Search results
Results from the WOW.Com Content Network
The mineral pyrite (/ ˈ p aɪ r aɪ t / PY-ryte), [6] or iron pyrite, also known as fool's gold, is an iron sulfide with the chemical formula Fe S 2 (iron (II) disulfide). Pyrite is the most abundant sulfide mineral .
Sulfide mineral, pyrite group: Formula (repeating unit) MnS 2: IMA symbol: Hr [1] Strunz classification: 2.EB.05a: Crystal system: Cubic: Crystal class: Diploidal (m 3) H–M symbol: (2/m 3) Space group: Pa 3: Unit cell: a = 6.107 Å; Z = 4: Identification; Formula mass: 119.07 g/mol: Color: Reddish brown or brownish black: Crystal habit ...
Formula (repeating unit) FeS 2: IMA symbol: Mrc [1] Strunz classification: 2.EB.10a: ... This disintegration of marcasite in mineral collections is known as "pyrite ...
Erlichmanite is the naturally occurring mineral form of osmium sulfide (OsS 2).It is grey with a metallic luster, hardness around 5, and specific gravity about 9. [2] It is found in noble metal placer deposits. [3]
Sperrylite on chalcopyrite with magnetite, Oktyabersky Mine, Norilsk.Field of view 2.2 cm. Sperrylite is a platinum arsenide mineral with the chemical formula PtAs 2 and is an opaque metallic tin white mineral which crystallizes in the isometric system with the pyrite group structure.
Slavíkite (IMA symbol: Sví [1]) is a mineral consisting of a hydrous basic magnesium ferric sulfate with the chemical formula (H 3 O +) 3 Mg 6 Fe 15 (SO 4) 21 (OH) 18 ·98H 2 O and is an oxidation product of pyrite in shales and slate from Bohemia. [2]
Formula (repeating unit) Ag 3 CuS 2: IMA symbol ... Jalpaite is a rare copper silver sulfide mineral with formula Ag 3 ... galena, sphalerite, pyrite, chalcopyrite ...
The type of bonds found in the Pyrite group is covalent, but not in penroseite. For example, pyrite FeS 2, which has the same structure as penroseite and is thought to have similar coordination, has one Fe atom surrounded by six atoms of S, an octahedral coordination. On the other hand, the S atom is surrounded by 4 Fe atoms in a tetrahedral ...