Emery (rock)

（重定向自Iron spinel）

Corundite (emery rock) from the Naxos Emery Deposits. The corundum is blue, or sapphire. Wet slab, 10 cm (3.9 in) wide.

Emery (or corundite) is a dark granular rock used to make abrasive powder. Emery is named after Cape Emeri, Island of Naxos, where it was first discovered. It largely consists of the mineral corundum (aluminium oxide), mixed with other species such as the iron-bearing spinels, hercynite, and magnetite, and also rutile (titania). Industrial emery may contain a variety of other minerals and synthetic compounds such as magnesia, mullite, and silica.

单词	Iron spinel
释义	Iron spinel 英语百科 Emery (rock) （重定向自Iron spinel） Emery (or corundite) is a dark granular rock used to make abrasive powder. Emery is named after Cape Emeri, Island of Naxos, where it was first discovered. It largely consists of the mineral corundum (aluminium oxide), mixed with other species such as the iron-bearing spinels, hercynite, and magnetite, and also rutile (titania). Industrial emery may contain a variety of other minerals and synthetic compounds such as magnesia, mullite, and silica.
随便看	transitarium的意思 transit的意思 Transit Authority的意思 transit authorization certificate的意思 transit axis的意思 transit banana的意思 transit beacon的意思 transit beacons的意思 transit bearing的意思 transit bill的意思 transit bond的意思 transit box的意思 transit bridging的意思 Transit bus的意思 transit calibration的意思 transit call的意思 Transit camp的意思 transit camps的意思 transit cargo的意思 transit carrier的意思 transit car without resorting的意思 transit car with resorting的意思 Transit center的意思 Transit check的意思 Transit Circle的意思