Radioisotope dating audio
When the fragments were put together, the Barwell Meteorite was about the size of a Christmas turkey, making it the largest meteorite to fall in this country in recorded history.
An additionally interesting characteristic of this meteorite in the broken- off fusion crust on the edges of typical specimens.
One source told me this is due to "spaulation", a process wherein the individuals battered against one another after the explosion of the main mass and final fusion crusting process but before hitting the ground.
Fragmental olivines and pyroxenes are common and, based on compositional data, appear to have been derived from chondrules as a result of extensive brecciation.
The fine-grained mineralogy of matrix in Bells differs considerably from other CM chondrites and has closer affinities to matrix in CI chondrites.
Based on its oxygen and noble gas isotopic compositions (Zadnik, 1985; Rowe et al., 1994), Bells can be considered to be a CM2 chondrite, although its bulk composition shows some departures from the typical range exhibited by this group.
However, these variations in bulk chemistry are entirely consistent with the observed mineralogy of Bells.
Thus came about the retirement of Beaver from its career in law enforcement.
One specimen only /g 11.3g = 67.80 - SOLD OUT- September 9, 1961 (CM2 Ungr) Grayson County, TX TKW: 284g Struck Building At PM a detonating fireball was witnessed passing northward just east of the Dallas- Fort Worth area and terminated, striking a building near Bells, Grayson County. exists: Lake Tagish (See report below photo and prices) All these specimens are Fragments (no whole stones were reported) They all appear to be from those first found and NOT from theportion that was picked up after the storm which shortly followed the fall: Adrian J.
This has resulted in the preferential dissolution of Fe-rich chondrule olivines, which are now completely absent in Bells although present in other CM chondrites. This is the most popular material I have ever sold.
The formation of saponite in Bells probably resulted from the dissolution of relatively silica-rich phases, such as pyroxene and olivine, that were derived from chondrules. Absolutely loaded with multisized, multicolored chondrules. The owner of the main masshas raided the price substantially. I am continually fascinated by the variety in the L classifications.
As reported by the BBC: " On Christmas Eve 1965, a very strange event occurred in the Leicestershire village of Barwell...