Rizalite

Rizalites are black stones of meteoritic origin found in the Philippines. They are considered to be some 710,000 years old.[1]

As such, they are considered tektites - bodies composed of black or dark brown natural glass formed from terrestrial debris ejected during extraterrestrial, meteorite impacts. They generally range in size from millimeters to centimeters.[2]

The stones were named by the Philippine national hero José Rizal.

References

  1. ↑ http://www.nationalmuseum.gov.ph/nationalmuseumbeta/Collections/Geology/Tektites.html Rizalites on National Museum of the Philippines
  2. ↑ http://www.tektitesource.com/Bikolites.html


This article is issued from Wikipedia - version of the 5/30/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.