| 王成,田江涛,王永志,刘超,李涛,曹勇华.综合物探在铜镍矿勘查中的应用研究——以喀喇昆仑黑石梁科马提岩为例[J].矿产勘查,2025,16(11):2443-2453 |
| 综合物探在铜镍矿勘查中的应用研究——以喀喇昆仑黑石梁科马提岩为例 |
| The application of integrated geophysical exploration in the investigation of copper-nickel deposits: A case study of the Karamertyang komatiite in the Karakoram |
| 投稿时间：2024-05-27 |
| DOI：10.20008/j.kckc.202511005 |
| 中文关键词: 科马提岩 铜镍矿 地球物理 黑石梁 喀喇昆仑 |
| 英文关键词: komatiite copper-nickel ore geophysical Heishiliang Karakoram |
| 基金项目:本文受喀喇昆仑地区幔源岩浆活动动力学过程及其成矿效应(2022D01A289)、中-巴经济走廊铜稀有等战略矿产资源成矿预测与潜力评价(2022A03010-4)、天山—阿尔泰成矿带斑岩-浅成低温热液型铜金矿成矿机制与成矿规律研究(2024B03009)联合资助。 |
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| 中文摘要: |
| 针对喀喇昆仑黑石梁一带新发现的科马提岩进行了岩石学、岩石矿物学研究和高精度地球物理探测。结果显示，黑石梁科马提岩可划分出 5个火山旋回、2个火山韵律、4个火山岩相，主体由玻基辉橄岩、玄武岩和玄武质火山碎屑岩组成，在多层玻基辉橄岩见黄铜矿、镍黄铁矿、斑铜矿等典型铜镍矿成矿矿物，成矿潜力较好。玻基辉橄岩中斑晶橄榄石，MgO含量为 43.34%～46.15%，平均值 44.78%；TFeO含量为 |
| 英文摘要: |
| Petrological and petrographic studies, as well as high-precision geophysical exploration, were con.ducted on the newly discovered komatiites in the Heishiliang area of the Karakoram. The results show that theHeishiliang komatiites can be divided into 5 volcanic cycles, 2 volcanic rhythms, and 4 volcanic facies. The main li.thologies consist of glassy peridotite, basalt, and basaltic volcanic clastic rocks. In the multilayered glassy perido.tite, typical copper-nickel ore-forming minerals such as chalcopyrite, pentlandite, and bornite are observed, indi.cating good metallogenic potential. The spot olivine in the glassy peridotite has an MgO content of 43.34%-46.15%,with an average of 44.78%; TFeO content of 12.21%-14.42%, with an average of 13.27%; and a Fo value of 84.24-86.73, with an average of 86.59, belonging to the precious olivine. The Ni content in the olivine is 699×10-6-2381× 10-6, showing significant Ni loss and having undergone crystallization and melting separation processes, which isconducive to copper-nickel mineralization. The glassy peridotite has higher magnetization and polarization rates, al.lowing for effective differentiation from the surrounding rock formations. A 1∶10000 high-precision magnetic surveyidentified three magnetic anomalies, with the M-1 anomaly considered to be caused by a concealed rock body be.neath the ground, locally enriching magnetic bodies and being a favorable area for copper-nickel mineralization.Four concealed faults are inferred, which may be channels for magma migration. Based on the study of typicalKomatiite-type copper-nickel ore deposits and combined with the mineralization characteristics of Komatiite in thestudy area, a "trinity" prospecting prediction geological model has been established, and targeted technical methodcombinations have been proposed, providing support for the next exploration phase in the region. |
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