marcasite

/mahr-kuh-sahyt/US // ˈmɑr kəˌsaɪt //UK // (ˈmɑːkəˌsaɪt) //

玛卡石,玛卡西特

Definitions

n.名词 noun

1
- : Also called white iron pyrites . a common mineral, iron disulfide, FeS2, chemically similar to pyrite but crystallizing in the orthorhombic system.
- : any of the crystallized forms of iron pyrites, much used in the 18th century for ornaments.
- : a specimen or ornament of this substance.

Instead, Lagerfeld explored the darkness of malachite, iron ore, and marcasite.
As neat a shape as you would see in a day's journey, with the prettiest color, and eyes as bright as those marcasite buttons!
Marcasite is thus the less stable of the two modifications of iron disulphide.
It is a noteworthy fact that whilst pyrites has been prepared artificially, marcasite has not.
Marcasite occurs under the same conditions as pyrites, but is much less common.
Yellow sulphuret of iron, commonly called Marcasite, or Martial pyrites.