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晶粒状晶质铀矿在自然界分布较广,在岩浆铀矿床、伟晶岩型铀矿床以及花岗岩、碱性岩副矿物中都有产出,但晶粒一般都很细小(大多在1 mm以下)。热液矿床中铀一般呈胶状的沥青铀矿形式产出,偶尔以显晶质的晶质铀矿形式产出者,晶粒也很细小,且晶型极不完整。笔者近期在四川米易海塔地区产于混合岩化片岩的石英脉中发现了大量稠密分布的巨粒状晶质铀矿,其粒径达0.n~1 cm,且晶型完好,具有极高的科学研究价值。本文对富晶质铀矿石英脉中的包裹体进行岩相学、测温分析,
Grains of crystalline uranium ore widely distributed in nature, in magmatic uranium deposits, pegmatite-type uranium deposits and granite, alkaline rock minerals are produced, but the grains are generally very small (mostly in the 1 mm the following). Uranium is generally produced in the form of colloidal pitch uranium in hydrothermal deposits, occasionally in the form of crystalline crystalline uranium, and the grains are also very small and the crystal form is extremely incomplete. The author recently discovered a large number of densely distributed macronutrient uraninite deposits in the quartz veins of migmatitic schists in the Miyihaita area, Sichuan, with a grain size of 0.n ~ 1 cm and good crystal form High value of scientific research. In this paper, the inclusions in the quartz vein of the enriched uranium ore are studied by petrography,