Can I read Xocolatlite, Ca2Mn24+Te2O12{middle dot}H2O, a new tellurate related to kuranakhite: Description and measurement of Te oxidation state by XANES spectroscopy on EtoBox?

Xocolatlite, Ca2Mn24+Te2O12{middle dot}H2O, a new tellurate related to kuranakhite: Description and measurement of Te oxidation state by XANES spectroscopy by P. V. Grundler; J. Brugger; N. Meisser; S. Ansermet; S. Borg; B. Etschmann; D. Testemale; T. Bolin is a Earth and Planetary Sciences article available to read on EtoBox.

What is Xocolatlite, Ca2Mn24+Te2O12{middle dot}H2O, a new tellurate related to kuranakhite: Description and measurement of Te oxidation state by XANES spectroscopy about?

Xocolatlite, Ca 2 Mn 4+ 2 Te 6+ 2 O 12 •H 2 O, is a rare new mineral from the Moctezuma deposit in Sonora, Mexico. It occurs as chocolate-brown crystalline crusts on a quartz matrix. Xocolatlite has a copperbrown streak, vitreous luster, and is transparent. Individual crystals show a micaceous habit. Refractive indices were found to be higher than 2.0. Density calculated from the empirical formula is 4.97 g/cm 3 , and immersion in Clerici solution indicated a density higher than 4.1 g/cm 3 . The mineral is named after the word used by the Aztecs for chocolate, in reference to its brown color and provenance. The crystallographic characteristics of this monoclinic mineral are space group P2, P2/m, or Pm, with the following unit-cell parameters refined from synchrotron X-ray powder diffraction data: a = 10.757( 3) Å, b = 4.928(3) Å, c = 8.942(2) Å, β = 102.39(3)°, V = 463.0(3) Å 3 , and Z = 2. The unavailability of a suitable crystal prevented single-crystal X-ray studies. The strongest 10 lines of the X-ray powder diffraction pattern are [d in Å (I) (hkl)]: 3.267(100)(012), 2.52(71)(303), 4.361(51) (002), 1.762(39)(323), 4.924 (34)(010), 2.244(32)(313), 1.455(24)(006), 1.996(21)(014)

Who reads Xocolatlite, Ca2Mn24+Te2O12{middle dot}H2O, a new tellurate related to kuranakhite: Description and measurement of Te oxidation state by XANES spectroscopy?

Author

P. V. Grundler; J. Brugger; N. Meisser; S. Ansermet; S. Borg; B. Etschmann; D. Testemale; T. Bolin

Publisher

Mineralogical Society of America; Walter de Gruyter GmbH (ISSN 0003-004X)

Published

2008

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)