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Author Topic: Looking like meteorite?  (Read 1218 times)
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Offline sashaTopic starter
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« on: February 06, 2010, 02:25:39 PM »
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Hi all,
Found this in Armenia a few month ago in mountainside, very far from any habitation. Contains near 70% Iron. I digged this from 0.4 m. What is it? Looking like meteorite? My MD is PI-type, designed by myself.

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Offline gambol1
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« Reply #1 on: February 06, 2010, 02:36:13 PM »
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Good question Sasha, will a nail stick to it?

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Offline sashaTopic starter
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« Reply #2 on: February 07, 2010, 03:42:50 AM »
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Was at the bottom of a small mountain brook. Unfortunately, without any fixing nails.

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Offline gambol1
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« Reply #3 on: February 07, 2010, 02:30:01 PM »
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Sasha, If nails don't stick to it is probably not Magnetite (load stone) an ore of iron which is easily confused with the iron nickel type of meteor.

Next try placing a magnetic compass near it. If it attracts the compass needle it is magnetic. it could be a iron nickel meteor. No other iron ore is magnetic besides magnetite.

If it is not magnetic it could still be a meteor or iron ore.

I suggest you wash it good with soap and water and a strong bristled brush and look at the surface for signs of melting. Indentations called "thumb prints" occur on the surface of some meteors due to melting when they enter the atmosphere.
That is about all I know about meteors. I am a mineral man.

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« Reply #4 on: February 08, 2010, 05:18:08 AM »
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Gambol, nails don't stick to it because iron is not magnetized and is not a magnet. But external magnet stick to it very well. One of them I cutted using diamond saw, you can see metallic spots at its surface (see photo). The ball-shaped magnet fixed to surface very well. Can we meet "nuggets" of iron in nature?

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Offline gambol1
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« Reply #5 on: February 08, 2010, 07:09:27 PM »
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Sasha, terrestrial iron does exists only as extremely rare tiny crystals but you won't dig it out of the bottom of a stream. If a magnet sticks to it it is a meteor or man made. The one place I have found man made iron that resembled a meteor was on a iron smelter slag heap.

Do you see any signs of melting?, Thumb print shaped shallow indentations. rounded corners, hollow pits that look like gas bubbles? Is there rock on one side and iron on the other?,


It is looking more and more like a meteor. If it is one it should bring A LOT of money. Don't scratch, break or saw into it you will decrease the value. You will have to have a expert certify it to be sure. There lots of hobby resources on the internet. If you want me to help just ask.

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« Reply #6 on: February 09, 2010, 04:17:24 AM »
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Gambol, many thanks for the information. There is laboratory in Moscow:
http://www.geokhi.ru/~meteorit/metengl-e.html
The Laboratory's main fields of research are meteorites, I think to appeal to laboratory  some day.
And what about fossils?
I live in Armenia, Yerevan. My home situated 1400 м above sea level, against the backdrop of Mount Ararat. I found many
 fossils nearest of my living place (see photo). The big part of  fossils are shelf calcium coral.
 At times I find silicified corals there, and cutting, treating and polishing is my hobby.
Gambol, what do you think about age of fossils?

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« Reply #7 on: February 09, 2010, 06:47:30 PM »
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Sasha, nice fossils, I would not hazard a guess. I see a bracheopod that suggests 400 million years ago but then they could be cretaceous 125 million. There is lots of Cretaceous limestone south of . Have you found any Trilobites?

We have silicified coral here. When I was a boy I collected arrow heads the native americans made from the coral. I found points you could see through. The native americans placed a high value on the coral and traded it
. I found it in Texas and South Carolina. Some craftsmen still make jewelry out of it when they can find it. There is only one place it comes from and that is the bottom of Tampa bay. Most of it is covered with silt now and you can't collect it. You have a good hobby with your lapidary but If I lived in  Armenia I would be studying History and looking for treasure. How strict are the laws for hunting treasure in Armenia?

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« Reply #8 on: February 10, 2010, 03:53:52 PM »
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Gambol, I haven't found Trilobites here, but i found silicified wood and twice silicified dinosaur-bone in different places nearest my living place. In other places of Armenia I found a lot of arrow heads the native armenians made from the black obsidian.

I like looking for treasure, Armenia is a museum under the open sky, rich of events.
But there are serious restrictions. Near monuments of culture to emerge with the detector in hand, and even more so with a shovel is prohibited, protected by the state. I think it's very right, to protect from damages. But there are many other places for hunting: ancient settlements, the caravan routes and etc. I have a not bad collection of antiquities, I am preparing and waiting hunting season now.

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« Reply #9 on: February 10, 2010, 05:30:18 PM »
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Quote:Posted by gambol1
Sasha, terrestrial iron does exists only as extremely rare tiny crystals but you won't dig it out of the bottom of a stream. If a magnet sticks to it it is a meteor or man made. The one place I have found man made iron that resembled a meteor was on a iron smelter slag heap.


This is incorrect. Iron based magnetite exists in nature and can be plentiful in some areas. The sample of the OP does not look like a meteorite, but rather a  "meteorwrong" or magnetite


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« Reply #10 on: February 10, 2010, 08:05:00 PM »
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technos, wiki( iron ore )and look down about 3 paragraph

"Metallic iron is virtually unknown on the surface of the Earth except as iron-nickel alloys from meteorites and very rare forms of deep mantle xenoliths. Therefore, all sources of iron used by human industry exploit iron oxide minerals, the primary form which is used in industry being hematite."

phs.
sasha, I took a virtural tour of Armenia today and it looks like a place I would like to visit.

I am especially interested in historic monastic ruins which Armenia has plenty of.

In USA the state and Federal lands are completely restricted from metal detecting. Most lands here are private and the only restrictions is permission from the land owner which is sometimes hard to get.

I would be intersted in treasure hunting around old caravan routes especially. I read a book "Miracle of Gold" by Jennifer Marx. She said that in the Hellenistic age the armies were paid with loot as they traveled through the country and when the loot got too heavy to carry the soldiers would bury it along the way intending to come back for it. Many got killed and never came back.  Somewhere in along the Tigris there is a region she called the "golden road" because so much treasure was buried along this route. Alexander the Great used this route as did Xerxes. I know you know all this because you live there and I have wanted to look in that area ever since I read this book.

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« Reply #11 on: February 10, 2010, 10:39:46 PM »
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Quote:Posted by gambol1
technos, wiki( iron ore )and look down about 3 paragraph

"Metallic iron is virtually unknown on the surface of the Earth except as iron-nickel alloys from meteorites and very rare forms of deep mantle xenoliths. Therefore, all sources of iron used by human industry exploit iron oxide minerals, the primary form which is used in industry being hematite."

phs.
sasha, I took a virtural tour of Armenia today and it looks like a place I would like to visit.

I am especially interested in historic monastic ruins which Armenia has plenty of


Lodestone/magnetite, which has iron oxides in it, is relatively plentiful. Let's not forget that all the material they make steel from comes from some surface mine! The wikipedia article may need to be changed to reflect that. Regardless, you need to take bright, clear, white-balanced pictures of the rock and email them to the geophysicist who runs the "meteorwrong" website so it can be determined definitively whether it is a meteor or not. In my view of the dark fuzzy picture that I can see, it does not have the surfuce features of a meteorite. I spent a lot of time researching one of my own "meteorwrongs!" It turned out to be mining slag, which seems to be everywhere and is fooling a lot of people!

A trip to Armenia sounds like a blast! It may be a while before I can afford that though!  Undecided 

Edit: i sure would enjoy seeing a copy of your PI design and pictures of the detector you built posted over at the geotech1.com forums!

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« Reply #12 on: February 11, 2010, 11:09:18 AM »
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Also we have a very similar type of rock here called --ironstone--very heavy--and was mined to extract the iron, and is the same orange -red colour.  The fossils as i have said in another thread are i think are mid -late cretatious---65 to 90 million years old.

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« Reply #13 on: February 11, 2010, 04:09:05 PM »
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Yes, Armenia is very rich of historical events! We can see everywhere evidence of events of different periods , that discribed in literature.
 And there are many dig out  treasures we can see in museums and collections.
 Of course here are very strong restrictions for metal detecting near historical cultural objects.

The other aspect is the extremely high mineralization of ground in searching areas. We can meet here a lot of hot stones like  tuff (VLF sounds like metal ), intermixed with a hard basalts together, that contrariwise contain up to 3% iron oxides( like ferrite).
Only good PI detectors, or VLFs with a few frequency may work here in the most places.

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« Reply #14 on: February 11, 2010, 07:15:40 PM »
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Technos, You are right he needs to take it to a meteor expert to find out what it is.
Sasha, One way to distinguish magnetite from iron is to crush it. magnetite crushes to a powder like pyrite, iron, like gold does not.



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