Efremovite

Efremovite is a rare ammonium sulfate mineral with the chemical formula: (NH₄)₂Mg₂(SO₄)₃. It is a white to gray cubic mineral. This anhydrous sulfate occurs as constituent in sulfate crusts of burning coal dumps. It is hygroscopic and when exposed to humid air it slowly converts to the hydrate form, boussingaultite.

单词	Efremovite
释义	Efremovite 英语百科 Efremovite Efremovite is a rare ammonium sulfate mineral with the chemical formula: (NH₄)₂Mg₂(SO₄)₃. It is a white to gray cubic mineral. This anhydrous sulfate occurs as constituent in sulfate crusts of burning coal dumps. It is hygroscopic and when exposed to humid air it slowly converts to the hydrate form, boussingaultite.
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