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Leightonite
Leightonite is a rare sulfate mineral with formula of K2Ca2Cu(SO4)4•2H2O.〔 ==Crystal class== Leightonite forms flattened to elongated bladed crystals of variously interpreted crystal structure. It’s crystal system is reported as triclinic morphologically, but also as pseudo-orthorhombic due to intricate lamellar twinning that mimics orthorhombic symmetry. 〔〔 Because it is triclinic, the crystal is represented by a system of three unequal vectors with corresponding unequal angles between them.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Leightonite」の詳細全文を読む
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