烧绿石

烧绿石(英语:Pyrochlore)是一类含矿物,化学式可表示为Na,Ca)2Nb2O6(OH,F)。

Pyrochlore
Pyrochlore from Russia
基本資料
類別Oxide mineral
化学式(Na,Ca)2Nb2O6(OH,F)
施特龙茨分类4.DH.15
戴納礦物分類08.02.01.01
烧绿石group
晶体分类Hexoctahedral (m3m)
H-M symbol: (4/m 3 2/m)
晶体空间群Fd3m
晶胞a = 10.41(6) Å, Z = 8
性質
顏色Black to brown, chocolate-brown, reddish brown, amber-orange, red-orange
晶体惯态Typically octahedra, disseminated granular, massive
晶系Isometric
雙晶111 rare
解理111 indistinct, may be a parting.
断口Subconchoidal to uneven, splintery
韌性/脆性
莫氏硬度5.0–5.5
光澤Vitreous to resinous
條痕
透明性Subtranslucent to opaque
比重4.45 to 4.90
光學性質Isotropic, weak anomalous anisotropism
折射率n = 1.9–2.2
其他特徵Variably radioactive, often metamict
參考文獻[1][2][3][4]

烧绿石也是通式为A2B2O7(其中A和B均为金属)的晶体的结构。

发现

烧绿石最初于1826年于Stavern (Fredriksvärn), Larvik, Vestfold, Norway发现,其名称源于古希腊语的“火”和“绿色”——它在经典吹管分析中燃烧会变绿。[3]

参考文献

维基共享资源中相关的多媒体资源:烧绿石
  1. . [2018-02-13]. (原始内容存档于2020-11-07).
  2. (PDF). rruff.info. [2015-02-03]. (原始内容存档 (PDF)于2020-11-25).
  3. . mindat.org. [2015-02-03]. (原始内容存档于2021-04-22).
  4. Barthelmy, Dave. . webmineral.com. [2015-02-03]. (原始内容存档于2021-02-01).
  • Atencio, D.; Andrade, M. B.; Christy, A. G.; Gieré, R.; Kartashov, P. M. . The Canadian Mineralogist. 2010, 48 (3): 673–698. doi:10.3749/canmin.48.3.673.

[2]. BP Mandal, AK Tyagi - Barc Newslett, 2010 - barc.gov.in

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