Elvan

Elvan is a name used in Cornwall and Devon for the native varieties of quartz-porphyry. They are dispersed irregularly in the Upper Devonian series of rocks and some of them make very fine building stones (e.g. Pentewan stone, Polyphant stone and Catacleuse stone). Greenstone is another name for this stone and it is often used for parts of buildin...
Found on http://en.wikipedia.org/wiki/Elvan

Elvan

• (a.) Pertaining to elves; elvish. • (n.) Alt. of Elvanite • (a.) Of or pertaining to certain veins of feldspathic or porphyritic rock crossing metalliferous veins in the mining districts of Cornwall; as, an elvan course.
Found on http://thinkexist.com/dictionary/meaning/elvan/

Elvan

Elv'an adjective 1. Pertaining to elves; elvish. 2. (Mining) Of or pertaining to certain veins of feldspathic or porphyritic rock crossing metalliferous veins in the mining districts of Cornwall; as, an elvan course.
Found on http://www.encyclo.co.uk/webster/E/23
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