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Blue-John

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Blue John (mineral) - Wikipedia
Blue John (also known as Derbyshire Spar) is a semi-precious mineral, a rare form of fluorite with bands of a purple-blue or yellowish colour. en.wikipedia.org
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Blue John Cavern: Home
The Blue John Cavern is in itself a series of caverns considered to be the finest range in Great Britain! It is of immense educational interest. www.bluejohn-cavern.co.uk
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About Derbyshire Blue John | C W Sellors Fine Jewellery
Blue John is a semi precious gemstone considered to be one of the rarest minerals in the world, found only within the Treak Cliff Cavern, Castleton, Derbyshire ... www.cwsellors.co.uk
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Blue-John
ˈBlue-John † 1. = after-wort. Hence fig. Obs.1672 Marvell Reh. Transp. I. 82 His Defence was but the blew-John of his Ecclesiastical Policy, and this Preface the Tap-droppings of his Defence. 1683 Salmon Doron Med. i. 242 Brewers Afterworts, or Wash, called ‘Blew-John’. 2. A local name of the blue F... Oxford English Dictionary
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Treak Cliff Cavern Online Shop - Castleton
Exclusive Blue John products including jewellery, carvings, polished samples and more. Available online and from our gift shops at the cavern and Castleton. bluejohnstone.com
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Blue John: Mineral information, data and localities.
A local name for a banded white/purple variety of fluorite from the Castleton area of Derbyshire, England, UK. Visit gemdat.org for gemological information ... www.mindat.org
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Blue John (mineral)
Blue John (also known as Derbyshire Spar) is a semi-precious mineral, a rare form of fluorite with bands of a purple-blue or yellowish colour. In the UK it is found only at Blue John Cavern and Treak Cliff Cavern at Castleton in Derbyshire. During the 19th century, it was mined for its ornamental va... wikipedia.org
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Blue John - Wikipedia
Blue John (mineral), a form of fluorite mined in Derbyshire, England; Blue John Cavern, a cavern in Castleton, Derbyshire where fluorite is mined; Bluejohn ... en.wikipedia.org
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A History of Blue John and Treak Cliff Cavern
The origin of the name 'Blue John' is thought to have come from the French 'bleu et jaune', meaning 'blue and yellow'. Another theory is that the name 'Blue ... bluejohnstone.com
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Blue John - Healing Properties, Color, Power & Facts | Gemexi
Blue John is an answer to all troubles and solution to all issues. Blue John too acts as a divine hand; that assist the soul in learning things from the hidden ... www.gemexi.com
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BLUE JOHN Definition & Meaning - Merriam-Webster
The meaning of BLUE JOHN is a fibrous or columnar variety of fluorite found in Derbyshire, England and used especially for vases. www.merriam-webster.com
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Bluejohn Canyon - San Rafael - Utah.com
Bluejohn Canyon in the San Rafael Swell is both river wash and slot canyon that requires some technical skills. www.utah.com
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John Tyndall's blue sky apparatus
This experiment also explains why the sky often appears to be red in colour as the sun sets. As the sun gets lower in the sky the angle means that the light we see passes through more atmosphere. By the time it reaches us the blue light has already scattered off, leaving the longer wavelength red light to be seen. Tyndall's blue sky tube is a ...
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Kentucky coach John Calipari praises 'blue-collar' roots in return to ...
1 day agoUniversity of Kentucky men's basketball John Calipari recalled his "blue-collar" roots in a press conference ahead of the Wildcats' First Round matchup on Thursday.
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Blue John (album)
Blue John is an album by American organist John Patton recorded in 1963 but not released on the Blue Note label until 1986. Reception The AllMusic review by Steve Huey awarded the album 4½ stars and stated "While the grooving interplay between Patton, Green, and Dixon is as instinctive as ever, Brai... wikipedia.org
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