Valuable deposits of phosphate occur on the island.
Economically valuable deposits have been found in the Balkans; at several places in Peru Chuquicamata, Chilee; and Butte, Mont.
There still remain valuable deposits of asbestos at Wittenoom Gorge in the Hamersley Range and tantalite at Wodgina.
But, the company alleged that when valuable deposits of gold and silver were discovered, the government, for political reasons, withheld the permits it needed to begin digging.
Facebook, in many ways, is like a mining company sitting on valuable deposits that are hard to dig up and refine.
The Bruce Series contains significant and valuable deposits of pitchblende and uranite, a source of uranium largely concentrated in the Mississagi Formation, a quartz pebble conglomerate.
Another practical concern of volcanology is securing data that may aid in locating commercially valuable deposits of ores, particularly those of certain sulfide minerals.
The company said the government had encouraged it to spend "tens of millions of dollars to undertake mineral exploration activities" near the central Salvadoran department of Cabañas, only to withhold necessary permits once valuable deposits were discovered.
You could look into the interstellar mining industry, where I made my gazillions, but oh, wait, I forgot, your spaceships are awful and can't even get to the star systems with valuable deposits.
These may be replaced by iron oxides, manganese oxides, or calcium phosphates; vast surface deposits of copper and zinc carbonates have also formed where limestones were replaced, and valuable deposits have occurred where supergene sulfide enrichment occurs.
