This Planet Really Rocks!
Fascinating Facts about
Did you know that the diamond is the hardest natural substance found on earth?
Did you know that quartz is one of the most common minerals on Earth?
Did you know that marble forms from metamorphosed carbonate rock, most usually limestone?
Did you know that basalt is the most common rock on Earth?
Did you know that breccia is a rock composed of generally large, sharp fragments cemented together?
Did you know feldspars make up more than 50% of the Earth's crust?
Did you know the first recorded use of turqouise dates back to 5000 BC in Mesopotamia, where people used the gemstone to make beads?
Did you know lapis lazul is treasured for its rich blue color and is often used in jewelry? Did you also know that ancient Eqyptians used powdered lapis lazul as eye shadow?
Did you know jade because of it's toughness has been used for many cultural things like hammers, fish hooks, and stone axes.
Did you know that rubies are one of the most popular gemstones today.
Did you know that the first geologist on the moon was Harrison Schmitt who was part of the Apollo 17 mission? From the rock samples he collected, scientists have been able to learn many things about the moon.
Did you know that the Earth is approximately 4.8 billion years old?
Did you know that gold is so soft and easily worked that you could roll an ounce of it into a hair-thin wire 50 miles long?
Did you know that the biggest pure-gold nugget was found in Australia in 1869 and weighed 156 pounds?
Did you know that platinum is so rare that two million pounds of ore may contain only one pound of metal?
Did you know that geodes are dull balls of igneous or sedimentary rock on the outside, but contain beautiful crystals on the inside?
Did you know that meteorites, rocks from space, help scientists learn about the solar system and are very valuable, too?
Did you know that the Taj Mahal built between 1632 and 1654 in India is made entirely out of marble?
Fascinating Facts ||