Morganite
Morganite is a cyclosilicate mineral valued for its hardness and gem potential.
基本資料
| 化學式 | Be3Al2Si6O18 |
|---|---|
| IMA 代號 | Brl |
| 施特龍茨分類 | 9.CJ |
| 晶系 | 六方晶系 |
| 點群 | 6/mmm |
| 稀有度 | 較少見 |
| 收藏級別 | 櫃藏經典 |
| 變種來源 | 綠柱石 |
| 模式產地 | Pala, California, USA |
Morganite is the pink-to-peach gem variety of beryl, coloured by traces of manganese. It was named in 1911 after the financier and gem collector J. P. Morgan. Its soft, romantic pink has made it a popular modern jewellery stone, often shown in large, clean crystals.
Properties
Like all beryl it is hexagonal, hard (7.5–8) and forms prismatic to tabular crystals. Morganite is usually remarkably clean, and some material is gently heated to remove yellowish tints and emphasise the pink.
Occurrence
It forms in granitic pegmatites alongside other gem beryls. Brazil, Madagascar, Afghanistan, Pakistan and California (the Pala district) are notable sources. Related beryls include aquamarine, heliodor and colourless goshenite.