Wednesday, July 6, 2022
Mineral Researches

Mineral Researches

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Mineral Researches

Some of the world’s oldest rubies linked to early life

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Gold in pyrite
Mineral Researches

‘Fool’s gold’ not so foolish after all

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Zircons studied by the research team, photographed using cathodoluminescence, a technique that allowed the team to visualize the interiors of the crystals using a specialized scanning electron microscope. Dark circles on the zircons are the cavities left by the laser that was used to analyze the age and chemistry of the zircons.Scientists led by Michael Ackerson, a research geologist at the Smithsonian's National Museum of Natural History, provide new evidence that modern plate tectonics, a defining feature of Earth and its unique ability to support life, emerged roughly 3.6 billion years ago. The study, published May 14 in the journal Geochemical Perspective Letters, uses zircons, the oldest minerals ever found on Earth, to peer back into the planet's ancient past.The team tested more than 3,500 zircons, each just a couple of human hairs wide, by blasting them with a laser and then measuring their chemical composition with a mass spectrometer. These tests revealed the age and underlying chemistry of each zircon. Of the thousands tested, about 200 were fit for study due to the ravages of the billions of years these minerals endured since their creation. Credit: Michael Ackerson, Smithsonian.
Mineral Researches

Earth’s oldest minerals date onset of plate tectonics to 3.6 billion...

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McGill Colloidal Au research team study a mineralized (gold-bearing) vein underground at the Brucejack mine. Credit: Duncan McLeish
Mineral Researches

Clues from soured milk reveal how gold veins form

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The research potentially has wide implications for the materials sector and industry. Credit: Monash University
Mineral Researches

Rare earth unlocks copper, gold and silver secrets

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Mineral Researches

Scientists and philosopher team up, propose a new way to categorize...

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Igneous zircon crystal: shows zircon had two main growth periods approx. 20 million years apart in different magmas.
Mineral Researches

Geoscientists use zircon to trace origin of Earth’s continents

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Fragments of the Oued Awlitis 001 meteorites acquired by the Ludovic-Ferrière. Credit: University of Manchester
Mineral Researches

Donwilhelmsite : New mineral from the moon could explain what happens...

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Chrysoberyl
Mineral Researches

Chrysoberyl : One of the world’s most expensive Gemstone

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The fluid inclusions inside the olivine contain nanodiamonds, apart from serpentine, magnetite, metallic silicon and pure methane. Credit: University of Barcelona
Mineral Researches

Natural nanodiamonds in oceanic rocks

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Photo of a glendonite. Credit: Bo Schultz
Mineral Researches

Volcanic eruptions may explain Denmark’s giant mystery crystals

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Brazilian emeralds in a quartz-pegmatite matrix. (Photo courtesy of Madereugeneandrew/Wikimedia Commons)
Mineral Researches

Earth grows fine gems in minutes

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A sample of pebbly rock that U of A researchers took from an outcrop in Nunavut. The rock was found to contain both gold and diamonds—a rare combination similar to that found in the world's richest gold deposit in South Africa. (Photo: Supplied)
Mineral Researches

Diamonds found with gold in Canada’s Far North offer clues to...

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Pioneering new research has helped geologists solve a long-standing puzzle that could help pinpoint new, untapped concentrations of some the most valuable rare earth deposits. Credit: Michael Anenburg, ANU.
Mineral Researches

Geologists solve puzzle that could predict valuable rare earth element deposits

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Larger: A back-scattered electron image of a microscopic crystal of priscillagrewite-(Y) enclosed in fluorapatite. Inset: An optical image of the same crystal. Credit: American Mineralogist / Irina Galuskina et al.
Mineral Researches

Priscillagrewite : New mineral named in honor of renowned Nebraska geologist

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A rough diamond from Kankan, Guinea, that was analyzed in a new study led by a PhD student at the U of A. The imperfections inside the diamond are small inclusions of a mineral called ferropericlase, which is from the lower mantle. Credit: Anetta Banas
Mineral Researches

Uncovering new understanding of Earth’s carbon cycle

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Location and geological map of Yukinoura district, Saikai City, Nagasaki Prefecture, Japan. Credit: Professor Tadao Nishiyama
Mineral Researches

Japan’s geologic history in question after discovery of metamorphic rock microdiamonds

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Quartz is one of the most common crystals on Earth
Mineral Researches

Meteorite strikes may create unexpected form of silica

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Top 15 Most Expensive Gemstones In The World
Mineral Researches

Top 15 Most Expensive Gemstones In The World

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A Trapiche emerald from Muzo Mine, Colombia. Credit: Luciana Barbosa/Wikipedia
Mineral Researches

Trapiche Emerald : What is a Trapiche Emerald? How Does a...

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