David Weir: Meteorite Studies

Tafassasset

Primitive AchondriteAchondrite with an almost chondritic composition with age similar to the primordial chondrites. These [...]

Tagish Lake

C2-ungrouped Fell January 18, 2000 59° 42′ 15.7′ N., 134° 12′ 4.9′ E. Several hundred [...]

Tatahouine

DiogeniteDiogenites belong to the evolved achondrite HED group that also includes howardites and eucrites. They [...]

Thiel Mountains

PallasiteOne of two main classes of stony-iron meteorite, the other being mesosiderites. Pallasites are igneous [...]

Tazewell

Iron, IAB complex, sLH subgroup Found 1853 36° 26′ N., 83° 45′ W. A mass [...]

Tambo Quemado

Iron, IIIB, octahedriteMost Common type of iron meteorite, composed mainly of taenite and kamacite and [...]

St. Genevieve County

Iron, IIIF, octahedrite Found during FallMeteorite seen to fall. Such meteorites are usually collected soon [...]

Steinbach

Iron, IVA-an (silica-rich orthopyroxeniteA rock composed primarily of orthopyroxene. Non-terrestrial orthopyoxenites include diogenites and a [...]

Taza

Iron, ungroupedModifying term used to describe meteorites that are mineralogically and/or chemically unique and defy [...]

SAU 290

CH3 chondriteChondrites are the most common meteorites accounting for ~84% of falls. Chondrites are comprised [...]

Selma

H4 Found March 26, 1906 32° 24′ N., 87° 0′ W. A 310-pound, quadrangular, pyrimidal-shaped [...]

Seemore Downs 001

L/LL4 Found April 1991 30° 35′ S., 125° 13′ E. When found in Western Australia, [...]

Shallowater

Enstatite achondriteUsed in past as synonym for Aubrites. Present definition from the Meteoritical Bulletin states [...]

Stannern

Eucrite Monomict, noncumulate (Stannern trend) Fell May 22, 1808 49° 17′ N., 15° 34′ E. [...]

Smara

Eucrite Polymict Found April 2000 26° 41′ N., 11° 44′ W. A single 12.87 kg [...]

Seymchan

Pallasite, MG (main-group), anomalous metal composition low-Δ17O subgroup (see details on the Imilac page) Found [...]

Springwater

Pallasite, MG (main-group), anomalous silicate composition high-Δ17O subgroup (see details on the Imilac page) Recognized [...]

Sikhote Alin

Iron, IIAB, coarsest octahedriteMost Common type of iron meteorite, composed mainly of taenite and kamacite [...]

Santa Catharina

Iron, IAB complex, Twin City duo Found 1875 26° 19′ S., 48° 39′ W. Many [...]

Santa Clara

Iron, IVB, ataxite Found 1976 24° 28′ N., 103° 21′ W. A single 63 kg [...]

Sombrerete

Iron, ungrouped (possibly CR chondrite related) Found 1958 23° 38′ N., 103° 40′ W. A [...]

SAHARA 03500

Primitive Achondrite, ungrouped (impact melt rock) Found February 2003 no coordinates disclosed A 221.33 g, [...]

SAHARA 00182

C3-ungrouped w/ CV/CR affinities (related to HaH 073 and possibly to the Coolidge–Loongana grouplet) Found [...]

SAH 98034

H5, highly porous Found September 1998 z+0° 07′ 08′ w+0° 08′ 58′ Five fragments of [...]

SAHARA 99555

Angrite Basaltic/Quenched Found May 1999 y° 13′ 53′ N., x° 32′ 01′ W. A single [...]