Actually, there are no known rocks that begin with y. However, there are minerals such as Yellow Copperas, Yellow Ochre, Yttro Cerite, and Yttro Columbite. For more details on these minerals, check out probertencyclopaedia.com. I myself have been looking for a rock that starts with Y. Sorry, I haven't found any. But, again with the minerals, I hope it helps!
Mining
Muscovite is a mineral. It begins with the letter m.
Boy names that start with the letter G:GabrielGaryGavinGeorgeGeraldGilbertGlennGordonGregGregoryGriffinGusGuyGirl names that start with the letter G:GabrielleGabyGaleGenevieveGeorgiaGinaGloriaGraceGretaGwendolyn
what engineers start with the letter x
jade
Marble.
gypsums
Yttrofluorite, Yttrotantalite, yellow jasper
aluminum
Minerals help your body grow, and to develop. When people don't get enough of these important minerals then they start to get health problems.
borax
Actually, there are no known rocks that begin with y. However, there are minerals such as Yellow Copperas, Yellow Ochre, Yttro Cerite, and Yttro Columbite. For more details on these minerals, check out probertencyclopaedia.com. I myself have been looking for a rock that starts with Y. Sorry, I haven't found any. But, again with the minerals, I hope it helps!
carbon
Mining
Not unless they have grit and stones trapped in the tire treads.... But metals start out as minerals, and most bikes are made from metals.
Leucite is a mineral. It begins with the letter L.