NWA 13276 Found 2019
The University of Washington classified the meteorites as rare Martian Shergottite.
Four separate but identical-appearing stones were purchased in December 2019
The specimens lack fusion crust. Fresh interiors are relatively coarse grained and exhibit deep brown olivine grains accompanied by pale green pyroxene and sparkling interstitial maskelynite.Poikilitic texture (mean grainsize 0.7 mm). Composed predominantly of compositionally-zoned pyroxene oikocrysts (with domains of pigeonite and subcalcic augite) enclosing chadacrysts of shock-darkened olivine (with limited compositional zoning), accompanied by lath-like maskelynite and accessory Ti-poor chromite, Ti-chromite, ilmenite, merrillite, pyrrhotite, pentlandite and baddeleyite. Melt inclusions are present within olivine grains. Small shock melt pockets are present and minor secondary barite was observed.
Shock stage: high
Weathering grade: low
international meteorite collector association number #3503
scale cube is 1 x 1 x 1 cm
- Forma mineral / Tipos de meteoritos
- Meteorito marciano NWA 13276 encontrado 2019
- Shergottita marciana
- 25×14×2.2 mm
- 1.6 g
- Origen (región / ciudad)
- Origen (país)