Cubanite is a copper iron sulfide mineral that commonly occurs as a minor alteration mineral in magmatic sulfide deposits. It has the chemical formula CuFe 2 S 3 and when found, it has a bronze to brass-yellow appearance. On the Mohs hardness scale, cubanite falls between 3.5 and 4 and has a orthorhombic crystal system. [2]

Named for the country of Cuba, which includes the type locality. Very sensitive to temperature, pressure and compositional variations. When heated between 200 and 210°C, cubanite transforms irreversibly to isocubanite (Cabri et al. 1973; see also Sawada et al., 1962; Yund & Kullerud, 1966; Fleet, 1970; Dutrizac, 1976).

Cubanite. Comments: Brassy, lustrous, cyclic-twinned cubanite on matrix. Location: Henderson # 2 Mine, Chibougamau, Quebec, Canada. Scale: 10x6 mm. © Tom Loomis / Dakota Matrix

Cubanite may exsolve from chalcopyrite below about 200 C–210 C. A rare constituent of some carbonaceous chondrite meteorites. Chalcopyrite, pyrite, pyrrhotite, pentlandite, sphalerite. Distribution: Numerous localities; may be an important ore mineral. From Barracanao, Cuba [TL]. In the USA, at Fierro, Grant Co.,

2023年7月13日 · This chapter describes Cubanite (abbrv. cub), as seen with optical, reflected light microscopy. Compositional data, main properties and optical parameters are first summarized (introductory table and preliminary remarks).

古巴石（Cubanite）是采集于加佐郡的岩石标本。 [1] 铜黄色，板状集合体，金属光泽，不透明，硬度：2.97，密度：4.03-4.169，一组完全解理，断口：贝壳断口。 [1] 古巴 …

A truly remarkable specimen with rich coverage of twinned cubanites, including that wonderful, 1.2 cm cyclic twin sitting front and center, all on crystallized and contrasting calcite matrix! Large cubanite specimens are godawfully rare and the pieces from this mine set the standard. However, good specimens are usually just miniatures or ...

Cubanite (also known as "chalmersite") is a rare copper mineral that does not contribute much to the supply of copper. It would not even be considered an ore of copper except that it is often interbedded with other ores of copper and so it does contribute some copper when these other ores, such as chalcopyrite , are processed.

cubanite 方黄铜矿是一种铜和铁的硫化物矿物，它们通常黄铜矿或磁黄铁矿产在一起。 具有金属光泽，黄色或古铜黄色。

Cubanite (Cubanite). Cubanite是一種銅，鐵和硫的黃色礦物CuFe2S3。最早在1843年對古巴人進行了描述，原因是它發生在古巴東方省的Mayarí-Baracoa地帶。在高溫水熱礦床中，與黃鐵礦和黃銅礦共生時，產生了長晶石。它是由溫度低於200至210°C的黃銅礦析出的結果。