Diamond Mining In Borneo

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2,492-carat diamond uncovered at a mine | Borneo Bulletin …

The weight would make it the largest diamond found in more than 100 years and the second-largest ever dug out of a mine after the Cullinan Diamond discovered in South Africa in 1905. The Cullinan was 3,106 carats and was cut into gems, some of which form part of the British Crown Jewels. A 2,492-carat diamond from the Karowe mine in Botswana.

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The of Institute

The diamond deposits of Borneo are believed to share with India the distinction of being the earliest worked diamond mines in the world (see box), although researchers have not been able to pinpoint the exact date that mining began. For example, Webster (1983) believes that mining may have started on the island as early as 600 A.D., and

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KALIMANTAN MINERAL RESOURCES: AN UPDATE ON …

Kelian gold deposit that entered into mining stage in early 1992 with a total resource of 92.1 Mt of ore grading 2.61 g/t Au (Davies et al., 2008). Kelian was the biggest gold-only mine in Indonesia until its mining closure in 2005. Along with Kelian, several smaller gold deposits were also discovered within an apparently NE-SW

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Borneo

River deposits on Borneo were little exploited and are today only a marginal part of the global diamond offer. Some say that this economic stagnation is partly due to the fact that the majority of river deposits (and in particular Kalimantan, the most important mine) are situated on the territory of the Dayak, a people better known as the "head hunters".

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DIAMOND MINING AND TRADE IN SOUTH INDIA IN …

DIAMOND MINING AND TRADE IN SOUTH INDIA IN THE 17TH CENTURY Ishrat Alam In India, diamonds occur over three wide areas: (1) the eastern side of the ... -Fourthly, the diamonds from Succadana (Borneo) had emerged as a strong competitor against Coromandel diamonds. Lastly one is also required to find out whether the supply of diamond from

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Cempaka Diamond Fields | Kalimantan, Indonesia

Mining at Kalimantan's largest diamond mine at its most basic, cheap, picturesque, and – for the bold – participatory. At the Banjarbaru roundabout take a green passenger truck southbound to Desa Pumpung (6000Rp, 15 minutes, 7km), then walk 700m south from the main road. ... Though it marks the first Islamic place of worship in Borneo, the ...

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PROVENANCE OF PINK DIAMONDS: ARGYLE TYPE …

GEMGUIDE - 2 - MAY / JUNE 2020 PROVENANCE OF PINK DIAMONDS • Indonesia (Borneo, Kalimantan) - oldest diamond mining from rivers, starting in 16th century • India (Golcond a) - from kimberlite in the 17th century • Brazil* (Minas Gerais, Mato Grosso) - from rivers in 18th century until present day • South Africa - from kimberlite in late 19th century until

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Indonesian Gemstones

Borneo, once known as "Suvarnabhumi" by Indians, meaning "Golden Land," is rich in gold, silver, and platinum deposits, particularly in Kalimantan and Sumbawa. The largest gold mine is located in Papua's western province, with …

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IN AFRICA: PART I

The first reliable records of diamond finds in Africa date from the late 1860s ("Diamonds are trumps," April 18, 1867). These followed the earlier finds in India several centuries B.C. (recorded in Arthasastra and Ratnapariska Sanskrit texts, as reported in Legrand, 1984); Borneo in the 10th century A.D. (Legrand, 1984); Brazil in the 1720s ...

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The Diamond Deposits of Kalimantan, Borneo

The island of Borneo is one of the oldest known -and least reported on -sources of diamonds. Although diamond mining historically was concentrated in the western area of what is now Kalimantan, recent activity has focused on the alluvial deposits in the southeast. A progress report on t11e first bulk sample pit in this area found th4t significant amounts of diamonds appear to …

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Diamond Mining, Organized Crime, and Corruption

Footnote 2 Around 600 AD, there were diamond discoveries in Borneo (Dickinson, 1965, p. 3). In 1725, ... The diamond mining process is not the same everywhere, as will be shown below. A historical analysis of diamond mining in each of the abovementioned countries, and of each specific mine, could provide us with a rich ethnographic material not ...

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About Us

About Us SECTION PT Black Diamond Resources Tbk. PT BLACK DIAMOND RESOURCES TBK. Our Story PT Black Diamond Resources Tbk. is the holding company to Indonesia …

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The provenance of Borneo's enigmatic alluvial diamonds: A …

The distal diamond source is interpreted to be diamond-bearing pipes that intruded the basement of a block that: (1) rifted from northwest Australia (East Java or SW Borneo) and the diamonds were recycled into its sedimentary cover, or: (2) were emplaced elsewhere (e.g. NW Australia) and transported to a block (e.g. East Java or SW Borneo).

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Restoring the past glory of diamond mining in south …

several reasons, diamond mining has not seen its initiation and impetus till now although it records a considerable number of fertile kimberlite pipes at Wajrakarur, Lattavaram, Chigicherla, Timmasamudram etc. ... was found in Borneo (Kalimantan, Indonesia) in 1728, subsequently in Brazil and South Africa. The 'Periplus of Erithræan Sea ...

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