I am unable to see any figures

Have you thought that they could be ancient metallurgical slag?

Most of the specimens are weathered and the photos are not clear. I could not comment on the photos upto 4. The photos 5 & 6 appear to be slug.

Sample 7 appears to be pyritiferous ferrugenous sandstone.

Dear Asoori,

I am sorry.

I am adding three more pictures (8th, 9th, 10th) of the last rock. Maybe you can see these.

Dear Roberto,

Ancient slag is definitely a possibility. However, these rocks were found in areas away from established mining districts. However, the ancients had the means to purify metals on a small scale. I wish I had means to XRD and XRF these specimens.

Dr. Thangavel,

Thanks for your contribution.

Pictures 9 and 10 seem to be fresh surfaces compared to a weathered or fractured of picture 2 & 7. There is no pyrite on # 7.

You mean the slag on # 5 & 6 was deposited on pre-existing rocks?

A Vesicular rock is  sandwiched between the overlying obsidian and underlying limonitised rock(laterite ?) in 6.

Rock no 7 appears to be  micaceous (muscovite)  bearing  granite with slag cover

Dr Thangavel,

Thank you for your input.

As far as I know there are no obsidian deposits on the Greek mainland. Thus this obsidian-looking material must have been introduced by another means. These samples  were probably found on Mt. Parnassos where my father frequently climbed. This mountain is mostly made of limestone.

No 7 is mainly composed of chlorite that weathers into Fe compounds on broken surfaces.

The description of second rock., the igneous rock , points  towards an altered basic rock, probably basaltic? As you mentioned presence of chlorite. The hematite infiltration might be later.

The first one also may be a metabasic

But at the same time you are telling argillaceous material so is it metasedimentary? The obsidian look alike material it appears more like later encrustation on the rock surface.

Dear Asoori,

Thank very much for your input.

I agree the second rock could be basalt, although hard to find it on top of a limestone mountain.

I think too that the first rock is metasedimentary with nice folded layers. I can't explain the obsidian-like crust that was added( ?) later. But there are no volcanoes there, how could the material be added?

The only possibility I guess is molten glass created by a meteorite hitting the earth and vaporizing sand on the surface that bounces and falls and encrusts the rock where it was found.

Looks sorta slag like to me. Where did you find them?

Hello Troy,

Thanks for your input.

These rocks were found on a mountain in Greece. Originally we thought were remains of fake bombs from military aircraft. Large scale mining activities not likely in this location, but maybe it took place on a small scale.

It is hard question.i Agree with your answer

The specimens may be tektite. It is formed due to impact metamorphism relevant to meteorites that slammed into terrestrial basaltic rocks.

The second one may be meteorite. Cut it to see the inside.

How about magnetic?

Here are some photos of mining slag for your comparison. Just saying it looks like these.

https://www.google.com/search?q=slag+from+mining&rlz=1C1PRFC_enUS746US746&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwj6q7vlys_VAhUB9mMKHb4FCkIQsAQIag&biw=1920&bih=950#imgrc=_

Hello Chun Liu,

Your suggestion is interesting, however, there is no trace of magnetism. The glass part though could be tektite.

Hello Troy,

You are right that both stones look like slag, but their underside look like igneous/ metamorphic rocks. Can we have slag deposited on ordinary rocks? It is a possibility.

The slag-looking material looks glassy with conchoidal fracture and a flow-like structure. It could be slag deposited on stones, thrown out of a kiln.

Thanks for your contribution!

Dear all

The stones must not slag, because without a lot of bubbles in the stones. The other reason is the lava has traces of flow.

Dear Michael Issigonis , I wish you don’t mind I use your picture.

Dear all

I think the stones may be meteorites.

1. The lava has traces of flow and different color substances have stratified.

2. I have seen one of this kind of meteorites from picture not long ago.

3. From my experience, under the weathered surface, the substance is very hard. There is some hard red substance in it.

Dear all

 I think the stones are locally weak magnetic.

Perhaps volcanic ejecta from Thera?

Yes, volcanic eject also can has the character.

But I also notice that in the black fusion crust there are a lot of white dots. The white dots are like air hole.

Dear Chin Liu,

Thank you for your tremendous input.

I followed your advice and checked the magnetism of the "fusion crust" of pictures 2,3 &4. It is weakly magnetic, something I missed before. The white dots are dust, but there are a few small holes on the black material on both rocks.

I don't think ejecta from Thera could form the black crust on the mountains in the Greek mainland. These rocks were picked because they looked significantly different from their surroundings. Your idea of meteorites or phenomena connected with meteoritic activity provide a plausible explanation.

Dear Michael Issigonis

Thank you for your encouragement.

I think observation and curiosity is good for scientific study. I am waiting more information and good news.

Regarding fusion crust, I could also agree on 'phenomena connected with meteoritic activity'. One of the Ice Age or Younger Dryas impacts probably lifted sea water and crust material into low orbit, far below freezing temperature, yet fluid while it remained mobile (the third state of water). That water became much more saline by churning with the material. Some material became graded by their different densities, and formed clods.

This belt gradually fell back over wide areas, in somewhat differentiated layers, where it froze and fused, gradually unfroze, and was further transformed by exposure to atmosphere and bacteria. Many fossils may have been made in this process. Most of the impact ejecta fallout it was immediately or gradually eroded into rivers and seas. The only remnants would be on mountains tops and terraces, not on slopes.

What are the alternative explanations for the black outer layer? Perhaps the clodding process in low orbit?

Does the material match sea bottom elements?

Thank you Edmond for your interesting interpretation and new ideas. One should be open to new ideas of thought to understand phenomena happening around us.

I don't know too much about sea bottom elements to be able to explain the fusion crust in that way. If you think volcanic processes, I don't think that will explain the fusion crust.

I would like to XRF and XRD this fusion crust material to find out its composition. That will help in the identification. There is a portable such unit in our university, but the researcher in charge is "out of touch" for now. However, the discovery of a possible diamond deposit nearby might arouse his interest and agree to cooperate with my research activities.

Cut it, and see if there are silver shining metals in it. If silver shining metals are very little, you can see it under warming lamp.in common situation; there are silver shining metals in meteorite.

Thanks again dear Chun Liu for your bright suggestion.

I will cut it as soon as I get home!

Dear all

Today I have restudied the pictures. The melts flows in one direction only. But a meteorite trundles in the air commonly. From the melts flowing way, it is like lava. I have no experience on a big meteorite.

Thank you Chun Liu for your contribution.

This is interesting. I don't have exact location of sample, but there are no volcanoes on mainland Greece where this was probably found. It is still possible that it came from another location.

I am presently at my father's old residence and looking at his notes and where he collected his samples while travelling around the country.

Many years ago, I found a whole lot of black glassy rocks in a field in Somerset, England. They were identified by the Geological Museum, London, as glass slag, and from what I recall contained no bubbles, but how they got there I have no idea, especially as it was a limestone area.

Possibly the rocks you have are not native to the area in which they were found.

Hello Geoff,

That is an interesting idea!

Obviously, the glass in both cases got there from somewhere. My father who found these rocks thought the military aircraft that frequented the mountainous area had something to do with these glass rocks. maybe they dumped it!

Thank you for your contribution!

It is very unscientific with the naked eye to determine whether a rock is basalt or a meteorite. There are only some isotopes which are difference between the rocks. If you can use a scientific way, why not?

Thank you Chun Liu for your continued interest. I will definitely use some scientific instrument to get to the bottom of this as soon as I get home.

Probably start with the XRD / XRF and slice the "fusion crust" to have a look.

It was your interest as well as all the others that contributed who reminded me to investigate it further.

Thank you also to 

Geoff Hellman

Edmond Furter

Troy Bell

Asoori Latha

Roberto Matias Rodriguez

S. Thangavel

Thank you for your reply Dear Michael Issigonis.

The XRD / XRF test result, the inside and outside of the rocks all are interesting me. The most important is that I can study from other scientists in the discussion. I am collecting and reading the knowledge on The XRD / XRF test.

Dear Chun Liu,

Thanks again for your contribution. I am also learning from all the contributions that I receive through the questions and answers.

Nice to have this RG community!

Dear Michael Issigonis

 I have read some information on the XRD / XRF analysis. The XRD / XRF only analyses known terrestrial chemical components for achieving qualitative and quantitative analysis results. If so how to know if they are meteorites or not?

Regards,

Liu

Hi Chun Liu,

Meteorites are high in nickel. This is one way to tell them apart chemically.

Dear Michael Issigonis

“Meteorites are high in nickel.” Yes, it is one of recognizable characteristics. But native nickel has to be more than 5%, and most meteorites don’t contain so much nickel.

Dear Michael Issigonis

Maybe I will change my viewpoint.

http://www.spacerocks.org/meteorite-identification.html

“3. The Chemical Test

 -Clean up the potential meteorite real good

- Use some vinegar to remove the surface rust (the vinegar is acid and it helps to remove some of the rust)

- Test for Nickel-Iron - if it tests positive then it has 99.9% chance of being a meteorite,

 this is of course if the test was done correctly.

There are virtually no naturally occurring rocks on earth that contain Nickel-Iron so this is the best test!”

Thank you Chun Liu for your continuous support and your valuable recommendations.

I am away from home and unable to do any tests on the rocks, but as soon I get home in the near future I will perform the tests that you kindly recommended.

I hope we will know more about these rocks soon.

Thanks again for your support and encouragement.

Dear Michael Issigonis

I am sorry to trouble you. I know you are away from home and inconvenient to do the test. To know the result immediately is not my meaning.  

In my country and other some countries no any scientific institution and real scientists help public to understand and analyze suspended meteorites. So some scientists with pseudoscience do to analyses test for public for his personal purpose.

What I want to do is to know more to help others and myself.

I want to know which witch way is scientific, what kind of rock is worth test,…

Best regard,

LIU