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People who have experience with pyrite and marcasite hand specimens can often tell them apart solely on the basis of their color or tarnish. However, crystal form, if observable, provides a conclusive separation. The streak of pyrite can be slightly greenish while marcasite is a pure gray.
Marcasite mineral is a metastable iron sulphide, α-FeS2, less known and less abundant than pyrite β-FeS2. Their chemical compositions are similar, formed by S2 2- dimers and Fe2+ …
Marcasite mineral is a metastable iron sulphide, α-FeS2, less known and less abundant than pyrite β-FeS2. Their chemical compositions are similar, formed by S2 2- dimers and Fe2+ species, but...
Marcasite is a fascinating mineral often mistaken for pyrite due to its similar appearance. However, it has unique properties and uses that set it apart. This mineral, composed of iron sulfide, forms in a variety of crystal shapes and colors, making it a …
Marcasite is a fascinating mineral often mistaken for pyrite due to its similar appearance. However, it has unique properties and uses that set it apart. This mineral, composed of iron …
Marcasite is the most prevalent mineral to experience a condition known as pyrite decay, in which a specimen will slowly disintegrate into a white powder. Little is known about this detrimental …
It has been shown that the magnetic susceptibility of the iron-containing sulfide minerals, arsenopyrite, chalcopyrite, and marcasite can be enhanced by oxidative alkaline …
Marcasite. Comments: Metallic, brassy-colored marcasite with minor translucent quartz and white dolomite. Location: Panasqueira (3rd level), in the region of Beira Baixa, Portugal. Scale: 8 x 5.5 cm. © Fabre Minerals
It has been shown that the magnetic susceptibility of the iron-containing sulfide minerals, arsenopyrite, chalcopyrite, and marcasite can be enhanced by oxidative alkaline pressure leaching in a similar manner to pyrite.
Marcasite, the orthorhombic dimorph of FeS 2m, is unstable with respect to pyrite and is therefore a metastable iron sulfide. There has been some discussion as to whether or not marcasite is …
The mineral marcasite, sometimes called white iron pyrite, is iron sulfide (FeS 2) with orthorhombic crystal structure. It is physically and crystallographically distinct from pyrite, which is iron sulfide with cubic crystal …
Marcasite is a common example of a primary or secondary mineral formed under low-temperature acidic conditions. As a primary mineral, it readily forms nodules, concretions or sharply defined crystals or crystal clusters in a variety of sedimentary environments.
People who have experience with pyrite and marcasite hand specimens can often tell them apart solely on the basis of their color or tarnish. However, crystal form, if observable, provides a conclusive separation. The streak of pyrite can be …
Mineral Group: Marcasite group. Occurrence: Typically formed under low-temperature highly acidic conditions, both in sedimentary environments (shales, limestones, and low rank coals) …
The mineral marcasite, sometimes called white iron pyrite, is iron sulfide (FeS 2) with orthorhombic crystal structure. It is physically and crystallographically distinct from pyrite, which is iron sulfide with cubic crystal structure.
Marcasite, the orthorhombic dimorph of FeS 2m, is unstable with respect to pyrite and is therefore a metastable iron sulfide. There has been some discussion as to whether or not marcasite is formed during normal sedimentation.
Marcasite. Comments: Metallic, brassy-colored marcasite with minor translucent quartz and white dolomite. Location: Panasqueira (3rd level), in the region of Beira Baixa, Portugal. Scale: 8 x …
Marcasite is a common example of a primary or secondary mineral formed under low-temperature acidic conditions. As a primary mineral, it readily forms nodules, concretions or sharply defined crystals or crystal …
Mineral Group: Marcasite group. Occurrence: Typically formed under low-temperature highly acidic conditions, both in sedimentary environments (shales, limestones, and low rank coals) and in hydrothermal veins formed by ascending solutions. Association: Pyrite, pyrrhotite, galena, sphalerite, fluorite, dolomite, calcite.
Marcasite is the most prevalent mineral to experience a condition known as pyrite decay, in which a specimen will slowly disintegrate into a white powder. Little is known about this detrimental condition. It only effects certain specimens at random, while other specimens remain unaffected.