Tagish Lake Meteorite, Exotic Ungrouped Carbonaceous Chondrite


Tagish Lake (C2-ungrouped) - one of the most unusual of all meteorites.  This ungrouped carbonaceous chondrite is a pristine material that is unlike any other carbonaceous type.  Tagish Lake was a witnessed fall over rural Northern Canada, and it's fall was photographed sufficiently for it's orbit to be calculated.  Tagish Lake originated from the cold and dark regions of the outer asteroid belt, where old pristine asteroids orbit far outside the reach of the Sun's radiation (D-type).  

This meteorite has been heavily studied by science, and it is still yielding it's secrets.  It has been determined that Tagish Lake has more nanodiamonds by weight than any other meteorite, and it also contains an assortment of exotic compounds that are similar to those seen in Orgueil and Murchison.  There has been some speculation that this meteorite originated from a cometary body and scientists are currently studying this possibility.  

This meteorite resembles black charcoal with small white inclusions in it.  It has almost no metal content and it has a friable texture.

Refer to the photo.  The black centimeter cube is shown for scale and is not included. Each specimen is unique and may vary slightly in appearance.

Your Tagish Lake micromount comes in a 3x4" Riker box display with glass viewing window and black pebblegrain finish.  The display contains a color print of Tagish Lake where the meteorite was recovered.

From the Meteoritical Bulletin entry on Tagish Lake :

Tagish Lake

British Columbia , Canada

Fell 2000 January 18, 08:43:42 pst (16:43:42 ut )

Carbonaceous chondrite (C2, ungrouped)

A brilliant fireball followed by loud detonations was widely observed over the Yukon Territory and northern British Columbia.  The fireball was also detected by satellites in Earth orbit.  Dust clouds from terminal fragmentation events were widely observed.  Jim Brook recovered several dozen meteorites totaling ~ 1 kg on the ice of Taku Arm, Tagish Lake, on January 25 and 26 (coordinates of first find given above).  Between April 20 and May 8, ~ 500 additional specimens were located on the ice of Taku Arm and a small, unnamed lake 1.5 km to the east, but only ~ 200 were retrieved as many had melted down into the ice making their collection time consuming; recovery was prioritized based on meteorites' mass and degree of disaggregation.  The total mass collected was between 5 and 10 kg.  The strewnfield is at least 16 × 3 km, oriented approximately S30° E.  Classification and mineralogy (M. Zolensky, JSC; M. Grady, NHM):  possibly CI2 group; a matrix-dominated chondrite, with a few small chondrules, CAIs, and isolated grains; matrix mainly phyllosilicates, Fe-Ni sulfides and magnetite, with abundant Ca-Mg-Fe carbonates; olivine.