stannite वाक्य
उदाहरण वाक्य
मोबाइल
- Sodium stannite is used as a stabiliser for hydrogen peroxide.
- Chatkalite is anisotropic which is characteristic of the stannite group.
- Stannite and kesterite occur together in the Ivigtut cryolite deposit of South Greenland.
- Other forms of tin ores are less abundant sulfides such as stannite that require a more involved smelting process.
- Some literature reports have identified CZTS in the related stannite structure, but conditions under which a stannite structure may occur are not yet clear.
- Some literature reports have identified CZTS in the related stannite structure, but conditions under which a stannite structure may occur are not yet clear.
- First-principle calculations show that the crystal energy is only 2.86 meV / atom higher for the stannite than kesterite structure suggesting that both forms can coexist.
- The oxides of tin in its preferred oxidation state of + 2, namely SnO and Sn ( OH ) 2, are amphoteric; it forms stannites in strongly basic solutions.
- It occurs in association with attakolite, svanbergite, lazulite, hematite, trolleite, berlinite, rutile, pyrophyllite, baryte, arsenopyrite, stannite, pyrite, andorite, cassiterite and zinkenite.
- Solid solution was found to exist between Cu 2 FeSnS 4 and Cu 2 ZnSnS 4 at temperatures above 680 �C . This accounts for the exsolved kesterite in stannite found in the cryolite.
- Cassiterite ( SnO 2 ) is the only commercially important source of tin, although small quantities of tin are recovered from complex sulfides such as stannite, cylindrite, franckeite, canfieldite, and teallite.
- It occurred in weathered material with colorless transparent cassiterite [ SnO 2 ], which is thought to have been derived from the oxidation of stannite [ Cu 2 ( Fe, Zn ) SnS 4 ].
- If alkali is added to a solution of SnCl 2, a white precipitate of hydrated tin ( II ) oxide forms initially; this then dissolves in excess base to form a stannite salt such as sodium stannite:
- If alkali is added to a solution of SnCl 2, a white precipitate of hydrated tin ( II ) oxide forms initially; this then dissolves in excess base to form a stannite salt such as sodium stannite:
- 85-90 % of tin is presented by cassiterite, mainly quartz associated and is concentrated in lower structural floor Jurassic sandstone and shale : Cassiterite in developed sulphide mineralization in upper floor of cretaceous volcanites is corroded by sulphides forming stannite and hydro-stannite .-showing vertical zonation in the distribution of mineral assemblages that form ore bodies.
- 85-90 % of tin is presented by cassiterite, mainly quartz associated and is concentrated in lower structural floor Jurassic sandstone and shale : Cassiterite in developed sulphide mineralization in upper floor of cretaceous volcanites is corroded by sulphides forming stannite and hydro-stannite .-showing vertical zonation in the distribution of mineral assemblages that form ore bodies.
- The most common minerals in ore-bearing associations of volcanogenic massive sulfide deposits deposits ( non-metamorphosed or oxidized ) and their modern analogues are pyrite, pyrrhotite, chalcopyrite, covellite, sphalerite, galena, tetrahedrite-tennantite, marcasite, realgar, orpiment, proustite-pyrargyrite, wurtzite, stannite ( carbonates ) quartz and native gold, and are differently distributed in the various associations schematized above.
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