Actually, there are no rocks that start with X. However, if you're talking about minerals, there's Xenotime. If you want rock related answers, though, you can say X-ray. Scientists study rocks through X-rays. Hope it helps!
Xi'an Ancient City Wall (Xi'an, China)
Xavier Xander
One landmark in the United States that starts with "X" is the Xavier Mission in New York City.
A Tower?
Mount Rushmore
K-Mart.
Mount Rushmore
Acropolis in Greece
Xavier Court is the name of a street in McLean, Virginia. Quarters 1 (Fort Myer) is a National Historic Landmark in Virginia.
no tree starts with x
x x
there is no filipino word that starts with letter x unless if you will ask about filipino slang words that starts with letter x.
An animal that starts with the letter x is, Xoni.I'm pretty sure that all animals eat food.
No river in India starts with the letter X.