次要矿物（auxiliary mineral,minor mineral） 火成岩中含量较少,对分类定名不起主要作用,但可作为确定岩石种属依据的矿物。如闪长岩中的石英,可有可无,并不影响岩石的命名。如含一定数量（5%~20%）时,则称为石英闪长岩
主要组成矿物有斜长石、黝帘石、角闪石、另有云母类矿物、榍石、葡萄石等次要矿物。
The main minerals are plagioclase, zoisite, hornblende, and the minor minerals were mica, sphene, prehnite and so on.
长石矿物特别是钠长石作为翡翠的常见次要矿物，与硬玉矿物之间存在着密切的关系。
As a common secondary mineral, feldspar minerals, especially albite, have Shared a close relationship with jadeite minerals.
主要组成矿物有斜长石、黝帘石、角闪石、另有云母类矿物、榍石、葡萄石、方解石、电气石等次要矿物；
The main minerals are plagioclase, zoisite, hornblende , and the minor minerals were mica, sphene, prehnite, tourmaline and so on.
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