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单词 spessartite
释义

spessartite /'spesətaɪt//'spɛsɚ,taɪt/

英汉-汉英词典
n. 锰铝榴石,斜煌岩
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spessartite n. 斜煌岩;[矿物] 锰铝榴石(等于spessartine)

网络短语:
proterobase spessartite 角闪斜煌斑岩
diabase spessartite 辉绿闪斜煌斑岩
英语例句库
  1. Gold quartz vein is the major orebody which is controlled by E-W-extrusion fracture zone in the Damiaozi gold mineralized district.The granite-porphyry,spessartite and diabase are the major wallrock.
    大庙子金矿化区内金矿体以石英脉型为主,矿体的产出受东西向挤压破碎带控制,花岗斑岩和闪斜煌斑岩、辉绿岩是矿体的主要围岩。

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中文百科

煌斑岩 Lamprophyre

(重定向自Spessartite)

煌斑岩为一种浅成岩,通常颜色较深,含有由暗色矿物组成的斑晶,在肉眼观察时,其标本闪闪发光,因此而得名。其组成成分多为长石和与斑晶相同的暗色矿物,尤其是云母。按其成分可分为:

  • 云母煌斑岩,最为常见,黑色或灰黑色,风化后转为褐黄色,斑晶主要是黑云母;
  • 闪辉煌斑岩,黑色、黑绿色或绿色,斑晶主要是角闪石和透辉石,有时有橄榄石和黑云母;
  • 碱性煌斑岩,矿物成分复杂,硅质含量低,斑晶主要是碱性辉石或碱性角闪石;
英语百科

Lamprophyre 煌斑岩

(重定向自Spessartite)
Minette from Jáchymov.
Microscope view (long dimension 2 mm) of a thin section of minette from the Colorado Plateau. Magnesium-rich biotite (P, phlogopite) and clinopyroxene (C) phenocrysts in a groundmass of alkali feldspar, pyroxene, and iron-titanium oxides.
Lamprófido ofitico usado en empedrado.
Wasserspiel mit Schale und Kleinpflaster aus Sorarer Lamprophyr

Lamprophyres (Greek λαµπρός (lamprós) = "bright" and φύρω (phýro) = to mix) are uncommon, small volume ultrapotassic igneous rocks primarily occurring as dikes, lopoliths, laccoliths, stocks and small intrusions. They are alkaline silica-undersaturated mafic or ultramafic rocks with high magnesium oxide, >3% potassium oxide, high sodium oxide and high nickel and chromium.

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更新时间:2025/6/22 19:14:46