DOAJ Open Access 2020

I.A. Blinov

Abstrak

Cu-sulfide and rare Fe-sulfide nodules up to 2–5 cm in size are found in gray marl siltstones, which occur in a sequence of Permian sandstones of Orenburg Cis-Urals. The Cu-sulfide nodules are characterized by high Cu content (>20%) and low contents of trace elements (Fe <1.2%, As, Ag, V, and Pb <130 ppm). They are composed of Cu sulfides (minerals of the chalcocite group and covellite) with minor barite and mottramite. The Cu sulfides are transformed to malachite and, to a lesser degree, to chrysocolla and brochantite. The decomposition of Ag-bearing Cu sulfides leads to the formation of a Ag sulfide. The Fe-sulfide nodules of the Belousovsky mine are composed of pyrite. In the oxidation zone, pyrite is replaced by ferrous opal; single grains of plumbogummite are associated with Fe hydroxides.

Topik & Kata Kunci

Mineralogy

Penulis (1)

I.A. Blinov

Format Sitasi

APA MLA BibTeX

Blinov, I. (2020). I.A. Blinov. https://doi.org/10.35597/2313-545X-2020-6-4-2

Akses Cepat

PDF tidak tersedia langsung

Cek di sumber asli →

Lihat di Sumber doi.org/10.35597/2313-545X-2020-6-4-2

Informasi Jurnal

Tahun Terbit: 2020
Sumber Database: DOAJ
DOI: 10.35597/2313-545X-2020-6-4-2
Akses: Open Access ✓