Reinterpretation of the X-Ray Diffraction Patterns of Stichtite and Reevesite

Stichtite: a review

“…To confirm their observations, they attempted to simulate the powder XRD pattern of stichtite using the well established structure of hydrotalcite (3R 1 ) as a basis for their model. Good agreement between the major peaks in the model and the actual powder XRD patterns confirmed that the pink grains of stichtite were isostructural with hydrotalcite (3R 1 ) (Bookin et al, 1993).…”

“…Next, the peak positions in the powder XRD pattern of pink stichtite was investigated. The positions of all reflections in the pattern corresponded to a threelayer rhombohedral cell, which is typical of most carbonate-bearing LDHs (Bookin et al, 1993). To confirm their observations, they attempted to simulate the powder XRD pattern of stichtite using the well established structure of hydrotalcite (3R 1 ) as a basis for their model.…”

“…Powder X-ray diffraction (XRD) is a powerful technique that is often used to study crystalline minerals. Powder XRD of the mineral stichtite was investigated by Bookin et al (1993) and Mills et al (2011). Bookin et al investigated a naturally occurring stichtite collected from the Terectin Ridge (Altai Mountains).…”

“…Bookin et al exposed some of the pink grains to light over the period of one week to determine if this would be any effect on the powder XRD pattern of the material. Bookin et al (1993) reported the interlayer distances of the pink and green samples as 7.76 and 7.37 Å respectively. These values were within the expected range for an LDH type structure.…”

Минералы Системы Стихтит – Пироаурит – Айоваит – Вудаллит Из Серпентинитов Теректинского Хребта, Горный Алтай, Россия

“…Татаринова с соавторами (1985). Кристаллографическое исследование стихтита из этого объекта [Bookin et al, 1993] [Татаринов и др., 1985;Буслов, 2011;Buslov et al, 2001Buslov et al, , 2013Ota et al, 2007]. Интересно, что на рентгенограммах теректинского айоваита помимо характерных отражений политипа 3R [Allmann and Donnay, 1969;Braithwaite et al, 1994], чётко прослеживаются рефлексы модификации 2Н.…”