Schoenfliesite, MgSn(OH) 6 *

• Published in: Zeitschrift für Kristallographie - Crystalline Materials
• Other Authors: Faust, George T., Schaller, Waldemar T.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Walter de Gruyter GmbH 1971
• Subjects: Inorganic Chemistry; Condensed Matter Physics; General Materials Science; Seward Peninsula; Alaska
• 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

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.