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کلیدواژهها = Pyrolusite
تعداد مقالات: 2
Geologic and geochemical investigation on the Mn veins in Jonub-E Sehchangi, SW Birjand, Southern Khorasan province (east Iran)
دوره 27، Special Journal-106 ، اسفند 1396، ، صفحه 3-12
چکیده
Mn-bearing veins of Jonub -ESehchangi are located 200 km southwest of Birjand, Southern Khorasan province (east of Iran). These veins are hosted by andesitic rocks of Eocene to Oligocene ages. Ore minerals identified by XRD method and mineralographic studies and are Pyrolusite, cryptomelane, psilomelane, hollandite, hematite and goethite, displaying colloform and open-space filling textures. Gypsum, halite, barite, carbonate and silica are the gangue minerals. Alteration zones, specifically argillic alteration zone, are developed along the vein within the andesitic wall rocks. Based on the ... بیشتربررسی کانیزایی منگنز در جوکندی، جنوب باختر هشترود
دوره 16، شماره 63 ، خرداد 1386، ، صفحه 18-29