Meteorites in Middle-earth
Eol crafted two swords, Anglachel and Anguirel, from an iron meteorite. Tolkien described Anglachel as "a sword of great worth, and it was so named because it was made of iron that fell from heaven as a blazing star; it would cleave all earth-delved iron." (Of Turin Turambar, The Silmarillion) The sword was said to have a black blade which glowed with a pale fire. Anglachel was also sentient, and it was said that the blade was imbued with the malice of its creator Eol. The sword seemed to possess a sense of honor, for it resented that it had been used to slay Beleg and Brandir. In fact, Anglachel was so grieved about Beleg's death that it lost its lustre and dulled its own edges, necessitating its reforging. Since Anglachel (reforged as Gurthang) broke when Turin fell upon the blade, it's theoretically possible that the sword committed suicide as well, as Anglachel/Gurthang was described as being extremely durable.
To my knowledge, the only time Tolkien wrote about meteorites was the case of Eol and his two swords. This makes me wonder what powers meteorites might possess, since they come from beyond Arda. There is a darkness to Anglachel, although this seems to be attributed to the influence of its creator rather than being a trait of the extraterrestrial iron itself.
Varda is associated with the stars, while Morgoth is associated with the vast reaches of space. Would meteorites be touched by Varda, or tainted by Morgoth? Could it be possible that there is a certain duality to meteorites, and they bear the influences of both good and evil?
And, for that matter, what powers might tektites possess? These small pieces of natural glass are formed when a meteorite hits the earth and melts rocks and soil around the point of impact, similar to how obsidian is formed from volcanic eruptions. I think that tektites would possess fewer magical properties than meteorites, but there would still be an innate power found in them.
