I grew in a cave,but i,m not alive, I began as water and minerals, but now I am solid, I grow upwards, but I never see the sky

http://en.wikipedia.org/wiki/Stalagmite

http://www.jimloy.com/geology/stalac.htm

Based on the description you provided, it seems like you are referring to a stalagmite. Stalagmites are geological formations found in caves that grow upwards from the cave floor due to the accumulation of minerals from water dripping from the ceiling. They are typically made of minerals such as calcium carbonate and form over thousands of years. Stalagmites never reach the surface of the cave, so they are unable to see the sky.