Answer:
no answer about that have you
<span>Platinum can be found in: Chromite bands
Chromite could be easily found in ultramafic layer of intrusive rocks and it contain several similar components as those that we could found in magma.
The black bands part of the chromite also carries several substance from platinum group metals.</span>
I think the answer is number3
ep·och - noun
a period of time in history or a person's life, typically one marked by notable events or particular characteristics.
"the Victorian epoch"
