Question: At school we have to choose a career and give a presentation. What kind of props would I need to show them about geology?
Filed under: Geology / Earth Science on July 30th, 2009 | 1 Comment »
Here is another Ask-a-Geologist that we received. Obsidian is one of our favorite rocks. Children love this rock too! Question: What is obsidian rock used for?
Filed under: Geology / Earth Science, Rocks on July 23rd, 2009 | No Comments »
Aragonite is a white to colorless minerals which has shades of red, yellow, orange, or brown. Aragonite is made of calcium carbonate, like calcite, and will fizz in an acid. Nice specimens of aragonite can be found in Spain, Morroco, Englad, France, Mexico and the United States, to name a few places.
Filed under: Geology / Earth Science, Minerals on July 22nd, 2009 | No Comments »
Question: How could mineral hardness be used to tell quartzite (shown right) from marble (shown left)? Answer: I don’t know that hardness would be a good test since both of these rocks have undergone metamorphism.
Filed under: Geology / Earth Science, Rocks on July 17th, 2009 | 1 Comment »
July’s birthstone is the ruby. Rubies are one of the hardest known minerals. With a hardness of 9 on the Mohs scale, it is only softer than a diamond. Rubies are known for their beautiful red color.
Filed under: Geology / Earth Science, Minerals on July 16th, 2009 | 1 Comment »
Question: What term for metamorphic rock with banded texture?
Filed under: Geology / Earth Science, Rocks on July 8th, 2009 | No Comments »
The first kit in our new Rock Detectives line is now available. Take your children on a Mineral Mission with this fantastic kit. Your Mineral Mission kit comes complete with six cool mineral samples, a hand magnifier and a CD with over 25 pages of mineral information, sample identification activities, puzzles, coloring pages, and experiments.
Filed under: Geology / Earth Science, Minerals, Rocks on July 3rd, 2009 | No Comments »
