this is in accordance with what might be expected.
*
Plate XVII, illustrating E. Hatschek and A. L. Simon, “Gels in Relation to Ore Deposition.“ Transactions of the Institution of Mining and Metallurgy 21 (1912): 451-480
Presents the authors’ efforts to achieve in the laboratory, something like the conditions by which “many features of the occurrence of gold in quartz” could be explained. Discussion of each figure (reducing agent + appearance), along with epigram (at top), at
page 454
Orientation as printed.
tags: Au; auriferous deposits; economic geology
E. Hatschek & A. L. Simon (1912)