坦桑尼亚某绿岩带型金矿床中黄铁矿的标型特征及意义

doi:10.11872/j.issn.1005-2518.2019.01.015

Abstract

Abstract:

The greenstone belt around Victoria Lake in Northwest Tanzania is one of the world famous gold metallogenic belts，but its overall research level is relatively low，especially lack of research on major gold-bearing minerals.Pyrite is mainly connectivity gold-bearing mineral in gold deposit，through observing，analyzing and studying the typomorphic characteristics such as morphology，chemical composition and physical properties of pyrite in greenstone belt type gold deposits around Victoria Lake in Tanzania，the organic relationship between typomorphic characteristics and gold grade is found out and applied to the field gold exploration.It is helpful for geologists to distinguish the characteristics of gold-bearing ore bodies in time and accurately，and it has an important guiding significance for field exploration to some extent recognition gold ore body.In this paper，the typomorphic characteristics of pyrite in the greenstone belt type gold deposit have been studied in detail by means of field observation，microscopic observation，electron probe analysis and ICP-MS.The results show that the pyrite in the deposit is light yellow-yellow，mainly fine particles and it has best gold-bearing for pyrite with subhedral and cataclastic structure.It is mainly composed of pentagonal dodecahedron，pentagonal dodecahedron and other monomorphic polygons in the main ore body which gold mineralization is strong.The S/Fe average value of pyrite in the main metallogenic period is 1.96，and it shows that the characteristics of the main content elements of pyrite in the main metallogenic stage，with deficient S and rich Fe as a whole，and showing the sulfur fugacity of the hydrothermal system in the main metallogenic period is low，while the trace elements are rich in As and Sb，which is positively correlated with the content of Au element.It shows that these elements displace S element in pyrite and form P-type pyrite with better gold-carrying capacity.Pyroelectricity of pyrite near the main ore body is P-type pyrite，it mainly shows the lower denudation extent of overall gold vein，and the exposed vein is only shallow，and there is still a large extension to the deep of the vein，thus it has a good prospecting for deep.

Key words: greenstone belt type gold deposit, pyrite, typomorphic characteristics, crystalline characteristics, gold carrying capacity, prospecting, Tanzania

CLC Number:

P618.51

Qingwei LUO,Baoguo WANG,Aiwen YI,Kechuan ZHANG,Ze PAN,Shengya ZHANG. Typomorphic Characters and Significance of Pyrite in a Greenstone Belt Type Gold Deposit in Tanzania[J].Gold Science and Technology, 2019, 27(1): 15-24.

Figures/Tables 9

Fig.1

Fig.2

Fig.3

Table 1

Fig.4

Table 2

Table 3

Fig.5

Table 4

References 25

1	崔小军，王建光，彭俊，等.坦桑尼亚维多利亚湖东部绿岩带金矿床地质特征及成因浅析［J］.地质与勘探，2014，50（4）：789-794.
	CuiXiaojun，WangJianguang，PengJun，et al.Geological characteristics and metallogeny of the gold deposits in the East Victoria greenstone belt of Tanzania［J］.Geology and Exploration，2014，50（4）：789-794.
2	BorgG，KroghT.Isotopic age data of single zircons from the Archean Sukuma land greenstone belt，Tanzania［J］.Journal of African Earth Sciences，1999，29（2）：301-312.
3	BorgG，吴礼道.坦桑尼亚盖塔和朱比利里夫太古代条带状铁建造中金矿床的成因探讨［J］.国外火山地质，1992（1）：32-43.
	BorgG，WuLidao.Discussion on the genesis of gold deposits in Archean BIF in Getia and Jubilee Reef of Tanzania［J］.International Volcanology，1992（1）：32-43.
4	沈保丰.太古宙绿岩带中金矿床的地质特征和找矿标志［J］.国外前寒武纪地质，1987（2）：1-35.
	ShenBaofeng.Geological characteristics and prospecting criteria of gold deposits in Archean greenstone belts［J］.International Precambrian Geology，1987（2）：1-35.
5	沈保丰，骆辉，胡小蝶，等.中国绿岩带金矿资源的现状特色和展望［J］.矿产地质，1991（8）：14-17.
	ShenBaofeng，LuoHui，HuXiaodie，et al.The present situation and prospect of the gold deposits of greenstone belt in China［J］.Mineral Geology，1991（8）：14-17.
6	沈保丰，毛德宝，李俊健.中国绿岩带型金矿床类型和地质特征［J］.前寒武纪研究进展，1997，20（4）：1-12.
	ShenBaofeng，MaoDebao，LiJunjian.Type and geological character of Chinese greenstone belts gold deposits［J］.Progress in Precambrian Research，1997，20（4）：1-12.
7	宫丽，马光.黄铁矿的成分标型特征及其在金属矿床中的指示意义［J］.地质找矿论丛，2011，26（2）：162-166.
	GongLi，MaGuang.The characteristic typomorphic composition of pyrite and its indicative meaning to metal deposits［J］.Contributions to Geology and Mineral Resources Research，2011，26（2）：162-166.
8	高凤，李和平，徐丽萍，等.黄铁矿形貌标型特征的研究进展［J］.矿物学报，2014，34（3）：379-384.
	GaoFeng，LiHeping，XuLiping，et al.Research progress on typomorphic features of pyrite［J］.Acta Mineralogica Sinica，2014，34（3）：379-384.
9	卿敏，韩先菊.金矿床主要矿物标型特征研究综述［J］.黄金地质，2003，9（4）：39-45.
	Qing Min，HanXianju.A summarize of the typomorphic features of minerals in gold deposit［J］.Gold Geology，2003，9（4）：39-45.
10	李逸凡，李洪奎，汤启云，等.山东旧店金矿黄铁矿标型特征及其地质意义［J］.黄金科学技术，2015，23（2）：45-50.
	LiYifan，LiHongkui，TangQiyun，et al.Typomorphic characteristics and geological significance of pyrite in Jiudian gold deposit，Shandong Province［J］.Gold Science and Technology，2015，23（2）：45-50.
11	李勇.辽南上达子堡金矿化区黄铁矿标型特征及意义［J］.吉林地质，2015，34（2）：37-43.
	LiYong.The typomorphic characteristics and signiﬁcance of pyrite in Shangdazibao gold mineralization zone，Southern Liaodong Peninsula［J］.Jilin Geology，2015，34（2）：37-43.
12	王晓青，杨兴科，芮会超.内蒙古岱王山金矿黄铁矿形态标型及其变化规律与找矿意义［J］.黄金科学技术，2017，25（5）：39-46.
	WangXiaoqing，YangXingke，RuiHuichao.The crystal form typomorphism of pyrite and its variation regularity and prospecting significance in Daiwangshan gold deposit，Inner Mongolia［J］.Gold Science and Technology，2017，25（5）：39-46.
13	高振敏，杨竹森，李红阳，等.黄铁矿载金的原因和特征［J］.高校地质学报，2000，6（2）：156-162.
	GaoZhenmin，YangZhusen，LiHongyang，et al.Genesis and characteristics of gold hosted by pyrite［J］.Geological Journal of China Universities，2000，6（2）：156-162.
14	薛建玲，李胜荣，孙文燕，等.胶东邓格庄金矿黄铁矿成因矿物学特征及其找矿意义［J］.中国科学（地球科学），2013，43（11）：1857-1873.
	XueJianling，LiShengrong，SunWenyan，et al.Characteristics of the genetic mineralogy of pyrite and its significance for prospecting in the Denggezhuang gold deposit［J］.Science China：Earth Sciences，2013，43（11）：1857-1873.
15	李勇.辽南上达子堡金矿化区黄铁矿标型特征及意义［J］.吉林地质，2015，34（2）：37-43.
	LiYong.The typomorphic characteristics and signiﬁcance of pyrite in Shangdazibao gold mineralization zone，Southern Liaodong Peninsula［J］.Jilin Geology，2015，34（2）：37-43.
16	刘文化，张殿龙，杨晋升，等.山东埠上金矿黄铁矿成因矿物学研究［J］.黄金科学技术，2011，19（2）：47-51.
	LiuWenhua，ZhangDianlong，YangJinsheng，et al.Study on genetic minerageny of pyrite in Bushang gold mine，Shandong Province［J］.Gold Science and Technology，2011，19（2）：47-51.
17	李胜荣，陈光远，邵伟，等.胶东乳山金矿黄铁矿形态研究［J］.地质找矿论丛，1994，9（1）：79-86.
	LiShengrong，ChenGuangyuan，ShaoWei，et al.Study on morphology of pyrite from Rushan gold mines，Jiaodong region［J］.Contributions to Geology and Mineral Resources Research，1994，9（1）：79-86.
18	刘腾飞.桂东金矿黄铁矿标型特征及找矿意义［J］.黄金地质，1996，2（1）：70-76.
	LiuTengfei.Typomorphic characteristic of pyrite and its prospecting implication in gold deposits，Eastern Guangxi［J］.Gold Geology，1996，2（1）：70-76.
19	LiuY S，HuZ C，GaoS，et al.In situ analysis of major and trace elements of anhydrous minerals by LA-ICP-MS without applying an internal standard［J］.Chemical Geology，2008，257（1/2）：34-43.
20	申俊峰，李胜荣，马广钢，等.玲珑金矿黄铁矿标型特征及其大纵深变化规律与找矿意义［J］.地学前缘，2013，20（3）：55-75.
	ShenJunfeng，LiShengrong，MaGuanggang，et al.Typomorphic characteristics of pyrite from the Linglong gold deposit：Its vertical variation and prospecting significance［J］.Earth Science Frontiers，2013，20（3）：55-75.
21	邵伟，陈光远，孙岱生.黄铁矿热电性研究方法及其在胶东金矿的应用［J］.现代地质，1990，4（1）：46-57.
	ShaoWei，ChenGuangyuan，SunDaisheng.Method of investigating thermoelrctricity of pyrite and its application to pyrites from gold deposits in Jiaodong region［J］.Geoscience，1990，4（1）：46-57.
22	李胜荣，陈光远，邵伟，等.胶东乳山金矿田成因矿物学［M］.北京：地质出版社，1993.
	LiShengrong，ChenGuangyuan，ShaoWei，et al.Genetic Mineralogy of the Rushan Gold Field in Jiaodong［M］.Beijing：Geological Publishing House，1993.
23	陈光远，孙岱生，殷辉安.成因矿物学与找矿矿物学［M］.重庆：重庆出版社，1987.
	ChenGuangyuan，SunDaisheng，YinHui’an.Genetic Mineralogy and Prospecting Mineralogy［M］.Chongqing：Chongqing Publishing House，1987.
24	ChenG Y，SunD S，ShaoW，et al.Atlas of Mineralogical Mapping in East Jiaodong Gold Province［M］.Beijing：Geological Publishing House，1996：73-95，119-125.
25	李红兵，曾凡治.金矿中的黄铁矿标型特征［J］.地质找矿论丛，2005，20（3）：199 -203.
	LiHongbing，ZengFanzhi.The pyrite’s typomorphic characteristics in gold deposit［J］.Contributions to Geology and Mineral Resources Research，2005，20（3）：199-203.

Related Articles 15

[1]	Xinxin FENG,Qingqing DONG. Application of CSAMT Method in Depth and Peripheral Prospecting of Cangshang Gold Deposit [J]. Gold Science and Technology, 2019, 27(1): 33-40.
[2]	Yanhua LIU,Guobao CHEN,Hongying YANG,Zhenan JIN,Gairong WANG. Research on Mechanical Activation Properties and Leaching Test of Arseno-pyrite [J]. Gold Science and Technology, 2018, 26(5): 669-676.
[3]	Le AN,Hujun HE,Xingke YANG,Ke HAN,Bin LI,Guozhao HU. Construction of 3D Geological Model and Prospecting Prediction of Matigou Gold Deposit Based on Surpac [J]. Gold Science and Technology, 2018, 26(5): 586-595.
[4]	Xuelong LIU,Fucheng YANG,Changzhen ZHANG,Ying LUO,Shuaishuai WANG. Structural Characteristics and Mineralization of Xuejiping Porphyry Copper Deposit in Northwest Yunnan [J]. Gold Science and Technology, 2018, 26(4): 473-480.
[5]	Leilei ZHANG, Jing ZHANG, Qisong WANG, Liang CHEN, Xu’an CHEN. Characteristics of Pyrite from Huaishuping Gold Deposit in Xiong’ershan District and Its Geological Significance [J]. Gold Science and Technology, 2018, 26(4): 481-491.
[6]	QU Hui, WANG Baiyi, WANG Jianmin, LI Chenglu, XU Guozhan, WANG Zhuo. Application of Soil Geochemical Survey in the Exploration of Yongxin Gold Deposit and Its Prospecting Effect [J]. Gold Science and Technology, 2018, 26(2): 143-152.
[7]	LI Jiafeng, YANG Hongying, TONG Linlin, JIN Zhenan, ZHANG Dengchao. Experimental Study on Bacterial Oxidation-Gold Extraction of Paodaoling Refractory Gold Concentrate [J]. Gold Science and Technology, 2018, 26(2): 248-253.
[8]	ZHANG Pengpeng, LI Junjian, DANG Zhicai, TANG Wenlong, FU Chao, TIAN Jiepeng. Geological Feature and Prospecting Direction of Dornod Uranium Deposit in Mongolia [J]. Gold Science and Technology, 2018, 26(1): 9-16.
[9]	SONG Xuewen，ZHU Jiaqian，LUO Zengxin，CHEN Bo. Study on the Gold Flotation Technology and Process Mineralogy of a Cyanide Residue [J]. Gold Science and Technology, 2018, 26(1): 89-97.
[10]	PAN Haodan1，2，YANG Hongying，TONG Linlin，LI Chengzhuo，DU Shilin，HAN Xinyi，HAN Shuang. Effects of Initial pH on ASH-07 Bacterial Growth and Chalcopyrite Bio-leaching Process [J]. Gold Science and Technology, 2018, 26(1): 115-123.
[11]	ZHANG Jian，YANG Xingke，CHAO Huixia，HE Hujun，HAN Ke，YANG Longwei，LI Bin. Mineralization and Alteration Characteristics of Northern Shiquan-Hanyin Gold Belt in South Qinling [J]. Gold Science and Technology, 2017, 25(6): 21-30.
[12]	LIANG Yongke，WANG Degong，ZHAO Jie. Geological Characteristics and Prospecting Potential of Yuhengtang Gold Deposit in Hunan Province [J]. Gold Science and Technology, 2017, 25(6): 43-51.
[13]	QIU Xuemin，CHEN Guobao，ZHANG Qin，YANG Hongying. Experimental Study on Flotation Recovery of Valuable Metals from Ultrafine Cyanide Tailing Containing High Grade Lead and Zinc [J]. Gold Science and Technology, 2017, 25(6): 61-67.
[14]	WANG Xiaoqing，YANG Xingke，RUI Huichao. The Crystal Form Typomorphism of Pyrite and Its Variation Regularity and Prospecting Significance in Daiwangshan Gold Deposit， Inner Mongolia [J]. Gold Science and Technology, 2017, 25(5): 39-46.
[15]	CHEN Caihua，SUN Bing，CHEN Ji，CHEN Lizi. Prospecting Effect of Stream Sediment Survey in Zhongzhai-Shilipu Area of West Qinling Mountains [J]. Gold Science and Technology, 2017, 25(4): 1-9.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed

Comments

Recommended 0

No Suggested Reading articles found!

样品编号	样品位置	金品位/×10^-6	不同黄铁矿晶形及数量（个数/百分比）
样品编号	样品位置	金品位/×10^-6	{100}	{210}	{111}	复杂聚形	合计
Y01	上部围岩	0.22	8（73）	3（27）	-	-	11
Y02	矿体上部	1.15	6（37）	10（63）	-	-	16
Y03	矿体中心	38.36	7（21）	12（35）	5（15）	10（29）	34
Y04	近矿围岩	0.50	4（40）	5（50）	1（10）	-	10
Y05	矿体下部	2.05	7（28）	11（44）	4（16）	3（12）	25
Y06	下部围岩	0.31	9（60）	6（40）	-	-	15

样品编号	元素检测结果/%
样品编号	S	Fe	S/Fe
YP01	53.19	46.12	2.02
YP02	50.63	44.57	1.99
YP03	49.71	43.54	2.00
YP04	50.64	45.68	1.94
YP05	47.81	43.33	1.93
YP06	49.98	44.54	1.96
YP07	50.20	45.65	1.92
YP08	50.21	44.18	1.99
YP09	52.22	46.33	1.97
YP10	50.26	45.10	1.95
YP11	50.52	45.37	1.95
YP12	48.77	43.25	1.97
YP13	50.45	44.05	2.00
YP14	53.22	47.63	1.96
YP15	51.93	46.64	1.95
YP16	52.13	47.01	1.94
YP17	50.91	45.80	1.95
YP18	50.21	45.56	1.93
YP19	52.27	46.40	1.97

样品编号	元素检测结果/（×10^-6）
样品编号	Cu	Pb	W	Mo	Sn	Ag	Zn	Co	As	Sb	Bi	Hg	Au
YP01	21.1	14.4	4.0	1.92	1.7	0.083	39.6	14.9	4.61	0.36	0.17	0.037	4.73
YP02	26.2	14.7	4.6	1.53	1.9	0.093	33.7	17.4	4.88	0.40	0.20	0.032	11.26
YP03	19.6	12.0	4.8	1.41	1.8	0.081	25.2	14.1	9.79	0.38	0.15	0.037	30.98
YP04	17.7	10.4	6.3	1.43	1.4	0.088	23.9	13.5	16.7	0.42	0.16	0.037	71.53
YP05	21.2	11.4	5.8	1.50	1.6	0.117	24.7	15.8	19.8	0.59	0.16	0.040	76.59
YP 06	21.3	11.9	7.3	1.33	1.2	0.095	21.5	13.7	23.8	0.53	0.17	0.041	80.17
YP07	20.2	11.8	3.8	1.53	1.6	0.092	30.6	16.9	17.7	0.44	0.13	0.043	58.26
YP08	24.5	12.1	6.2	1.66	1.9	0.109	31.9	22.3	32.4	0.68	0.22	0.055	112.85
YP09	34.1	9.7	6.8	1.26	2.0	0.104	41.4	21.1	15.3	0.38	0.18	0.038	85.84
YP10	32.4	12.3	5.1	1.17	1.9	0.108	67.9	17.2	13.3	0.75	0.16	0.047	74.87
YP11	30.6	12.4	6.2	1.21	2.5	0.092	68.4	16.8	10.6	0.42	0.20	0.035	73.18
YP12	27.5	16.5	4.0	1.10	2.7	0.078	97.6	10.5	7.03	0.38	0.27	0.037	59.61
YP13	20.8	16.0	2.7	1.09	2.7	0.100	110.1	8.7	4.55	0.33	0.37	0.041	19.59
YP14	19.3	14.9	1.8	0.88	2.7	0.089	94.3	7.3	2.86	0.32	0.32	0.045	20.56
YP15	18.4	17.4	2.2	1.08	2.9	0.080	106.7	7.8	3.13	0.36	0.33	0.037	17.37
YP16	17.7	19.0	2.3	1.50	2.6	0.076	116.3	6.9	2.91	0.33	0.30	0.030	9.51
YP17	14.2	17.2	2.1	1.18	2.4	0.064	72.5	7.1	2.14	0.37	0.26	0.042	71.53
YP18	15.4	18.5	2.3	1.30	2.8	0.073	66.4	6.3	2.67	0.45	0.40	0.047	10.22
YP19	15.5	21.4	1.8	1.15	3.0	0.093	134.2	5.6	1.66	0.35	0.14	0.041	10.22

样品编号	样品位置标高/m	样品测定数量/粒	N型α/(μV/℃)			N型出现频数	P型α/(μV/℃)			P型出现频数
样品编号	样品位置标高/m	样品测定数量/粒	最大值	最小值	平均值	N型出现频数	最大值	最小值	平均值	P型出现频数
Y-1	1 265	16	-	-	-	-	373.5	234.6	296.8	100%
Y-2	1 200	12	-112.4	-178.9	-143.2	5%	464.5	78.2	254.4	95%
Y-3	1 190	20	-	-	-	-	330.6	121.4	247.4	100%
Y-4	1 183	15	-82.1	-199.3	-127.6	13%	421.3	96.8	228.5	87%
Y-5	1 160	10	-	-	-	-	407.3	101.2	231.8	100%
Y-6	1 130	14	-77.6	-282.7	-160.8	21%	487.1	83.2	234.6	79%

Typomorphic Characters and Significance of Pyrite in a Greenstone Belt Type Gold Deposit in Tanzania

RichHTML

PDF (PC)