Stannoidite
(repeating unit)Cu6+Cu22+(Fe2+,Zn)3Sn2S12 IMA symbol Sta[1] Strunz classification 2.CB.15c Crystal system Orthorhombic Crystal class Disphenoidal (222)
H-M symbol: (2 2 2) Space group I222 (No. 23) Unit cell a = 10.76 Å, b = 5.4 Å
c = 16.09 Å, Z = 2 Identification Color Brass brown Crystal habit Uniformly indistinguishable crystals forming large masses Cleavage None Fracture Conchoidal – uneven Mohs scale hardness 4 Luster Metallic Streak Brown gray Diaphaneity Opaque Specific gravity 4.29 References [2][3][4]
H-M symbol: (2 2 2)
c = 16.09 Å, Z = 2
Stannoidite is a sulfide mineral composed of five chemical elements: copper, iron, zinc, tin and sulfur. Its name originates from Latin stannum (tin) and Greek eides (or Latin oïda meaning "like"). The mineral is found in hydrothermal Cu-Sn deposits.[2][3]
Stannoidite was first described in 1969 for an occurrence in the Konjo mine, Okayama prefecture, Honshu Island, Japan.[3]
See also
References
Wikimedia Commons has media related to Stannoidite.
- ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
- ^ a b Stannoidite. Webmineral
- ^ a b c Stannoidite. Mindat.org
- ^ Kudoh Y., Takeuchi Y. (1976). "The superstructure of stannoidite". Zeitschrift für Kristallographie – Crystalline Materials. 144 (1–6): 145–160. Bibcode:1976ZK....144..145K. doi:10.1524/zkri.1976.144.16.145. S2CID 201808201.
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