Tuesday, July 28, 2020

Tanzanite Gemstone: Changing the future of Tanzania’s small miners

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Nikhita Gautam

Article Title

Tanzanite Gemstone: Changing the future of Tanzania’s small miners

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Global Views 360

Publication Date

July 28, 2020

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Miner Saniniu Laizer with the tanzanite gemstones

Miner Saniniu Laizer with the tanzanite gemstones | Source: Tanzanian government

A beautiful gemstone with a wide range of colours, from light to dark hues of blue and violet, found only in a patch 4 kilometres long and two kilometres wide at the foot of mount Kilimanjaro in Tanzania. Existing supply of these gems would run out in about 20 years and finding it in any other region has the probability of just one in a million. Tiffany & Co, the American jewelry manufacturer, described it as “the most important gemstone discovery in over 2000 years”. Yes, we are talking about Tanzanite, the pride of Tanzania.

This rare gemstone was in news recently when a small time miner, Saniniu Laizer found two large weighing 9.27 and 5.103 kgs which are the two largest tanzanite gemstones ever found. This discovery turned the miner millionaire overnight as those pieces were sold at about 3.35 USD. He was congratulated on live television by President John Magufuli, who himself was elected in 2015 with the promise of preservation of the nation’s interest in the mining industry. Mr Laizer’s mining operation includes more than 200 miners and he intends to use the money for the development of a school and a shopping mall near his home.

In order to promote the industry, many reforms were undertaken by the  government of Tanzania. It started taking a 50% equity in all mining projects after 2010 and banned the export of large sized raw gemstones. A fence was also built  in 2018 around the whole area where Tanzanite is mined but about 40% are siphoned without paying any royalty to the government.

However the discovery of such gemstones by a small miner was made possible due to the government policy of promoting local artisanal miners. In order to foster local ownership, the government gave the land and exclusive mining rights to the artisanal miners who mostly owned small and medium establishments. Many trading centres were established by the government in 2019  to facilitate these miners sell gems and gold directly to the government and earn better revenue.

Such discoveries sound promising for the industry in the light of how extensively they are promoted, and how many effective actions the government has taken to protect the industry. This also acts as a big morale booster for the small miners to redouble their efforts and search for the gemstones more vigorously.

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February 4, 2021 4:49 PM

Discovery of a new particle: A Charming Tetraquark

While the world is horrified by the novel Coronavirus, scientists at the European Centre for Nuclear Research (CERN) announced the discovery of a never seen before tetraquark. Any finding in particle physics is a phenomenal one because it could tell us a lot about the origins of the universe and how everything came to be. And this discovery is quite charming and quarky (quirky).

Quarks are the elementary particles so any further division of these particles is not possible. This means everything in the universe is ultimately a combination of Quarks. Any new discovery of Quarks  therefore increase our understanding about the origin of universe

When three Quarks come together, they form familiar particles known as Baryons, for instance, protons and neutrons, found in the nucleus of an atom. A tetraquark, in particle physics, is an exotic meson composed of four quarks.

Murray Gell-Mann, recipient of the 1969 Nobel Prize in Physics for his work on the theory of Elementary particles, chose the name ‘Quark’. Another scientist,  George Zweig from CERN also proposed the Quark theory independently of Gell-Mann.

All the new particles are detected using particle accelerators where particles are accelerated at almost the speed of light and collide to look into their subsets. It is like knocking two rocks together so that they break into smaller constituents.

The most recent tetraquark, named X (6900) was discovered by CERN physicists while working on LHCb (Large Hadron Collider beauty experiment). The already known tetraquarks contain a particular combination of two relatively heavy quarks and two light Quarks. On the other hand X(6900) consists of four heavy Quarks: two Quarks and two anti-Quarks.

This exclusive particle made of unusual combinations is a perfect setting for understanding the fundamental force of nature known as Strong Interaction. The strong force is vital to comprehend as it binds together protons, neutrons and the nucleus that ultimately make up matter. Another perk of X(6900)  is its relatively heavy mass, so these are simpler to look at and are more stable as compared to notoriously fast moving-lighter ones.

The paper written by 800 scientists is yet to be peer-reviewed. The bump observed has a statistical significance of more than five sigma (standard deviations) that is good enough to claim the discovery of a new particle.

In any scenario, this unusual discovery will serve as a piece for completing the puzzle of our universe while serving as evidence of the presence of new particles not yet found.

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