湖南柿竹园钨多金属矿床中的锰质矽卡岩

柿竹园钨金属矿床中锰质矽－卡岩由锰铝榴石，铁铝－锰铝质榴石，蔷薇辉石，锰橄榄石，日光榴石，硫锰矿，含锰次透辉石，富锰金云母和菱锰矿组成。其生成于钙质矽卡岩的退化蚀变之后，与云英岩钨多金属矿化有着密切的时空关系。从近接触带到远接触带，锰质矽卡岩矿物组合及各种锰质矿物中的锰含量均逐渐上升。

Manganoan skarn in the Shizhuyuan polymetallic tungsten deposit, Hunan province

A manganoan skarn in the Shizhuytran supergiant W-Sn-Mo-Bi-Be deposit is studied in the present paper. It consists of spessartine,almandinic-spessarti- nic garnet,rhodonite,tephroite,helvite,alabandine,Mn-bearing salite,Mn-richhedenbergite,Mn-rich phlogopite and rhodochrosite and spacio-temporally de-velops together with the greisenization and relevant mineralizations aftercalcic skarnization and retrograde alterafion. From proximal to distal contactzones,its mineral assemblages become increasingly complicated and the manga-nese content of their various minerals is getting higher and higher. Thecomplicated mineral assemblages of the mallganoan skarn and their spacio-temporal distribution apparently prove the evolutional direction of the skarnin the Shizhuyuan polymetallic tungsten deposit.