It depends on the application of the rock or mineral. For instance, granite is very popular in the manufacture of counter tops and gravestones. But for electrical production, coal is by far the most popular. Malachite is popular among copper refiners, and halite is very popular among chefs and diners. Quartz is the mineral that appears to be most popular among mineral collectors, but gold and diamond are favorites of jewelry makers and consumers. Limestone is preferred among road makers and concrete manufacturers.
It tells us if the rock is Mafic (dark) composed mostly of magnesium and ferrum Or Felsic, (light) composed mostly of silicates such as quartz and feldspbar, or intermediate, a mixture of the two.
most rock form that era are deeply buried.
Hematite can appear gray in color, but will exhibit a reddish to rust-colored streak.
Limestone
Fragile means easily broken. However, there was a children's TV show that was called Fraggle Rock. Let us know if you mean Fragile or Fraggle.
aqua
hip-hop, country and rock
Rock is definitely in the top 5 most popular genres in the U.S. along with Pop, Alternative, Country, and Rap.
HANDS DOWN! ROCK N' ROLL!!!!!!!!!!!
Rock Music
One of the most popular exports in the US is machines and engines. Another of the most popular exports in the US is a variety of electronic equipment.
Califonia is the most popular state in the US
As of 2011, the most popular song in the US is probably Firework by Katy Perry.
The most popular spice in the us is the peper.
I think it is R&B, then probably followed by rock, country, rap, pop, but not sure in which proportion...
they are the most popular entertaniers in us,uk and everywhere
The most popular sports in the us are football baseball and basketball.