Download or read book Gold deposits of New Zealand Considered in Relation to the Comparative Quantities of Reef and Alluvial Gold on the Various Goldfields of the Colony written by Alexander McKay and published by . This book was released on 1903 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gold deposits of New Zealand written by Alexander McKay and published by . This book was released on 1903 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gold Deposits of New Zealand Considered in Relation to the Comparative Quantities of Reef and Alluvial Gold on the Various Goldfields of the Colony Vo written by Alexander McKay and published by Theclassics.Us. This book was released on 2013-09 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1903 edition. Excerpt: ... case ceasing to be productive at a considerable distance from their sources in the Spencer Mountains. This secession of the gold is not due to the want of grinding and sorting of rock material in the beds of these streams, as they have volume and distance from their sources quite sufficient for that purpose, and their beds have lodgment areas as favourable for the retention of gold as the localities farther down stream where it is actually found. It is remarkable that over the area on the south side of this part of the Buller Valley all, or almost all, the gold comes from gravels resting on rocks that are unfavourable for the occurrence of gold-bearing quartz reefs, the country-rock being mainly of Cretaceous age; the other rocks are granitoid gneiss, the first being without reefs, and the last, though not incapable of carrying auriferous reefs, does not seem to do so. At the base of the Cretaceous formation there is a great development of conglomerates and pebble-beds known to be auriferous, the denudation of which seems to have supplied to the river-beds and the adjacent terraces the greater part of the gold which they contain; and, although around the sources of the Glenroy and the Alford Rivers and towards the eastern end of the Victoria Range of mountains quartz reefs are known to occur, none of these have been proved gold-bearing, and none of them are worked. In this district appears a condition of things that more to the south characterizes all the goldfields from the Big or Brown Grey to Ross--viz., that all the rivers, as they are followed inland towards the mountains of the main water divide, cease to carry gold almost immediately on their entering the mountain region. There is seeming exception to this rule in Reefton...
Download or read book Transactions of the Institution of Mining Engineers written by Institution of Mining Engineers (Great Britain) and published by . This book was released on 1906 with total page 932 pages. Available in PDF, EPUB and Kindle. Book excerpt: List of members in v. 1-3, 5, 7, 9, 11, 13, 15, 17, 19-20, 22, 24, 26, 28, 30, 32, 35, 37, 39, 41, 43.
Download or read book Mines and Minerals written by and published by . This book was released on 1903 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Mining Engineer written by Institution of Mining Engineers (Great Britain) and published by . This book was released on 1906 with total page 954 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Mining Engineer written by and published by . This book was released on 1906 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mining Journal of the Northwest Mining Association written by and published by . This book was released on 1903 with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Factory and Industrial Management written by and published by . This book was released on 1902 with total page 1004 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Factory and Industrial Management written by John Robertson Dunlap and published by . This book was released on 1902 with total page 1144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Federated Institution of Mining Engineers written by Institution of Mining Engineers (Great Britain) and published by . This book was released on 1906 with total page 954 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transactions include brief accounts of the activities of member societies.
Download or read book Catalogue of the Library of the Patent Office written by Great Britain. Patent Office. Library and published by . This book was released on 1910 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Supplement to Hocken s Bibliography of New Zealand Literature written by and published by . This book was released on 1927 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engineering Magazine written by and published by . This book was released on 1902 with total page 1212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metallogenic Map of New Zealand written by R. L. Brathwaite and published by . This book was released on 1993 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Engineering Index written by John Butler Johnson and published by . This book was released on 1906 with total page 1266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalogue of the Library of the Patent Office Authors 1898 written by Great Britain. Patent Office. Library and published by . This book was released on 1910 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt:
