摘要
翡翠是最珍贵的玉石品种，但至今未在中国找到矿床。缅甸、哈萨克斯坦等国的翡翠矿床特征表明：（1）所有翡翠矿床均产在蛇绿岩套中的超镁铁岩中；（2）蛇绿岩套附近有蓝闪石片岩相伴产出；（3）其构造环境为两古板块之间的缝合带；（4）翡翠的原岩为呈脉状、透镜状产于超镁铁岩中的钠长岩等。中国雅鲁藏布江流域、祁连山脉等地带存在类似的地质条件，有找到翡翠矿床的可能。
Jadeite is the most precious jade. Any jadeite deposit has not been found in China up to now.Features of the jadeite deposits in Myanms and Kazakhstan etc. show, (1) all of the jadeite deposits occure in ultramafic rocks which belong to ophiolites, (2) thete are glaucophane schists near the ophiolites, (3) the tectonic setting of all of the jadeite deposits are suture zone between two ancient continent plates, (4) the primary rocks of jadeite are mainly albitites which occured in ultramafic rocks in the shapes of lens or vein. Thereare similar geological conditions in Yaluzangbu River Valley and Qilian Mountain of China,and it is possibleto find jadeite deposits in ultramafic rocks in these zones.
