern are 3.88 Å (100), 4.48 Å (50), 2.74 Å (25), and 1.733 Å (25). Differential thermal analyses of natural and synthetic material are in agreement. The name is given in honor of the mathematical crystallographer, A rtur M oritz S choenflies . Some crystallographic data and the densities of magnesium orthostannate and magnesium metastannate are also presented. |
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