|Title||Microscopic digital image analysis of gold ores: A critical test of methodology, comparing reflected light and electron microscopy|
|Author||Castroviejo, R; Berrezueta, E; Lastra, R|
|Source||Minerals and Metallurgical Processing vol. 19, 2, 2002 p. 102-109|
|Released||2002 01 01|
Automatic digital phase imaging should yield unbiased and representative characterizations of gold ores. However, this is not a simple task due to low gold grade, fine grain
size, possible complex mineralogy, nugget effect, etc. Using the same sections of a gold-rich ore, a critical test was performed using an optical microscope (OM) and an electron microscope (EM). In general, the two methods are consistent and useful
for ore processing. There are some minor differences, such as the detection of very fine gold grains is enhanced by EM.