This stone is part of a rock mass found in one of the plains of Iran. There are no rocky mountains around these rocks. I'm geologist and I guess it's part of the meteorite, what do you think?

Color: light gray, same as lead or coin,

Luster: metallic,

Layering: no layering but some parts have cavities,

It's very heavy for its size and very hard to break,

Quartz can not scratch it,

Streak: gray color,

Density: more than 3.9,

Most of parts are weak magnetic,

30x loop show me very small golden color crystals: When looking vertically with a loop to the rock, golden crystals are seen as a colony, but when viewed obscurely and angularly, these crystals are more clearly distinguishable with the golden edge of the band.

Location: Central Iran.

many thanks

Picture 01 Picture 02 Picture 03 These images are a rock that is scattered around the previous rock, a variety of rock composed of broken and pure fragments of minerals or rock cemented together by a finer material. It seems fragments have been brecciated.

Color: background: rusty iron or type of purple, fragments: dark gray, probably same as lead or coin,

Luster: sub metallic to metallic,

It's very heavy for its size and very hard to break,

Quartz can not scratch it,

Streak: gray color,

Density: more than 3.8,

Most of parts are weak magnetic, Picture04 Picture05

Parts of mineral fragments inside background that have a form same as this photo. This mineral is probably located in the tetragonal or orthorhombic crystallization system, and it is necessary to prove that a thin section is needed, but the rock is very hard to cut :


I sent some samples of the first image stone for testing the ICP (method: AFMS) to the lab and the some results were as follows:

Al(%):0.72, Ba(ppm):112, Ca(%):1.23, Co(ppm):344.3, Cr(ppm):445, Cu(ppm):7345, Fe(%):47, Hf(ppm):1.75, K(ppm):3018, La(ppm):6, Mg(ppm):2937, Mn(ppm):178, Mo(ppm):556.4, Ni(ppm):66, Pb(ppm):970, S(ppm):2899, Sb(ppm):489, Se(ppm):4.59, Si(%):13.11, Sn(ppm):3.2, Ti(ppm):554, V(ppm):39, Zn(ppm):6582, Zr(ppm):76


closed as off-topic by Semidiurnal Simon, Fred, Jan Doggen, Peter Jansson, trond hansen Aug 13 at 18:22

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  • $\begingroup$ I don't know of any metallic minerals with a hardness of 7 or greater, i.e. quartz. The voids in the second image suggest that the material might have been molten and poured over some other material that burned or dissolved out but the pyrite crystals does not support that hypothosis. I look forward to the identification of this piece. $\endgroup$ – Friddy May 17 at 16:34
  • $\begingroup$ Friddy many thanks, I'm not sure about pyrite because they are very fine so that it's very hard to distinguish crystal system. $\endgroup$ – Kia May 17 at 16:42
  • $\begingroup$ The additional photos are helpful, I still don't know what it is but the voids in the other photos could be from some type of corrosion of the large tabular crystals seen in the second to last photo. $\endgroup$ – Friddy May 17 at 17:52
  • $\begingroup$ i wonder if an acid test might be helpfull in finding what this might be,do you get any color change is it reactive or not. $\endgroup$ – trond hansen May 24 at 16:53
  • 1
    $\begingroup$ strange composition,i do not know of any manmade alloy that combines those metalls and it is strange if it is natural.i hope somebody can answer this mystery. $\endgroup$ – trond hansen Aug 3 at 15:43

There are tests that can be done on your specimen to confirm if your specimen is composed of IRON SILICIDE. A more common name for this man-made material is "ferrosilicon". A metallurgist would never call this material an alloy. But it is very "hard" and heavy (high tenacity and s.g.), but it isn't malleable. If your specimen is composed of iron silicide, I would call it "slag". I'm always surprised when I find slag in the most remote areas of our desert, and I am often at a loss for an explanation as to "how it got there", but nevertheless, it's SLAG.


This is not a meteorite. It is man made slag. The fact that you say you found more in the same area around the initial rock are typical of slag. The angular shapes are not breccia, but rather the left-over process of smelting. The sparse weak magnetism is also typical of man-made slag. Meteorites are equally strongly magnetic all over the rock. Meteorites do not contain holes like your specimen contains.

  • $\begingroup$ Thanks, how are slags formed and what are the evidence for their origin? Please see this link. The fact is that there is no evidence of human involvement in its formation as slag. Other strong reasons for this example can not prove that we are faced with a slag. Of course, I do not insist on being meteorite, but knowing the type and name of this stone is more important for me. $\endgroup$ – Kia Jun 29 at 7:33

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