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银矿的鉴定

Release date:2018-12-21  source:中南选矿网  Browse times:49
矿的鉴定:矿物中含有六种银矿物即银黝矿、自然银、螺状硫银矿、硫铜银矿、浓红银矿及黑硫银矿等。从含量上看。该地区主要银矿物为银黝铜矿,含量占78.47%,次要银矿物为自然银及螺状硫银矿。含量分别为12.9%和9.39%。其它银矿物硫锑铜银矿、浓红银矿、黑硫银锡矿含量甚少。银矿物浸染特性为以粗粒为主。粗细粒不均匀嵌布。银矿物在脉石与闪矿间多,占56.60%,在脉石、方矿与脉石间次之,分别占27.79%、12.87%,其它矿物中含量很少。银矿物形态有粒状、麦粒状、叶片状、细脉状银矿物产出特征。银黝铜矿:在矿石中分布比较普遍,是该地区主要银矿物,含量占银矿物相对量的78.47%。多以他形晶不规则形态产出在脉石当中,有部分银黝铜矿在脉石中与闪锌矿与黄矿伴生并形成连晶;自然银:在矿石中含量仅次于银黝铜矿,同样是该地区主要银矿物之一,分布均匀。—般以细小粒状和不规则状产出在脉石当中;螺状硫银矿:在矿石中分布不均,从银矿物相对量看,占银矿物的9.39%,仅次于银黝铜矿和自然银,在矿石中主要以不规则的细小片状和粒状集合体产出在脉石当中,有设少量螺状硫银矿呈粒状分布在黄铁矿中,二者形成连;硫锑铜银矿:在矿石中含量较少。多呈不规则粒状产出在脉石中;黑硫银锡矿:在矿石中含量极少,呈他形晶粒状产出在银黝铜矿与脉石矿物间隙处;浓红银矿:在矿石中含量极微小。呈细小粒状产出在脉石中。银矿的选矿回收多用浮选和氰化工艺回收。

 
 
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