National News
15-year study details origins, diversity of every known mineral
A 15-year study led by the Carnegie Institution for Science details the origins and diversity of every known mineral on the Earth, a landmark body of work that will help reconstruct the history of life on the earth, guide the search for new minerals and ore deposits, predict possible characteristics of future life, and aid the search for habitable planets and extraterrestrial life.
In twin papers published by American Mineralogist and sponsored in part by NASA, Carnegie scientists Robert Hazen and Shaunna Morrison detail a novel approach to clustering (lumping) kindred species of minerals together or splitting off new species based on when and how they originated.
Once mineral genesis is factored in, the number of “mineral kinds” — a newly-coined term — totals more than 10,500, a number about 75 per cent greater than the roughly 6,000 mineral species recognized by the International Mineralogical Association (IMA) on the basis of crystal structure and chemical composition alone.
“This work fundamentally changes our view of the diversity of minerals on the planet,” says Hazen, Staff Scientist with the Earth and Planets Laboratory, Carnegie Institution for Science, Washington DC.
“For example, more than 80 per cent of earth’s minerals were mediated by water, which is, therefore, fundamentally important to mineral diversity on this planet. By extension, this explains one of the key reasons why the moon and mercury and even mars have far fewer mineral species than the earth.”
“The work also tells us something very profound about the role of biology,” he adds. “One third of earth’s minerals could not have formed without biology — shells and bones and teeth, or microbes, for example, or the vital indirect role of biology, such as by creating an oxygen-rich atmosphere that led to 2,000 minerals that wouldn’t have formed otherwise.”
“Each mineral specimen has a history. Each tells a story. Each is a time capsule that reveals earth’s past as nothing else can.”
According to the paper, nature created 40 per cent of earth’s mineral species in more than one way — for example, both abiotically and with a helping hand from cells — and in several cases used more than 15 different recipes to produce the same crystal structure and chemical composition.
Of the 5,659 recognized mineral species surveyed by Hazen and colleagues, nine came into being via 15 or more different physical, chemical and/or biological processes — everything from near-instantaneous formation by lightning or meteor strikes, to changes caused by water-rock interactions or transformations at high pressures and temperature spanning hundreds of millions of years.
And, as if to show she has a sense of humour, nature has used 21 different ways over the last 4.5 billion years to create pyrite (aka Fool’s Gold) — the mineral world’s champion of diverse origins.
Pyrite forms at high temperature and low, with and without water, with the help of microbes and in harsh environments where life plays no role whatsoever.
Composed of one part iron to two parts sulfide (FeS2), pyrite is derived and delivered via meteorites, volcanoes, hydrothermal deposits, by pressure between layers of rock, near-surface rock weathering, microbially-precipitated deposits, several mining-associated processes, including coal mine fires, and many other means.
To reach their conclusions, Hazen and Morrison built a database of every known process of formation of every known mineral.
Relying on large, open-access mineral databases, amplified by thousands of primary research articles on the geology of mineral localities around the world, they identified 10,556 different combinations of minerals and modes of formation, detailed in the paper, “On the paragenetic modes of minerals: A mineral evolution perspective.”
National News
Chhattisgarh: 5 Maoists Killed, 2 Jawans Injured In Narayanpur Encounter; Visuals Surface
Narayanpur: In a major anti-Maoist operation, at least five Maoists were killed during a fierce encounter with security forces in the dense forests of the Abujhmad region in Chhattisgarh Narayanpur district on Saturday.
The gunfight took place after security personnel received reports about the presence of Maoists in the area.
According to officials, a joint team of security forces launched a search operation early Saturday morning. Around 6 a.m., the forces came under heavy fire, leading to an intense gunfight that lasted nearly five hours.
Statement Of One Of The Jawans
One of the jawan, part of the searching team, said that approximately 20 Maoists were present there, with at least five of them killed during the encounter.
“We were a team of 1,439 personnel deployed in the search operation. The encounter lasted until around 11 a.m., during which several Maoists were also injured. I came back but the search operation is still going on to capture the remaining Maoists,” he said.
2 Security Personnel Injured
During the operation, two security personnel sustained injuries. One of them, identified as Khileshwar Gawade, suffered bullet wounds in the head and right hand, while the other, Hiraman Yadav, was hit in the thigh. Both injured personnel were immediately evacuated and airlifted to Raipur for further medical treatment. Officials have assured that their condition is stable.
Security personnel have so far recovered the bodies of five Maoists, along with some weapons. The process of identifying the dead Maoists is underway.
About Abujhmad Region
The Abujhmad region, which borders Maharashtra’s Gadchiroli district, is known for being a hotbed of Maoist activity. Just last month, security forces achieved an important victory by neutralising 31 Maoists in one of the most successful operations in Chhattisgarh’s history.
On the rising success of such operations, Inspector General of Police, Bastar Range, Sundarraj P., had, last week said that a total of 192 Maoists have been killed this year alone. Authorities believe that sustained pressure from security forces is gradually weakening the insurgents’ grip in the region.
National News
Congress President Mallikarjun Kharge Slams BJP Over Infiltrator Issue In Jharkhand, Says ‘Ghuspetiya Andar Aa Rahe Aur Shah Sahab So Rahe’
Jamtara (Jharkhand): As the BJP constantly evoked the issue of infiltration in Jharkhand, Congress President Mallikarjun Kharge said on Saturday that the BJP is scaring everyone in the name of infiltrators and when there is their government in the Centre, why can’t they stop it?
Addressing a public rally in Jharkhand’s Jamtara, Kharge said, “They (BJP) are scaring us in the name of infiltrators. You are in the central government, you are the Prime Minister, you are the home minister, then from where did the infiltrators enter?”
“Ghuspetiya andar aa rahe aur Shah Sahab so rahe,” he added.
He further said that the BJP only knows how to divide.
“When you can stop our helicopters, why can’t you stop infiltrators? They don’t know how to run the government. They only know how to divide. They have raised the matter of infiltrators in the elections and they are making people afraid of this. People are being incited in this way. This won’t work. Now people have understood you,” Kharge added.
About The Chopper Issue
The Congress Chief further targeted the BJP after party MP Rahul Gandhi’s chopper was delayed on Friday and said that today, his chopper was also delayed.
“Rahul Gandhi also did meetings here. We don’t know what problem does BJP has with us. When we want to come our helicopter gets stopped. Yesterday Rahul Gandh’s helicopter was denied permission to fly. Today Shah was coming here so I was stopped today for 20 minutes. His path was different and my path was different. Modiji comes in every way of ours,” Mallikarjun Kharge said.
Congress President Targets BJP Star Campaigners In Jharkhand
Sharpening his attacks further, Kharge targeted BJP star campaigners in Jharkhand and said that they all have gathered like a “war” is going on.
“In Jharkhand helicopters are flying like vultures. Did they come when anyone was in need here.? Some Chief Minister from Assam, Madhya Pradesh, all have gathered like a war is going on. This is battle of democracy where people participate and leaders have no role,” he said.
Voting for the first phase of the Jharkhand assembly elections concluded on November 13, with voting taking place in 43 out of the state’s 81 seats.
Elections on the remaining 38 seats will be conducted on November 20. The counting will be held on November 23.
International
PM Narendra Modi Departs For 5-Day Tour Of Nigeria, Brazil, & Guyana
New Delhi: Prime Minister Narendra Modi on Saturday left for his five-day visit to Nigeria, Brazil, and Guyana. He will be on his three-nation tour from November 16 to 21, where he will be attending the G20 Summit in Brazil.
In his departure statement ahead of his visit, PM Modi stated that he would be first visiting Nigeria at the invitation of President Bola Ahmed Tinubu with a focus on reinforcing the strategic partnership between the two nations. The Prime Minister will also be meeting with the Indian community in Nigeria during his visit. He will be there in the African nation from November 16 to 17.
“At the invitation of H.E. President Bola Ahmed Tinubu, this will be my first visit to Nigeria, which is our close partner in the West African region. My visit will be an opportunity to build upon our Strategic Partnership that is based on shared belief in democracy and pluralism. I am also eagerly looking forward to meeting the Indian community and friends from Nigeria who have sent me warm welcome messages in Hindi,” the statement read.
About PM Modi’s Visit To Brazil
Following this, he will be travelling to Brazil to attend the 19th G20 Summit as a member of the Troika. PM Modi stated that after India’s successful presidency in the G20 Summit last year, Brazil is expected to continue efforts to advance the Global South’s priorities. He will be there in the South American nation from November 18 to 19.
“In Brazil, I will attend the 19th G-20 Summit as a Troika member. Last year, India’s successful presidency elevated the G-20 to people’s G-20 and mainstreamed the priorities of the Global South into its agenda. This year, Brazil has built upon India’s legacy. I look forward to meaningful discussions in keeping with our vision of “One Earth, One Family, One Future.” I will also use the opportunity to exchange views on furthering bilateral cooperation with several other leaders,” the statement added.
About PM Modi’s Visit To Guyana
In the final leg of the trip, PM Modi will be going to Guyana, at the invitation of President Mohamed Irfaan Ali. This marks the first visit of an Indian Prime Minister to Guyana in over 50 years.
In addition, the Prime Minister will attend the 2nd India-CARICOM Summit, where he will meet with leaders from the Caribbean nations to renew historical ties and explore opportunities for deeper cooperation.
“My visit to Guyana, at the invitation of H.E. President Mohamed Irfaan Ali, will be the first-ever visit of an Indian Prime Minister in over 50 years. We will exchange views on giving strategic direction to our unique relationship, which is based on shared heritage, culture, and values. I will also pay my respects to one of the oldest Indian diaspora, who migrated more than 185 years ago, and engage a fellow democracy as I address their Parliament,” the statement read.
“During this visit, I will also join leaders from the Caribbean partner countries for the 2nd India-CARICOM Summit. We have stood together through thick and thin. The Summit will enable us to renew historical ties and expand our cooperation into new domains,” it added.
During his visit to Guyana, PM Modi will receive the highest national award from the Commonwealth of Dominica. The Caribbean nation will bestow the Dominica Award of Honour, on PM Narendra Modi, in recognition of his contributions to Dominica during the COVID-19 pandemic and his dedication to strengthening the partnership between India and Dominica.
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