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  • Webster's Revised Unabridged Dictionary
    • Elvan (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.
    • Elvan Pertaining to elves; elvish.
    • n Elvan The rock of an elvan vein, or the elvan vein itself; an elvan course.
    • ***
Century Dictionary and Cyclopedia
    • elvan An improper form of elfin.
    • n elvan The name given in Cornwall (England) to dikes, which are of frequent occurrence in that region, and which, throughout the principal mining districts, have a course approximately parallel with the majority of the most productive tin and copper lodes. The elvans—or elvan-courses, as they are frequently called—have almost identically the same ultimate chemical and mineralogical composition as the granites of Cornwall, but differ considerably from them in the mode of aggregation of their constituents. They vary in width from a few feet to several fathoms; they traverse alike granites and slates, but are more numerous in the vicinity of the granites than they are elsewhere. Many elvans have been worked for the tin ore which they sometimes contain. The rock of which elvans are made up when occurring in loose fragments is also called elvan or elvan-rock.
    • ***
Chambers's Twentieth Century Dictionary
    • adjs Elvan elf-like, mischievous: tricky: disguised
    • n Elvan elv′an the miner's name in the south-west of England for a granular crystalline rock, composed of quartz and orthoclase, which forms veins associated with granite
    • Elvan Also Elv′anite
    • Elvan . See under Elf.
    • ***


In literature:

Hasn't Miss Elvan mentioned it?
"Will Warburton" by George Gissing
Similar ore occurs in Victoria, in Elvans in Porphyry, but it also occurs in Tertiary rocks.
"Explorations in Australia" by John Forrest
Elvan, meaning of the word, 273.
"Notes and Queries, Index of Volume 5, January-June, 1852" by Various
The same observation applies to killas and the granitic porphyry called elvan.
"A Manual of Elementary Geology" by Charles Lyell
May it not perhaps be derived from a place called 'Elvan?
"Notes and Queries, Vol. V, Number 125, March 20, 1852" by Various

In science:

Elvan Ceyhan is an assistant professor in the Department of Mathematics at Ko¸c University, Istanbul, Turkey.
On the Use of Nearest Neighbor Contingency Tables for Testing Spatial Segregation