Iron, lead, pyrite, and mag­netite were iden­ti­fied as heav­ier met­als and min­er­als that are of­ten as­so­ci­at­ed with the lo­ca­tion of gold de­posits. This is be­cause such met­als, rocks, and ...

The iron (III) complexes of several 1,1,5,5-tetraalkyl-2-thiobiurets [Fe (SON (CN i Pr 2) 2) 3 (1), Fe 2 (μ-OMe) 2 (SON (CNEt 2) 2) 2 (2), Fe (SON (CNEt 2) 2) 3 (3), and Fe (SON (CNMe 2) 2) 3 (4)] ...

Highly uniform 3-D ordered macroporous spheres in regular arrays were produced by a double templating process. The first template of larger silica balls produced the polymer skeleton for guiding the ...