That't about the best dang rock I have ever seen. Identifying the texture of rocks can reveal much about how it was developed, which can help to determine the mineral makeup. But we wont go into that today, that will be tomorrows lesson. Today's Video was brought to by Not only Haj and the wierd guy making the video but by the letter R and the #2000 because So far, over 2000 minerals have been found, and every year new ones are discovered.