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How to Cook Up a Volcano: Heat and Serve

How to Cook Up a Volcano: Heat and Serve | geology | Scoop.it
A new study shows how volcanoes cook up an eruption from the cold mush of crystals in their underground magma chambers.
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The giant crystal cave | How It Works Magazine

The giant crystal cave | How It Works Magazine | geology | Scoop.it
The spectacular secret treasures that have been growing beneath Mexico for 500,000 years
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World’s largest blue topaz unveiled 30 years after ‘British Indiana Jones’ escaped Nazis and piranha to get it

World’s largest blue topaz unveiled 30 years after ‘British Indiana Jones’ escaped Nazis and piranha to get it | geology | Scoop.it
THE WORLD'S biggest piece of cut blue topaz gemstone has been unveiled 30 years after it was discovered by a swashbuckling British adventurer likened to Indiana Jones.
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13 glittering, record-setting gems to ogle

From huge pink diamonds to glittering topaz to a giant pearl, these massive gemstones have fascinating histories.
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Rock hounds are on the hunt for new carbon minerals

Rock hounds are on the hunt for new carbon minerals | geology | Scoop.it

A new challenge has scientists searching for dozens of unknown, beguiling crystals
BY SID PERKINS 11:04AM, OCTOBER 4, 2016

CAN YOU DIG IT?  Abellaite, leószilárdite and ewingite (clockwise from left) are three of the seven carbon-bearing minerals recognized by the International Mineralogical Association in the past year. A search is on to find dozens more undiscovered carbon minerals.
LEFT: MATTEO CHINELLATO; RIGHT: TRAVIS OLDS

Magazine issue: Vol. 190, No. 8, October 15, 2016, p. 22

Like many abandoned mines, the Eureka uranium mine in northern Spain is a maze of long, dank tunnels. Water seeping down the walls carries dissolved substances that percolated through rocks overhead. As the water evaporates into the tunnels’ cool air, some of those dissolved ingredients combine to make new substances in solid form.

“The mine is a crystallization factory of weird minerals,” says Jordi Ibáñez-Insa, a physicist at the Institute of Earth Sciences Jaume Almera in Barcelona.

Including the uranium-bearing ores that attracted miners to Eureka in the first place, scientists visiting the mine have cataloged 61 different minerals — solids that have a distinct chemical recipe and arrangement of atoms. The latest find, called abellaite, is a rarity that grows in small pincushions of tiny crystalline needles about 40 to 50 micrometers long. Discovered in July 2010, the mineral has been found only on the walls of a 3-meter-long stretch of one tunnel, says Ibáñez-Insa.

Abellaite is uncommon in another sense: It contains carbon. Of the 5,161 minerals characterized by scientists and recognized by the International Mineralogical Association, just 8 percent, or 416, include carbon.

The Carbon Mineral Challenge, launched last December and running until September 2019, exhorts researchers to scour the landscape — and their museum drawers — for unknown carbon-bearing minerals. In a recent analysis, scientists estimate that there are at least 548 carbon minerals on Earth. That means well over 100 are waiting to be noticed.

The analysis, published in the April American Mineralogist, even provides clues about where scientists and rock hounds should look and what recipes and atomic arrangements such minerals might have.


Via Kim Frye
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'De Beers to begin drilling for diamonds in northern Saskatchewan' @investorseurope #drilling 

'De Beers to begin drilling for diamonds in northern Saskatchewan' @investorseurope #drilling  | geology | Scoop.it
The world's largest diamond mining company is preparing to launch the next phase of its search for the precious stones in Northern Saskatchewan.

Via Igor Espanhol
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Investors Europe Stock Brokers's curator insight, August 20, 9:05 PM

“I think it ticks the boxes for kimberlites, and if you’ve got kimberlites, you should be looking at them for diamonds,” said CanAlaska president and CEO Peter Dasler, referring to the igneous rock formation named for Kimberly, South Africa. "

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De Beers Harvests Diamonds at the Bottom of the Sea

De Beers Harvests Diamonds at the Bottom of the Sea | geology | Scoop.it
De Beers is pouring money into an operation that mines diamonds at the bottom of the ocean, and is yielding some of the world’s highest-quality gems.

Via Grant W. Graves
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The Smithsonian Gem and Mineral Collection | Research & News

The Smithsonian Gem and Mineral Collection | Research & News | geology | Scoop.it
A behind-the-scenes exploration of the Smithsonian's Janet Annenberg Hooker Hall of Geology, Gems, and Minerals.
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Canadian Diamond Mines: The Surprise in Northern Canada

Canadian Diamond Mines: The Surprise in Northern Canada | geology | Scoop.it
Everyone was surprised when Canada produced its first diamonds in 1998. Today Canada is a major source of exceptional quality diamonds.
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'Exceptional' 29.6 carat blue diamond found in South African mine

'Exceptional' 29.6 carat blue diamond found in South African mine | geology | Scoop.it
LONDON (Reuters) - A 29.6 carat blue diamond, one of the rarest and most coveted in the world with a possible price tag of tens of millions of dollars, has been discovered at a South African mine by Petra
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Okla. teen finds 3.85-carat gem at Arkansas park

Okla. teen finds 3.85-carat gem at Arkansas park | geology | Scoop.it
MURFREESBORO, Ark. (AP) — A 14-year-old girl from Oklahoma City has unearthed a 3.85-carat diamond at Arkansas' Crater of Diamonds State Park.
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Meet Lithium, the Future's Most Important Mineral - Motherboard (blog)

Meet Lithium, the Future's Most Important Mineral - Motherboard (blog) | geology | Scoop.it
Meet Lithium, the Future's Most Important Mineral
Motherboard (blog)
Rock On is a weekly column about the mysterious minerals, metals, and rocks which make up the world in which we live.
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What Really Happens When Lightning Strikes Sand: The Science Behind a Viral Photo | Overthinking It, Scientific American Blog Network

What Really Happens When Lightning Strikes Sand: The Science Behind a Viral Photo | Overthinking It, Scientific American Blog Network | geology | Scoop.it
Before science, the flash of lighting that followed a crack of thunder was the will of Greek gods or a violent outcropping of animism. Now we ...
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Miners Discover The Worlds Largest Crystal Geode in Spain

Miners Discover The Worlds Largest Crystal Geode in Spain | geology | Scoop.it
     A gigantic cave of crystals has been discovered in an old silver mine in Spain.
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Shells could be 200 MILLION years older than thought

Shells could be 200 MILLION years older than  thought | geology | Scoop.it
Researchers at Williams College in Massachusetts say the minerals of the ancient ‘shells’ are made up of calcium phosphate rather than calcium carbonate, like that of snail shells (pictured).
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Father-Daughter Gem Hunters Find 2.03-Carat Diamond

Father-Daughter Gem Hunters Find 2.03-Carat Diamond | geology | Scoop.it
A father and daughter team of gem hunters made quite the discovery earlier this month at a state park in Arkansas -- a 2.03-carat diamond.
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The World’s Most Valuable Jade Found In Burma

The World’s Most Valuable Jade Found In Burma | geology | Scoop.it
And for something random and odd, but holy cow, here is the most valuable jade found in Burma by surprised miners.
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Super-Rare Minerals Make Earth Unique in Cosmos : DNews

Super-Rare Minerals Make Earth Unique in Cosmos : DNews | geology | Scoop.it

Earth is home to 2,550 exotic minerals, some so scarce the world supply would fit inside a sugar cube. → Continue reading →


Via Yididiya Mulatu
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Investors Europe Stock Brokers's curator insight, March 19, 11:53 AM

'Scientists Robert Hazen of the Carnegie Institution and Jesse Ausubel of The Rockefeller University, whose research paper will appear in a future issue of the journal American Mineralogist, have inventoried the world’s rarest mineral species. Their database includes 2,550 substances that are far rarer than diamonds and gemstones. Several, in fact, are so scarce that the known supply worldwide would be smaller than a sugar cube. Many are incredibly fragile, with a tendency to melt, evaporate or dehydrate, and a few will decompose if they are exposed to sunlight.'

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The Five Most Expensive Colored Diamonds Sold in the Last 40 Years

The Five Most Expensive Colored Diamonds Sold in the Last 40 Years | geology | Scoop.it
These vibrant gems break all the rules and all the records…

Via Enzo Calamo
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How to Cook Up a Volcano: Heat and Serve

How to Cook Up a Volcano: Heat and Serve | geology | Scoop.it
A new study shows how volcanoes cook up an eruption from the cold mush of crystals in their underground magma chambers.
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This pink diamond sold for a historic record of $18 million

This pink diamond sold for a historic record of $18 million | geology | Scoop.it
It has set a world auction record on a per-carat basis for a gem of this colour.
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Inside Australia's graphite boom

Inside Australia's graphite boom | geology | Scoop.it
2014 has seen graphite stocks in Australia take-off with the value of ASX-listed companies topping $1bn
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Fire Opal - Pictures of Fire Opal

Fire Opal - Pictures of Fire Opal | geology | Scoop.it
Fire opal is a translucent to transparent opal with a background color in a fiery hue of yellow, orange or red.
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$1.5M-$2M Diamond Found in Siberia

$1.5M-$2M Diamond Found in Siberia | geology | Scoop.it
A diamond weighing 235.16 carats and worth an estimated $1.5 million to $2 million has been found in Russia’s Siberian republic of Yakutia, Russia’s biggest diamond miner, Alrosa, said Wednesday.
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US geologists turn to old tailings piles to find minerals for smartphones - CTV News

US geologists turn to old tailings piles to find minerals for smartphones - CTV News | geology | Scoop.it
CTV News
US geologists turn to old tailings piles to find minerals for smartphones
CTV News
SACRAMENTO, Calif.
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