单词 | roweite |
释义 | roweiten. Mineralogy. A very rare mineral formed by the hydrothermal alteration of manganese ore and occurring as pinkish-brown nodular masses.Roweite is a basic borate of calcium and manganese (with traces of other metals), Ca2Mn2B4O7(OH)6. Crystal system: orthorhombic. ΘΚΠ the world > the earth > minerals > types of mineral > borates > [noun] > other borates hambergite1890 nordenskiöldine1890 hulsite1908 paigeite1908 vonsenite1920 roweite1937 1937 H. Berman & F. A. Gonyer in Amer. Mineralogist 22 301 The crystals of roweite are light brown in color, lath shaped and without measurable terminations. 1975 Soviet Physics: Doklady 20 244/1 The isostructural nature of the (Mn,Mg) and Mn roweites and the [B4O5(OH)4] tetraradical..met in sodium borate. 2006 Inorg. Chem. 45 6841/2 Depending on the amount of H saturation of the four terminal oxygens of the B4O9 group, it can exist as, for example,..a [B4O5O2/2(OH)2]2− group with a [MnB4O7(OH2)]2− chain in Roweite Ca2Mn2(OH)4B4O7(OH)2. This entry has been updated (OED Third Edition, March 2011; most recently modified version published online March 2022). < n.1937 |
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