The Hongniu Cu deposit in "Sanjiang Metallogenetic Zone" is occurred in the skarnization alteration zone in the margin of marble and the hornfels body.

“三江带”内的红牛铜,赋存于大理矽卡化蚀变带角体中。

Apart from magnetite and almandine garnet, the skarn also contains these minerals: idocrase, actinolite, epidote, fluorite and andradite (another garnet mineral).

主要构除磁铁和铁铝榴石外，矽卡尚有其他如符山石，阳起石，绿帘石，萤石钙铁榴石。