20991 - Taza (NWA 859) Iron Ungrouped Plessitic Octahedrite Meteorite 0.5g ORIENTED Coprolite about 515-520 Ma ago) of
Yard notes & kiln story
Description
about 515-520 Ma ago) of Laurentia and are among the oldest known fossils of echinoderms
The color of its enamel varies between tones of cream and brown
Shimada et al
Everything else you see is the system of sensory lines (terrace ridges) that are already described in the article (1)
one of the three most common naturally occurring crystal forms of calcium carbonate
20991 - Taza (NWA 859) Iron Ungrouped Plessitic Octahedrite Meteorite 0.5g ORIENTED Coprolite about 515-520 Ma ago) ofBasic information Name: Northwest Africa 859 This is an OFFICIAL meteorite name. Abbreviation: NWA 859 Observed fall: No Year found: 2001 Country: (Northwest Africa) Mass: help 75. 3 kg Classification Recommended: Iron, ungrouped This is 1 of 124 approved meteorites (plus 1 unapproved name) classified as Iron, ungrouped. Origin or pseudonym: Taza, Morocco Date: 2001 Mass (g): 75. 3 kg Pieces: several Class: Iron ung. Classifier: J. Wasson (UCLA)