Shilu Iron Mine Area is adjacent to Shilu Town, Changjiang County, Hainan Province, and connected to the Hainan West Expressway to the north. It is about 191km from Haikou City to the north-east and about 70km from Dongfang City to the south.

The mine has a dedicated railway line connected to Basuo Port in Dongfang City and connected to the Guangdong-Hai Railway.

Shilu Iron Mine is one of the important bases of iron ore in my country. The iron ore grade is as high as over 62% and it is the richest large-scale open-pit iron ore deposit in China.

Shilu Iron Mine was originally developed as a copper mine.

"Changhua County Chronicle" records: In the second year of Chongzhen in the Ming Dynasty (1629), the county magistrate Zhang Sanguang drove away the mining thieves and declared that private mining of Yayushan (Shiluling) copper mine was strictly prohibited.

During the several hundred years from the Ming Dynasty to the Qing Dynasty, most of the Shilu copper mine was mined privately, so it was opened and banned several times.

In 1933, Hainan Island established the Qiongya Industrial Bureau to accept investment from overseas Chinese to develop the island's resources.

In 1935, the Qiongya Industrial Bureau sent people to Shiluling to investigate the copper mines, and unexpectedly discovered that the iron ore here was rich in reserves and of extremely high grade. However, due to various reasons, it was not exploited.

In February 1939, the Japanese imperialist invaders set foot on Qiongdao. In order to realize their strategy of "supporting war with war" and "supply on the spot", they immediately sent a survey team to explore the Shilu Iron Mine and ordered Japan to produce fertilizers.

Co., Ltd. invests in large-scale predatory mining.

By the time Japan was defeated and surrendered in 1945, it had plundered more than 3 million tons of iron ore from Hainan (including 2.69 million tons from Tiandu Iron Mine and 690,000 tons from Shilu Iron Mine).

In August 1946, the Hainan Iron Mine Preparatory Office of the former Republic of China Resources Commission was established and took over the Hainan Iron Mine. Some of the dismantled mine precision machinery parts were shipped to Vietnam for sale, and some were shipped to Beihai, Guangxi for sale.

It was originally thought that the Hainan iron ore mine, which was taken over by the Chinese, still had vitality and was expected to flourish, but it turned out to be stagnant again.

Production was not resumed until 1957, after the founding of New China.

From 1957 to 1964, the Hainan Geological Brigade carried out additional exploration work on the mining area. From 1957 to 1958, the 951 Team of the Aerial Survey Brigade of the Geophysical Exploration Bureau of the Ministry of Geology conducted a 1:10,000 ground magnetic survey (8km2) on the mining area and circled 27 anomalies.

Among them, 5 anomalies are believed to be caused by hidden iron ore, and drilling has confirmed that iron ore is found in all of them.

The known proven industrial reserves + prospective reserves are 25.52 million tons, and the average grade of all iron is 46.27%.

There is still a resource crisis in old mining areas.

From 2007 to 2008, a national crisis mine replacement resource exploration project was specially established. The Hainan Provincial Resources Exploration Institute and the Guangdong Provincial Geological Bureau Geophysical Exploration Team cooperated in the exploration, using multiple methods of physical and chemical prospecting and drilling in Beiyi-Hualishan, Nankuang-Chaoyang

Carry out general mining prospecting work, and carry out preliminary survey work in Jixin, Wulie and Jinniuling areas outside the mining area.

Based on the geophysical prospecting results and combined with geology, three prospecting areas for iron ore prospecting were delineated.

The newly added iron ore resources (ore volume) are 40 million tons, and the copper and cobalt metal volume is 20,000 tons.

1. Geological background of the deposit The Shilu iron ore area is located in the western section of the Shilu fold belt of the South China fold system.

Multiple periods of tectonic activity and metamorphism-magma reconstruction have formed a structural pattern that is mainly composed of the east-west structure-magma belt and the northeast-trend structure-magma belt.

The regional mineralization geological structure pattern belongs to the Nanling metallogenic belt among the key metal mineralization zones in my country; its metallogenic conditions are very superior, and it is an important mineralization prospect zone for metal ores, non-metallic minerals, rare and rare earth minerals in my country.

The strata exposed in the mining area mainly include the Qingbaikou System and the Sinian System (Figure 2-4-1).

The iron, cobalt and copper deposits in the mining area mainly occur in the Qingbaikou series rock formations, which can be divided into six layers according to lithology. The first, third, fourth and fifth layers are white or dark gray-gray purple and other variegated phyllite and quartz.

Silica-aluminous rocks such as schist or quartz sericite phyllite and quartzite generally contain andalusite, and the fifth layer is also intercalated with a layer of lithic tuff; the second and sixth layers are gray-white-light gray dolomite and diopside.

Amphiboletized dolomite, diopside tremolite, hematite rock, quartzite, etc.

The sixth layer is the main rock formation where iron, cobalt, and copper minerals are currently known.

According to the lithological combination and its relationship with mineralization, it can be subdivided into 3 sections: the lower section contains cobalt and copper layers; the middle section contains iron layers; the upper section has dolomite intercalated with carbonaceous phyllite, which is an iron-free section and is a dolomite ore.

Mineral layer.

Shilu Iron Mine is controlled by strata and is a volcanic-sedimentary metamorphic deposit, with the ore body produced in layers.

Shilu Mining Area is a well-known large-scale mining area mainly rich in iron ore in China.

In addition to iron ore, metals such as copper, cobalt, nickel, silver, lead and zinc, and non-metallic minerals such as dolomite, quartzite, barite, gypsum, and sulfur are also produced or associated; found in the peripheral areas of the mining area

The main minerals include: iron, copper, lead-zinc, tungsten, tin, gold and other metals, as well as non-metallic mineral deposits (sites) such as limestone, clay, quartz sand, zirconium and titanium sand.

2. Geophysical characteristics of the mining area (1) Magnetic characteristics The aeromagnetic ΔT anomaly (Figure 2-4-2) in the iron ore area generally trends near east-west direction.

The anomalies are positive and negative. The positive anomalies are located in the south, are sparsely distributed, and have a small gradient; the negative anomalies are distributed in the north, are densely distributed, and have a large gradient.

The anomaly intensity is as high as 600nT and as low as -900nT, and negative anomalies are greater than positive anomalies.