Singing stones, Mongolia (part 1)

Singing Stones Altai Qiemuerqieke Cemetery China
The main text below is from the introduction of a Chinese documentary called Stone man - Guardian of the soul (video loads very, very slowly) - about the Qiemuerqieke Cemeteries in Xinjiang China/Mongolia, and the Singing Black Stones of Altai, Mongolia.

Are these singing stones (also known as sonorous rocks) from a fallen meteorite. Or are they natural geological features? Or are they a form of Electric Universe geology? Especially when you consider the amazing geology of the area including the Altai Mountains (gold mountains)?

Part 2 and 3 have more on these lithophonic boulders.

Black singing stones - natural or meteorite?

Qiemuerqieke Cemetery, Xinjiang, China Stone man Guardian of the soul
Highlighted image of carving on these rocks

Amina is a herdswoman whose family lives in a vast wasteland at the foot of Mt. Altai. But unlike other herders, this family does not graze. Instead, they guard a pile of black stones on the hillside for the past few years. Local herders call the stones a fetish from the heaven. More interestingly, a separate stone in which a human face is engraved, accompanying the black stones, guards an ancient secret of Mt Altai.
Black Singing Stones Altai Xinjiang, China musical
Since a road was built past Amina's home, more passers-by have been drawn to the black stones. Amina have small hammer prepared for them with which they can create a beautiful sound by knocking on the stones.

She is trying her best to look for the stories of the origin of these stones to satisfy the unquenchable curiosity of her visitors.

"This was a meteorite. When it fell from the sky, it looked like a cloud of fire. It exploded when it hit the ground. Five years ago, before this house was built, these black stones were everywhere here. We call them black stones."

The texture of these stones is similar to that of an iron meteorite but no one witnessed them fall from the sky. Nor was there any historical record of it.

How could people determine that they were meteorites?
Singing Stones Altai Qiemuerqieke Cemeteries meteorites natural rock
Wang Mingshe is an archaeological expert who worked for 40 years in Xinjiang. He and his colleagues arrived at some preliminary conclusions about the black stones.

"There are generally two views about the stones. The first is that the black stone is a meteorite, which explains the high content of iron. The second is that it is a type or ore, which forms Mt Altai in geological development, and has the colour of Mt Altai, related to its metal components."

Further analysis led to the conclusion this could be diorite stones with high content of metal.