The next meeting is July 23rd: Part 2 of a four part series on geological processes:
1. Plate Tectonic Theory
2. Mountains
3. Plateaus
4. Sedimentary Basins
Mr. Brian will explain each subject, how it relates to minerals, and how to rockhound each formation. He will explain what can be generally found in each formation.
We’ll meet in the GeoSciences/Pebble Pups room in the new Huntsville Gem and Mineral Education Center at 6:00p. Bring your friends! We are hoping to meet new members who joined the Gem & Mineral Society at the Fall Show.
Did You Know? In January, researchers at NASA’s Johnson Space Center identified the world’s oldest asteroid crater: a 43-mile wide impact structure in Yarrabubba, Western Australia. By analyzing radioactive elements in sample rocks, geochronologists determined that the collision occurred about 2 billion years ago. The impact sent 100+ billion tons of water vapor into the upper atmosphere possibly triggering a period of global warming. Source: The Week, February 14, 2020
August - Peridot: Yellow-green gem variety of the mineral olivine. Found as nodules in volcanic rock, occasionally as crystals lining veins in mountains of Myanmar and Pakistan, and occasionally inside meteorites. Spinel: Offers a range of hues from orange, red, pink, purple, blue, violet, and bluish green. Intense reds are caused by chromium, the same trace element that colors ruby and emerald.
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