岩石矿物学杂志2025，Vol.44Issue(4)：981-994,14.DOI:10.20086/j.cnki.yskw.2025.4122
高品质危地马拉绿色翡翠岩石矿物学特征及其产地标型
Petromineralogy and typomorphic characteristics of high-quality Guatemalan green jadeite jade
摘要
Abstract
The newly discovered high-quality green jadeite in Guatemala is comparable to the high-end green jadeite from Myanmar,gradually becoming an important source of high-quality green jadeite jewelry materials in the domestic jewelry market.However,research on its petromineralogy and typomorphic characteristics remains rela-tively weak.This study selects a large number of Guatemalan high-quality green jadeite materials and jewelry that have appeared in the Chinese market as research subjects.Through microscopic observation,laser Raman spectros-copy,EMPA,and other testing methods,a systematic analysis of their mineral assemblages and compositional characteristics was conducted.The research findings indicate that the high-quality Guatemalan green"Mayan Green"jadeite materials appearing in the market are primarily composed of omphacite minerals,with secondary minerals including phlogopite,phengite,zoisite.Omphacite can be classified into three different formation stages,Omp-Ⅰ,Ⅱ,and Ⅲ,based on its mineral assemblages and their interrelationships.Among them,the high-quality Guatemalan green jadeite jewelry are mainly composed of omphacite formed in the Omp-Ⅲ stage,characterized by relatively low Mg(average 7.59％)and Fe(average 1.57％)contents,relatively high Cr content(average 0.24％),and a jadeite component Xjd＞0.5(average 0.53).Existing research indicates that the jadeites in differ-ent segments of the Motagua Fault System in Guatemala possess distinct mineral assemblages.However,the high-quality green jadeite jewellerys studied in this paper exhibit a relatively uniform mineral composition in the domestic market,primarily composed of pure omphacite.They may contain two specific metal mineral inclusions,chalcocite and nickeline.The endmember composition and mineralogical characteristics show significant differences compared to other sources of high-quality green jadeite,enabling effective differentiation between high-quality Guatemalan green jadeite,traditional Myanmar green jadeite,and high-quality green jadeite from other origins by providing es-sential reference characteristics in petrology and mineralogy.关键词
翡翠/绿辉石/岩石矿物学/产地标型/危地马拉Key words
jadeite/omphacite/petromineralogy/typomorphic characteristics/Guatemala分类
天文与地球科学引用本文复制引用
邓子旭,彭雨帆,骆郑臣,丘志力,陈松军,杨炯,侯舜瑜,陈珊,徐志,张跃峰..高品质危地马拉绿色翡翠岩石矿物学特征及其产地标型[J].岩石矿物学杂志,2025,44(4):981-994,14.基金项目
国家自然科学基金项目(41673032,42073008) （41673032,42073008）
中山大学科研基金项目(71020025) （71020025）
泰山学院科研基金项目(2022HX453) National Natural Science Foundation of China(41673032,42073008) （2022HX453）
Sun Yat-sen University Sci-entific Research Fund Project(71020025) （71020025）
Taishan University Scientific Research Fund Project(2022HX453) （2022HX453）
