Cs-bearing chabazite from the Mariinskoe (Malyshevskoe) emerald-beryllium deposit, Middle Urals
Abstrak
Chabazite-Ca and chabazite-K are found in specimens from the Mariinskoe (Malyshevskoe) deposit (Ural Emerald mines). They form lenticular twins up to 1–2 mm on prehnite. Both zeolites are characterized by an atypically high Cs content: up to 1.20 wt. % Cs2O (0.10 apfu Cs) in chabazite-Ca and up to 0.75 wt. % Cs2O (0.05 apfu Cs) in chabazite-K. In contrast to chabazite-K, chabazite-Ca also contains Sr: up to 1.50 wt. % SrO = 0.15 apfu Sr. Averaged formula is (Ca1.16K0.51Mg0.21Na0.16Sr0.08Cs0.06)(Al3.71Si8.31)O24·11.9H2O for chabazite-Ca (n = 30) and (K1.21Ca0.97Na0.26Mg0.12Cs0.04)(Al3.63Si8.36)O24·12.1H2O for chabazite-K (n = 15). Infrared spectra, X-ray powder diffraction data and calculated unit cell parameters of both minerals are in good agreement with published data for chabazite. Our finding of Cs-bearing chabazite from the Ural Emerald mines is the first in the Urals and likely the second in Russia.
Penulis (2)
Andrey Karpov
Atali Agakhanov
Akses Cepat
- Tahun Terbit
- 2025
- Bahasa
- en
- Sumber Database
- CrossRef
- DOI
- 10.35597/2313-545x-2025-11-4-1
- Akses
- Open Access ✓