where are vein deposits of gold and silver formed?
clouds graptolites underground patch reefs plants calcite platinum soft soil
A B C D E F G H
Intrusive igneous rocks form underground.
vein deposits of gold and silver are formed underground
where are vein deposits of gold and silver formed? (A) clouds (B) graptolites (C) underground (D) patch reefs (E) plants (F) calcite (G) platinum (H) soft soil