【摘要】 <正>铁的碳酸盐矿物主要指菱铁矿（FeCO₃）由于FeCO₃与MnCO₃和MgCO₃能形成完全类质同象系列;与CaCO₃形成不完全类质同象系列,所以菱铁矿中经常含有Mn、Mg、Ca类质同象混入物,形成变种:锰菱铁矿,镁菱铁矿,钙菱铁矿以及含铁的锰镁碳酸盐矿。其次是指由于CaMg[CO₃]₂（白云石）～CaFe[CO₃]₂形成完全类质同象系列的镁铁白云石[CaCO₃·（Mg·Fe）CO₃],当Fe>Mg时称铁白云石。更多还原

【Abstract】 The advance of solvents for selective dissolution of ferro-carbonate minerals is discribed in this paper. Investigation showed that three solutions, 10%A1C13 · 6H2O, 10%A1C13 · 6H2O-0.5% NaHCO3 and 30% NH4C1-0.25% 1,10 phenanthroline, are proper. The dissolutions of siderite, sid-erodot and ankerite are over 97% completely. These solvents dissolve chlorite less than 6%, and greenalite, biotite, amphibole and garnet less than 2%. Hematite, lirnonite, specularite, magnetite and pyrite are hardly dissolved. The selectivity of the three solvents is good, and the procedures are simple with satisfactory results.更多还原