Mamut Mine ( ms, Lombong Mamut) is an abandoned

open-pit Open-pit mining, also known as open-cast or open-cut mining and in larger contexts mega-mining, is a surface mining technique of extracting rock (geology), rock or minerals from the earth from an open-air pit, sometimes known as a Borrow pit, b ...

quarry A quarry is a type of open-pit mine in which dimension stone, rock, construction aggregate, riprap, sand, gravel, or slate is excavated from the ground. The operation of quarries is regulated in some jurisdictions to reduce their envi ...

mine located in the

Ranau District The Ranau District ( ms, Daerah Ranau) is an administrative district in the Malaysian state of Sabah, part of the West Coast Division which includes the districts of Kota Belud, Kota Kinabalu, Papar, Penampang, Putatan, Ranau and Tuaran. The c ...

Sabah Sabah () is a States and federal territories of Malaysia, state of Malaysia located in northern Borneo, in the region of East Malaysia. Sabah borders the Malaysian state of Sarawak to the southwest and the North Kalimantan province of Indone ...

Malaysia Malaysia ( ; ) is a country in Southeast Asia. The federation, federal constitutional monarchy consists of States and federal territories of Malaysia, thirteen states and three federal territories, separated by the South China Sea into two r ...

where from 1975 to 1999 various minerals primarily

copper Copper is a chemical element with the symbol Cu (from la, cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkis ...

including some

gold Gold is a chemical element with the symbol Au (from la, aurum) and atomic number 79. This makes it one of the higher atomic number elements that occur naturally. It is a bright, slightly orange-yellow, dense, soft, malleable, and ductile met ...

and

silver Silver is a chemical element with the Symbol (chemistry), symbol Ag (from the Latin ', derived from the Proto-Indo-European wikt:Reconstruction:Proto-Indo-European/h₂erǵ-, ''h₂erǵ'': "shiny" or "white") and atomic number 47. A soft, whi ...

were mined. The mine is known as Malaysia's only

copper mine Copper extraction refers to the methods used to obtain copper from its ores. The conversion of copper consists of a series of physical and electrochemical processes. Methods have evolved and vary with country depending on the ore source, loca ...

. It came to public attention due to major environmental harm it caused.

Geology

The source rock for the mine is

adamellite Quartz monzonite is an intrusive, felsic, igneous rock that has an approximately equal proportion of orthoclase and plagioclase feldspars. It is typically a light colored phaneritic (coarse-grained) to porphyritic granitic rock. The plagioclas ...

porphyry and the

pluton In geology, an igneous intrusion (or intrusive body or simply intrusion) is a body of intrusive igneous rock that forms by crystallization of magma slowly cooling below the surface of the Earth. Intrusions have a wide variety of forms and com ...

s were emplaced hypabysally into

Palaeogene The Paleogene ( ; also spelled Palaeogene or Palæogene; informally Lower Tertiary or Early Tertiary) is a geologic period and system that spans 43 million years from the end of the Cretaceous Period million years ago ( Mya) to the beginning o ...

turbiditic rocks in the Trusmadi Formation and

Early Cretaceous The Early Cretaceous ( geochronological name) or the Lower Cretaceous (chronostratigraphic name), is the earlier or lower of the two major divisions of the Cretaceous. It is usually considered to stretch from 145 Ma to 100.5 Ma. Geology Pro ...

ophiolite An ophiolite is a section of Earth's oceanic crust and the underlying upper mantle that has been uplifted and exposed above sea level and often emplaced onto continental crustal rocks. The Greek word ὄφις, ''ophis'' (''snake'') is found i ...

. The average age of porphyry stocks is 9

mega-annum A year or annus is the orbital period of a planetary body, for example, the Earth, moving in its orbit around the Sun. Due to the Earth's axial tilt, the course of a year sees the passing of the seasons, marked by change in weather, the hou ...

(

Late Miocene The Late Miocene (also known as Upper Miocene) is a sub-epoch of the Miocene epoch (geology), Epoch made up of two faunal stage, stages. The Tortonian and Messinian stages comprise the Late Miocene sub-epoch, which lasted from 11.63 Ma (million ye ...

) with total reserves of deposit about 179 Mt Cu grade. The mine porphyry copper deposite is associated with tertiary

granitoid A granitoid is a generic term for a diverse category of coarse-grained igneous rocks that consist predominantly of quartz, plagioclase, and alkali feldspar. Granitoids range from plagioclase-rich tonalites to alkali-rich syenites and from quartz ...

intrusions with mineral reserves of 77 million tonnes of

ore Ore is natural rock or sediment that contains one or more valuable minerals, typically containing metals, that can be mined, treated and sold at a profit.Encyclopædia Britannica. "Ore". Encyclopædia Britannica Online. Retrieved 7 Apr ...

, an average grade of 0.608% copper and recoverable amounts of gold and silver.

History

Established through a

consortium A consortium (plural: consortia) is an association of two or more individuals, companies, organizations or governments (or any combination of these entities) with the objective of participating in a common activity or pooling their resources for ...

between Japanese and Malaysian companies, the mine began its production in 1975 and produced a total minerals valued at $11.5 million which was exported overseas. Towards the end of 1991, the number of workers in the mine increased to 1,191 from only 100 with 99% of those employed being Malaysian. It is estimated that together with their families, the total number of people dependent their livelihood on the mine is over 10,000. The first production of copper mine also showed that Malaysia was rich in

natural resources Natural resources are resources that are drawn from nature and used with few modifications. This includes the sources of valued characteristics such as commercial and industrial use, aesthetic value, scientific interest and cultural value. O ...

that contributed to the country's output with most copper,

and

are produced in

East Malaysia East Malaysia (), or the Borneo States, also known as Malaysian Borneo, is the part of Malaysia on and near the island of Borneo, the world's third-largest island. Near the coast of Sabah is a small archipelago called Labuan. East Malaysia li ...

. Minerals gathered from the mine was trucked to

Kota Belud District The Kota Belud District ( ms, Daerah Kota Belud) is an administrative district in the Malaysian state of Sabah, part of the West Coast Division which includes the districts of Kota Belud, Kota Kinabalu, Papar, Penampang, Putatan, Ranau and Tuar ...

before being shipped to

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

for refining. Since its closure and subsequent abandonment, waters have filled the mine which is toxic to consumption due to its highly acidic nature. In 2001, the

government of Sabah The Sabah State Government is an authority governing Sabah, one of Borneo states of Malaysia, based in Kota Kinabalu, the state capital. The state government adheres to and is created by both the Federal Constitution of Malaysia, the supreme law ...

through Chief Minister

Chong Kah Kiat Tan Sri Datuk Seri Panglima Chong Kah Kiat (; born 2 June 1948) is a Malaysian politician who served as Minister in the Prime Minister's Department from May 1995 to March 1999, 13th Chief Minister of Sabah from March 2001 to March 2003 and Pre ...

trying to attract the interest among investors to develop the abandoned mine area for tourism attraction which is ideal for resort development with the highland weather, interesting

topography Topography is the study of the forms and features of land surfaces. The topography of an area may refer to the land forms and features themselves, or a description or depiction in maps. Topography is a field of geoscience and planetary sci ...

and scenic view of

Mount Kinabalu Mount Kinabalu ( ms, Gunung Kinabalu, Dusun language, Dusun: ''Gayo Ngaran or Nulu Nabalu'') is the highest mountain in Borneo and Malaysia. With an elevation of , it is List of islands by highest point, third-highest peak of an island on Eart ...

despite no further deal are being realised. Further in 2016, Sabah Deputy Chief Minister

Joseph Pairin Kitingan Tan Sri Datuk Seri Panglima Joseph Pairin Kitingan (born 17 August 1940) is a Malaysian politician who served as the 7th Chief Minister of Sabah from April 1985 to March 1994 and Member of Parliament (MP) for Keningau from August 1986 to May 2 ...

said the local authorities were looking at the possibility of treating the 20.6 million cubic metre of acidic water at the mine pit to overcome

water shortage Water scarcity (closely related to water stress or water crisis) is the lack of fresh water resources to meet the standard water demand. There are two types of water scarcity: physical or economic water scarcity. Physical water scarcity is where ...

in Sabah caused by drought although this proposal later were considered by local

geologist A geologist is a scientist who studies the solid, liquid, and gaseous matter that constitutes Earth and other terrestrial planets, as well as the processes that shape them. Geologists usually study geology, earth science, or geophysics, althou ...

as unfeasible and costly since even if the water could be treated with

acid mine drainage Acid mine drainage, acid and metalliferous drainage (AMD), or acid rock drainage (ARD) is the outflow of acidic water from metal mines or coal mines. Acid rock drainage occurs naturally within some environments as part of the rock weathering ...

(AMD) method to neutralise its acidity, other minerals and heavy metals are still present in the water that made it unfit for human consumption and need more cost to clean the water.

References

External links

* {{commons category-inline, Mamut Copper Mine, Mamut Mine Mines in Sabah Copper mines in Malaysia

Geology

History

See also

References

External links