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Manganoan calcite

In the Se-type gangue minerals comprise quartz, adularia, illite/smectite inter-stratified mixed layer clay mineral, smectite, calcite, Mn carbonates (manganoan calcite, rhodochrosite), Mn silicates (inesite, johansenite) and Ca silicates (xonotlite, truscottite). In comparison, the Te-type contains fine-grained, chalcedonic quartz, sericite, barite, adularia and chlorite/smectite interstratified mixed layer clay mineral. Carbonates and Mn minerals are very poor in the Te-type and they do not coexist with Te minerals. Carbonates are abundant and barite is absent in the Se-type. Grain size of quartz in the Te-type is very fine, while large quartz crystals are common in the Se-type. [Pg.166]

Main gangue minerals of the Se-type deposits comprise quartz, adularia, illite/ smectite interstratified mixed layer clay mineral, chlorite/smectite interstratified mixed layer clay mineral, smectite, calcite, Mn-carbonates, manganoan caleite, rhodoehrosite, Mn-silicates (inesite, johannsenite) and Ca-silicates (xonotlite, truscottite). [Pg.98]

See other pages where Manganoan calcite is mentioned: [Pg.593]    [Pg.487]    [Pg.35]    [Pg.95]    [Pg.149]    [Pg.593]    [Pg.103]    [Pg.35]    [Pg.126]    [Pg.593]    [Pg.487]    [Pg.35]    [Pg.95]    [Pg.149]    [Pg.593]    [Pg.103]    [Pg.35]    [Pg.126]    [Pg.44]    [Pg.365]    [Pg.294]   
See also in sourсe #XX -- [ Pg.35 ]



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