Natural iowaite, magnesium鈥揻erric oxychloride mineral having light green color originating from Australia has been characterized by EPR, optical, IR, and Raman spectroscopy. The optical spectrum exhibits a number of electronic bands due to both Fe(III) and Mn(II) ions in iowaite. From EPR ...
The Where of Mineral Names: Iowaite, Sioux County, IowaThe goal of this project is to produce a book on the subject, that will be released during 2019.doi:10.1080/00357529.2018.1428866Bruce CairncrossRocks & Minerals
IT HAPPENS FROM TIME TO TIME IN THE MINERALOGICAL WORLD that a mineral species gets discovered in one locality and, sometime thereafter, superior examples are found in a new far-flung area. Such is the case with iowaite. It was originally described from a drill core that penetrated Precambr...
Each mineral has its own characteristic NIR spectrum enabling recognition of the particular hydrotalcite. As such the technique has application in the field for the analysis and identification of hydrotalcites. Hydrotalcites have proven useful as an anion exchange material. Takovite and hydrotalcite ...
An atypical variety of iowaite with an extremely low content of divalent cations (Mg + Fe2+)/Fe3+of ~2.75 : 1 is identified in a late hydrothermal mineral assemblage of the Udachnaya kimberlite pipe, Yakutia. Its crystal structure is studied using a single crystal: polytype 3R, space ...
FOUGERITE, A NEW MINERAL OF THE PYROAURITE-IOWAITE GROUP: DESCRIPTION AND CRYSTAL STRUCTUREINRAClays & Clay MineralsTrolard, F, Bourrie, G, Abdelmoula, M, Refait, P, Feder, F (2007) Fougerite, a new mineral of the pyroaurite-iowaite group: description and crystal structure. Clays ...
MINERAL analysisIn Situ high-temperature powder X-ray diffraction experiments were undertaken for the coarse crystalline natural layered double hydroxides (LDHs) quintinite, hydrotalcite, stichtite, and iowaite in the temperature range 25–1000 °C, with thermal analyses of these minerals and their ...
1. The figure appears to show the layered structure of the iowaite mineral. The electron probe analysis of the mineral is shown in Fig. 2 and the quantitative results for the mineral given in Table 1. Calculations (as per Table 1) show that the formula is given by Mg5.78Fe2.09(Cl,(...