Pharmacosiderite

（重定向自Cube ore）

Pharmacosiderite is a hydrated basic ferric arsenate, with chemical formula KFe₄(AsO₄)₃(OH)₄·(6-7)H₂O and a molecular weight of 873.38 g/mol. It consists of the elements arsenic, iron, hydrogen, potassium, sodium and oxygen. It has a Mohs hardness of 2 to 3, about that of a finger nail. Its specific gravity is about 2.7 to 2.9, has indistinct cleavage, and is usually transparent or translucent. It has a yellow or white streak and a yellow, green, brown or red color. Its lustre is adamantine, vitreous and resinous, and it has conchoidal, brittle and sectile fracture.

单词	Cube ore
释义	Cube ore 英语百科 Pharmacosiderite （重定向自Cube ore） Pharmacosiderite is a hydrated basic ferric arsenate, with chemical formula KFe₄(AsO₄)₃(OH)₄·(6-7)H₂O and a molecular weight of 873.38 g/mol. It consists of the elements arsenic, iron, hydrogen, potassium, sodium and oxygen. It has a Mohs hardness of 2 to 3, about that of a finger nail. Its specific gravity is about 2.7 to 2.9, has indistinct cleavage, and is usually transparent or translucent. It has a yellow or white streak and a yellow, green, brown or red color. Its lustre is adamantine, vitreous and resinous, and it has conchoidal, brittle and sectile fracture.
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