By W. S. MacKenzie, C. Guilford
'Hurray for Mackenzie and Guilford for eventually now we have a pictorial consultant to the rock-forming minerals! ...such feasts of color in mineralogy books are infrequent ...an admirable advisor' New Scientist
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Additional resources for Atlas of rock-forming minerals in thin section
In the first estimate of the ore reserves made on the basis of mining technology, the actual amount of ore fell well below original expectations. The ore grade confronted the geologists with challenging problems, and many novel geophysical measuring methods and apparatus were developed to determine the economic limits of the Otanmäki ore deposit. In the 1950s, the establishment of ironworks was planned using the titanium-bearing magnetite concentrate as a raw material. The Otanmäki ore grade was not suitable as such for the blast furnace, and the company turned to the Geological Survey and Suomen Malmi Oy with an appeal for the intensification of iron ore prospecting in northern Finland.
Sorjonen-Ward, P. ), 1993. Geological development, gold mineralization and exploration methods in the late Archean Hattu schist belt, Ilomantsi, eastern Finland, pp. 193–231. Geological Survey of Finland, Special Paper 17. , 1993. Geological setting, characteristics and exploration history of mesothermal gold occurrences in the late Archean Hattu schist belt, Ilomantsi, eastern Finland. , Sorjonen-Ward, P. ), Geological Development, Gold Mineralization and Exploration Methods in the Late Archean Hattu Schist Belt, Ilomantsi, Eastern Finland, pp.
At the end of the 1940s, the governmental authorities encouraged Outokumpu Oy to take a major economic responsibility of ore exploration and development of new metal mining. After protracted discussions between the Ministry of Trade and Industry and the Director General Dr. Eero Mäkinen, the Outokumpu Company finally decided to establish its own exploration department in 1951. At its founding stage Mäkinen invited Veikko Vähätalo, an experienced economic geologist, to take charge of the exploration operations.
Atlas of rock-forming minerals in thin section by W. S. MacKenzie, C. Guilford