Mining
How Precious Opal Forms; Slovakia’s Opal Mines
How Precious Opal Forms; Slovakia’s Opal Mines
#Precious #Opal #Forms #Slovakias #Opal #Mines
“GeologyHub”
Within Slovakia are the largest source of precious opals on the continent. These opals originated approximately 10 million years ago on the southern flank of a dying volcano. This video will discuss how these opals formed, the difference between common and precious opal, and what colors the…
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