fluorite

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Synonyms for fluorite

a soft mineral (calcium fluoride) that is fluorescent in ultraviolet light

References in periodicals archive ?
Discovered by the Romans more than 2,000 years ago Blue John has been mined and crafted into precious objects since the 18th century, when it became highly fashionable and was used to create everything from urns to jewellery.
Georgiana Cavendish, Duchess of Devonshire (1757-1806) used to collect Blue John, among other minerals, and in 1842, her husband, William, the 5th Duke and owner of Chatsworth, commissioned the Chatsworth Tazza, which is one of the largest objects ever made from Blue John.
Canyonlands and Arches national parks Chief Ranger Denny Ziemann said they started searching for Richards after they came across his abandoned campsite, and they discovered his car two days later at the Little Blue John Canyon's trailhead.
On the bottom (from the left): Chave gets sassy in Diesel Femme's periwinkle skirt with fluttering lace hem and blue John Fluevog heels.
249, The New Catacomb, The Silver Hatcher, The Striped Chest, and The Terror of Blue John Gap, The Best Horror Stories Of Arthur Conan Doyle is an outstanding compendium of horrific tales guaranteed to haunt the dreams and imaginations of even the most stout of heart.
5 Continue along the road to another car park for the Blue John Cavern.
Found only here, Blue John is a semi-precious mineral discovered 2,000 years ago and still collected in small amounts.
Blue John focused STOKE City forward Jonathan Walters insists he will have no split loyalties as he prepares to face the side he supports on Saturday.
Film -- 127 Hours on OSN Box Office 1 This is the true story of Aron Ralston, a thrill-seeking adventurist who, on a spontaneous hike to Blue John Canyon in Utah became trapped in a canyon after a boulder became dislodged and crushed his arm against the wall.
Donald, a season ticket holder for more than 50 years, was treated to full hospitality including a tour of the Ricoh Arena and pre-match meal before joining the captains Sammy Clingan and former Sky Blue John Eustace on the pitch for photographs before the Watford game.
TRUE BLUE John Terry is after the top job at the Bridge
6 127 Hours (15) Mountain climber Aron Ralston (James Franco) made headlines when he became trapped in the Blue John Canyon in Utah, his arm pinned against the wall by a heavy boulder.
Star rating: 127 HOURS (15) Aron Ralston (James Franco) is an avid mountain climber who made headlines in the summer of 2003 when trapped in the Blue John Canyon in Utah, his arm pinned against the wall of the canyon by a heavy boulder.
Climbing through Blue John Canyon he dislodged a huge boulder which fell on top of him, trapping his right hand between it and the wall.
The story centres around Aron Ralston, an avid mountain climber who made headlines in the summer of 2003 when he became trapped in the Blue John Canyon in Utah, his arm pinned against the wall of the canyon by a heavy boulder.