Humite

humite

[′hyü‚mīt] (mineralogy) A humic coal mineral. A series of magnesium neosilicate minerals closely related in crystal structure and chemical composition.

Humite

a mineral of the silicate class, named for the English geologist and mineral collector A. Hume (1749–1838); in structure, isolated Si0₄ tetrahedrons with (OH)⁻ and F⁻¹ anions attached. Chemical composition, Mg₇ [Si0₄]₃(F, OH)₂. Humite crystallizes in a rhombic system, forming small dipyramidal crystals and amorphous colorless or honey-yellow grains. Hardness on the mineral scale, 6–6.5; density, 3,100–3,200 kg/m³. Humite is found as a relatively rare mineral in contact-marbled limestones.

单词	humite
释义	humite humite (ˈhjuːmaɪt) n (Geological Science) mineralogy a mineral, transparent vitreous brown to orange in colour, found in the volcanic matter on Vesuvius Humite humite [′hyü‚mīt] (mineralogy) A humic coal mineral. A series of magnesium neosilicate minerals closely related in crystal structure and chemical composition. Humite a mineral of the silicate class, named for the English geologist and mineral collector A. Hume (1749–1838); in structure, isolated Si0₄ tetrahedrons with (OH)⁻ and F⁻¹ anions attached. Chemical composition, Mg₇ [Si0₄]₃(F, OH)₂. Humite crystallizes in a rhombic system, forming small dipyramidal crystals and amorphous colorless or honey-yellow grains. Hardness on the mineral scale, 6–6.5; density, 3,100–3,200 kg/m³. Humite is found as a relatively rare mineral in contact-marbled limestones.
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