Sellaite is a magnesium fluoride mineral with the formula MgF 2. It crystallizes in the tetragonal crystal system, typically as clear to white vitreous prisms. It may be fibrous and occur as …

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Colourless, white; colourless in transmitted light. Named for Quintino Sella (7 July 1827, Sella di Mosso, Piedmont, Italy – 14 March 1884), Italian politician, mining engineer, and mineralogist. …

2021年10月25日 · An overview on Sellaite Jewelry and Gemstones. Covers details and essential information on the physical properties and characteristics of Sellaite gems.

2023年9月12日 · Sellaite is a colorless or white, rare mineral and extremely rare gemstone. It’s created through various synthetic processes. Learn sellaite’s prices, benefits, history, and …

氟镁石（Sellaite）是采集于密云县的岩石标本。

Sellaite MgF2 c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Tetragonal. Point Group: 4/m2/m2/m. Short prismatic crystals, to 5 cm, with prominent {010}, {011}, {110}, may …

Sellaite is known in its occurrences most often in included microcrystals (more rarely in free geodic crystals). It occurs in colorless or white acicular prismatic crystals, sometimes gathered …

Simplistically, Sellaite is the magnesium analogue of Fluorite which might sound like it should be common, but in reality it really isn't. Infact, any crystal of Sellaite is rare, as there are very few …

Sellaite (Sellaite). 塞萊特礦是一種氟化鎂礦物，化學式為 MgF2。它在四方晶系中結晶，通常以透明到白色的玻璃狀棱柱體形式出現。它可能呈纖維狀，並以輻射狀聚集出現。硬度莫氏5到6， …