四川省510铀矿床中铀及伴生元素的分带特征

doi:10.11720/wtyht.2023.1264

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摘要

四川省510铀矿床伴生元素的研究多为单一矿段,为划分整个矿床的伴生资源类型,本次采用铀矿石伴生元素横向及垂向分带研究的方法,结合矿床已有的岩石地球化学、矿床地球化学、成矿规律等研究成果进行综合对比分析,梳理整个矿床伴生矿产的分带特征,将矿床在垂向上划分为铁镍硫化物—铀矿化带、少硫化物—铀矿化带和闪锌矿—少铁镍硫化物—铀矿化带3个矿物组合带,在横向上划分为上部Ni、V→Zn→Ni(少量Cu)和下部Mo、Ni、Zn、V→Zn、Ni→Mo、Ni、Zn→Zn(少量Cu)的成矿元素组合过渡带。矿床中铀与伴生钼、镍和锌等金属已完成冶炼及回收实验,增加了矿床的经济价值,扩大了经济效益。本次研究确定了510铀矿床6种伴生资源类型,对伴生元素的利用进行了综合评价,为深部找矿预测及相似矿山接替资源找矿方向提供了理论指导。

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	王永飞
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关键词 ：共伴生铀资源, 510铀矿床, 分带特征, 矿床分带特征, 矿床利用远景

Abstract：

Previous studies of associated elements of the No. 510 uranium deposit in Sichuan mostly focus on individual ore blocks. To classify the types of associated resources in the whole deposit, this study conducted a comprehensive comparative analysis based on the investigation of horizontal and vertical zoning of associated elements of uranium ores, as well as the existing study results of rock and deposit geochemistry and metallogenic regularity. Accordingly, this study ascertained the zoning characteristics of associated minerals in the whole deposit. In the vertical direction, the deposit was divided into three mineral assemblage zones: the iron-nickel sulfide-uranium mineralization zone, the low-content sulfide-uranium mineralization zone, and the sphalerite-low-content iron-nickel sulfide-uranium mineralization zone. In the horizontal direction, the deposit was divided into the upper Ni, V → Zn → Ni (low-content Cu) and the lower Mo, Ni, Zn, V → Zn, Ni → Mo, Ni, Zn → Zn (low-content Cu) metallogenic element assemblage transition zones. The smelting and recovery experiments were completed for uranium and associated metals such as molybdenum, nickel, and zinc in the deposit, increasing the economic value of the deposit and expanding economic benefits. This study determined six types of associated resources for the No. 510 uranium deposit and comprehensively evaluated the utilization of associated elements, providing theoretical guidance for both the deep prospecting prediction and the prospecting of replacement resources in similar mines.

Key words： uranium associated resource 510 uranium deposit zoning characteristics deposit zoning characteristics deposit utilization prospect

收稿日期: 2022-05-26 修回日期: 2023-01-17 出版日期: 2023-08-20

ZTFLH:

P632

基金资助:四川省2021年政府性投资地质勘查项目(川自然资函)(〔2021〕554号);四川省2021年政府性投资地质勘查项目(川自然资函)(〔2022〕324号);四川省地质调查研究院科技创新项目(川地调院)(〔2022〕262号)

作者简介: 王永飞(1982-),男,本科,高级工程师,主要从事铀矿勘查和矿床地质研究工作。Email:370759859@qq.com。

引用本文:

王永飞, 董之凯, 吕文祥, 李宝新, 马冰. 四川省510铀矿床中铀及伴生元素的分带特征[J]. 物探与化探, 2023, 47(4): 881-891.
WANG Yong-Fei, DONG Zhi-Kai, LYU Wen-Xiang, LI Bao-Xin, MA Bing. Zoning characteristics of uranium and associated elements in the No. 510 uranium deposit, Sichuan. Geophysical and Geochemical Exploration, 2023, 47(4): 881-891.

链接本文:

https://www.wutanyuhuatan.com/CN/10.11720/wtyht.2023.1264 或 https://www.wutanyuhuatan.com/CN/Y2023/V47/I4/881

Fig.1 510铀矿床地质略图(修改自陈田华等^[8])
1—第四系;2—拉垅组下段;3—塔尔组上段;4—塔尔组下段;5—羊肠沟组上段;6—羊肠沟组下段;7—苏里木塘组上段;8—苏里木塘组下段;9—地层界线;10—实测及推测断层;11—脉岩(μ—玢岩类;sl—板岩;si—硅质岩;Dm—白云岩);12—铀矿床;13—钻孔及编号;14—取样位置及编号

Fig.2 510铀矿床中长沟矿段三中段(3 478.61 m)矿体分布(修改自陈田华等^[8])
1—塔尔组下段;2—羊肠沟组上段;3—羊肠沟组下段;4—灰岩;5—板岩;6—硅质岩;7—细砂岩;8—逆断层;9—平推断层;10—勘探线位置及编号;11—平铜;12—钻孔及编号;13—工业铀矿体

Table 1 雪莲沟、向阳西沟、向阳东沟矿段矿体及围岩部分微量元素含量

样品编号									备注
R0-5	160	450	84.5	235	226	562	露天采场	3562	中长沟矿段^[17]
R2-4	65.8	2730	41.6	325	43.7	5587	2中段	3522
R2-6	11982	188887	383	220	60.7	9010	2中段	3522
R2-7	2993	154632	38.4	288	33.3	10375	2中段	3522
R2-8	322	12117	21.9	137	17.2	379	2中段	3522
R3-1	116	1677	103	747	110	464	3中段	3482
R3-6	168	2065	133	612	289	18644	3中段	3482
R3-7	44.9	375	9.73	130	22.4	542	3中段	3482
R3-8	817	4717	12.5	1282	68	3792	3中段	3482
R4-1	916	9821	55.8	212	31.2	574	4中段	3442
R4-3	1926	7238	15.7	829	952	1006	4中段	3442
R4-4	1195	5142	14.7	379	65.7	398	4中段	3442
R4-5	469	11017	149	363	100	4860	4中段	3442
R4-6	357	6655	150	332	68.2	1206	4中段	3442
R4-7	579	21694	147	274	28.8	660	4中段	3442
R5-1	283	9760	49.6	502	28.8	19919	5中段	3402
R5-2	787	53979	152	612	37.1	30428	5中段	3402
R5-3	125	814	32	199	10.1	2280	5中段	3402
R5-4	166	1190	140	140	18.2	1032	5中段	3402
R6-3	109	1486	54.9	62.8	19.8	881	6中段	3362
R6-4	273	5679	60.4	95.8	27.7	631	6中段	3362
R7-2	833	34046	27.1	335	76.3	2483	7中段	3314
R7-3	181	4832	28	273	45.7	6092	7中段	3314
R7-4	290	2322	72.8	207	100	4272	7中段	3314
R7-6	63.4	932	71.5	110	64.3	453	7中段	3314
R7-7	102	1425	32.7	114	50.3	358	7中段	3314
R7-8	327	4564	403	255	35.9	4002	7中段	3314
R7-11	3207	28556	28.9	175	11.4	5501	7中段	3314
ZH10	600	10200	150	400	40	1270	ZK111	3425	天赞沟矿段^[18]
ZH11	80	24400	1950	50	120	4340	ZK111	3422.5
ZH12	120	700	20	400	40	550	ZK111	3420
ZH13	300	6000	350	450	60	780	ZK111	3418
ZH14	380	4200	30	300	40	1190	ZK111	3388
ZH15	2400	23000	400	500	30	3810	ZK111	3386
ZH16	2500	29000	700	350	180	6560	ZK111	3383
ZH17	2700	84000	1200	1200	140	9490	ZK111	3379
ZH18	2600	25000	220	800	280	2190	ZK112	3272
YK-1	440	4960	60	570	100	1370	ZK39	75	垭口矿段^[19]
YK-2	170	5140	30	1050	130	37.8	ZK39	96
YK-3	340	1310	130	1540	550	1066	ZK24	163
YK-4	240	2340	210	2740	220	39	ZK24	166

Table 2 中长沟、天赞沟、垭口矿段矿体及围岩部分微量元素含量

Table 3 510铀矿床矿石中主元素、伴生有益元素含量特征参数

Table 4 510铀矿床矿石中伴生有益元素特征

Fig.3 510铀矿床铀及伴生有益元素能谱成分(修改自陈田华等^[8])
a—铀矿石能谱成分中锌、镍等元素测点位置及对应峰谱;b—铀矿石能谱成分中钼、铁等元素测点位置及对应峰谱;c—铀矿石能谱成分中锌等元素测点位置及对应峰谱;d—铀矿石能谱成分中钒等元素测点位置及对应峰谱

Table 5 铀与伴生有益元素相关性分析

Fig.4 510铀矿床各矿段内铀及伴生有益元素相关性对比

Fig.5 510铀矿床铀伴生元素垂向、横向分带特征

Fig.6 铀伴生元素矿物镜下特征
a—放射束状产出的辉镍矿;b—硫铁镍矿被放射束状针镍矿和辉镍矿所交代;c—黄铜矿、方铅矿及闪锌矿团块;d—脉状沥青铀矿与闪锌矿、黄铁矿共生;Py—黄铁矿;Cal—方解石;Sp—闪锌矿;Ccp—黄铜矿;Gn—方铅矿;Po—硫镍矿;U—沥青铀矿

Table 6 铀伴生资源类型划分

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