Details

Autor(en) / Beteiligte

• Gerasimova, E. I.
• Prokof’iev, V. Yu
• Smirnov, S. Z.
• Kovalskaya, T. N.

Titel

High-Temperature Beryl from Vugless Granite Pegmatites of the Suprunovskoye Deposit, Irkutsk Oblast, Russia

Ist Teil von

• Geochemistry international, 2019-07, Vol.57 (7), p.829-834

Ort / Verlag

Moscow: Pleiades Publishing

Erscheinungsjahr

2019

Quelle

SpringerNature Journals

Beschreibungen/Notizen

• — New data were obtained on the chemical composition of beryl from the Suprunovskoye deposit (wt %): 66.10 SiO 2 , 0.51 Na 2 O, 17.99 Al 2 O 3 , 0.37 MgO, 0.03 K 2 O, 0.02 CaO, 0.58 FeO, and 13.70 BeO (calculated). Fluid and melt inclusions were investigated for the first time in this mineral. It was found that the beryl was formed during late stages of granite magmatism from a specific pegmatite silicate melt or a water–silicate liquid enriched in water (>7 wt %), heavy REE (La/Yb = 0.48), and lithium, and depleted in fluorine and boron at a temperature of ~700°C and a pressure of ~6 kbar.