I hope you mean Roman numerals because frankly I don't know anything about Roman minerals. The number 12 is called "duodecium" in Latin.
12 in Roman numerals is XII
It is: 12 = XII
It is: 12 = XII
minerals
They are just called minerals.
Extracting minerals from the ground is called mining.
Arabic ' 12 Roman ; XII Look ant any classical analogue clock, you will see the '12' written in Roman numerals 'XII'.
rock forming minerals
A mixture of minerals is called an ore
A mixture of minerals is called an ore
Someone who analyses minerals is called a mineralogist or mineral analyst.
The number 12 is represented by the Roman numeral XII