Gem corundum deposits are typically divided into blue sapphire and ruby deposits.
However, this classification often overlooks the fact that the precious stones produced are …

Plumasite-type corundum occurrences in the Nattivit area in South-East Greenland offer a
unique opportunity to study corundum formation in-situ where pegmatites intruded into …

Corundum is rarely found in situ within alkali syenites. A corundum-bearing syenite was
found in the Yushishan rare metal deposits of the eastern section of the Altyn Tagh fault in …

The geographic origin of gem corundum has emerged as one of its major value factors.
Combined with gemological observations, trace element analysis is a powerful tool for the …

Kyshtymites are the unique corundum-blue sapphire-bearing variety of anorthosites of
debatable geological origin found in the Ilmenogorsky-Vishnevogorsky complex (IVC) in the …

Metamorphic gem corundum (mainly ruby) deposits are robust indicators of continent-
continent collision processes. However, a systematic link of primary magmatic blue sapphire …

Primary rubies in the Ailao Shan of Yunnan Province, China, are found in three layers of
marble. However, the origin and source rocks of placer rubies in the Yuanjiang area remains …

Corundum-bearing anatectic aluminous rocks are exposed in the deeply subducted North
Dabie complex zone (NDZ), of Central China. The rocks consist of corundum, biotite, K …

Изучены кристаллы корунда с каймами шпинели и широким спектром минералов-
включений из актинолит-слюдяной жилы в изменённых гипербазитах, расположенных …

New geochemical, mineralogical, and Rb–Sr and Sm–Nd isotopic data have been obtained
on corundum plagioclasites–kyshtymites from the 5th Versta deposit (South Urals, Russia) …