|Los Vientos 001|
|Basic information||Name: Los Vientos 001|
This is an OFFICIAL meteorite name.
Abbreviation: LoV 001
Observed fall: No
Year found: 2009
Mass: 73 g
This is 1 of 32 approved meteorites classified as Diogenite-pm. [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
|Comments:||Approved 29 Nov 2011|
Writeup from MB 100:
Los Vientos 001 24°42.000’S, 69°45.000’W
Found: 29 Dec 2009
Classification: HED achondrite (Diogenite, polymict)
Physical characteristics: One stone was found with a total weight of 73 g. Dull, moderately weathered black fusion crust covers ~80% of the stone. The interior of the stone is grey with minor iron-oxide staining.
Petrography: (Laurence Garvie, ASU) Orthopyroxene-rich breccia with clasts (<1 to 5 mm) and mineral fragments with a range of textures and compositions, supported by fine-grained orthopyroxene matrix. The majority of the clasts (~90%) rounded to angular, unzoned low Ca-pyroxene (Fs24.1-33.4Wo2.0-3.0), and large (mm-sized) opaque-rich (FeS and chromite) low Ca-pyroxene (Fs20.1-26.5Wo0.4-2.4). Plagioclase clasts (An84.5-93.9Or0.2-0.5) abundant. Thin section contains a range of clast types, with a diversity of lithologies some with cumulate eucrite texture and compositions and other unique clasts: mm-sized, divergent plagioclase (An70.7-72.2Or1.1-1.3) with interstitial Fs14.8Wo41.9 and silica grains; mm-sized clast of Fs38.2Wo2.9 and An93.8Or0.1; zoned low Ca-pyroxene with Fs22.8Wo2.44 at center and Fs30.4Wo2.6 at grain edge; large (mm-sized) pyroxene with complex zoning, Fs38.6Wo2.7 with lamellae of Fs19.8Wo40.5, grain center is Fs46.9Wo2.1, also contains chadacrysts of An85.4Or0.3; 100 μm clast of An84.5Or0.5 with 10 μm chadacrysts of Fs12.0Wo44.4; large (mm) Fs43.3Wo7.0 grain with lamellae of Fs36.2Wo19.7; and large (mm) Fs36.2Wo3.6 grain with lamellae of Fs20.0Wo40.1. Silica and chromite (to 1 mm) scattered throughout the section. Also sparse kamacite and Ti-spinel.
Classification: Achondrite (diogenite, polymict breccia); Shock level is moderate, with variable shock levels in clasts. Minimal weathering. Visually, the stone looks like a howardite with dark clasts similar to NWA 776. However, the predominance of unzoned low-Ca pyroxene is more consistent with diogenites and the diversity of lithologies warrant the polymict designation.
Specimens: Type specimen, 73 g, ASU; main mass, E. Christensen
ASU: Center for Meteorite Studies, Arizona State University, Tempe, Arizona 85287-1404, United States; Website (institutional address; updated 14 Jan 2012)
|References:||Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)|
This is 1 of 909 approved meteorites from Antofagasta, Chile (plus 1 impact crater)
This is 1 of 934 approved meteorites from Chile (plus 9 unapproved names) (plus 1 impact crater)
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