The minerals are found in the first condition by examining all the veins running from floor to ceiling of the tunnel.
"Scientific American Supplement, No. 344, August 5, 1882" by Various
Thousands of mineral veins in this and other countries occur in regions remote from eruptive rocks.
"Scientific American Supplement, No. 446, July 19, 1884" by Various
They thus exposed a broad mineral vein on the side of the mountain.
"Short Stories of Various Types" by Various
Coal of a very good quality is found there close by the surface, and they also contain numerous veins of valuable minerals.
"Handbook to the new Gold-fields" by R. M. Ballantyne
Nor can metallic veins, found plentifully in "primitive" mountains, prove anything, for mineral veins are found in various strata.
"The World's Greatest Books - Volume 15 - Science" by Various
The vein may consist of almost any combination of the elements of mineral matter, walls, gouges, and mineralized rock.
"The Economic Aspect of Geology" by C. K. Leith
And how several Miners work on the same Vein?
"Philosophical Transactions of the Royal Society - Vol 1 - 1666" by Various
It appears that the ancient miners first removed the rock from around the veins of copper.
"The Atlantic Monthly, Volume 15, No. 89, March, 1865" by Various
The blood in the miners' veins ran fire.
"The Frontiersman" by H. A. Cody
It has been suggested that these three minerals were originally formed in the quartz veins.
"Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4" by Various
Veins, mineral, on their formation, 484.
"Principles of Geology" by Charles Lyell
It usually occurs in association with other minerals in veins.
"Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 8" by Various
Segregation in mineral veins, 489.
"A Manual of Elementary Geology" by Charles Lyell
Miners have some hope when only a cross vein cuts a main vein.
"De Re Metallica" by Georgius Agricola
The origin of gold-bearing mineral veins is inseparably connected with that vexed question, the origin of mineral veins generally.
"The Romance of Industry and Invention"
Minerals are not abundant, though there are some rich veins of silver.
"Alden's Handy Atlas of the World" by John B. Alden
The success of the miners continued undiminished, and new deposits and veins of gold were discovered daily.
"Harper's New Monthly Magazine, Vol IV. No. XX. January, 1852." by Various
I call on you men to show 'em that Adamsville miners haven't a drop of quitters' blood in their veins!
"Mountain" by Clement Wood
A convention of Quartz Miners, held at Nevada, have adopted a code of laws for the government of those working quartz veins in that country.
"History of the State of California" by John T. Frost
In this way many valuable mineral veins have been formed.
"Encyclopaedia Britannica, 11th Edition, Volume 15, Slice 5" by Various