It is mineral or meteoryte?

wus47

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	It is mineral or meteoryte? « on: February 01, 2013, 05:03:22 am »

Hi!
I found two things. One is (may be) pyrite and have the following parameters:
Weight - 1.71 gr,
Color - metallic (silver),
Crystal habit - pyramidal,
Gravity 5.18 gr/cm3
Mohs scale - 5-6.5,
Has conductivity and electrical resistance 1.5-2.0 kom
On air (and after immersing in water) does not rust.
Other mineral have the following parameters.
Weight - 12 gr,
Color - dark,
Gravity 4.25 gr/cm3
Has conductivity and electrical resistance 1.5-2.0 kom

Whether somebody can answer that this second mineral is a meteorite or not.
And first mineral is Pyrite or no?
Thank You

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GoldDigger1950

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	Re: It is mineral or meteoryte? « Reply #1 on: February 01, 2013, 08:44:13 am »

The only way to prove definitively that a meteorite is a meteorite is to slice a bit off. The heat cause an internal change to the rock and a lab can tell you. Try your local university science department.

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It's all about that moment when metal that hasn't seen the light of day for generations frees itself from the soil and presents itself to me.

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	Re: It is mineral or meteoryte? « Reply #2 on: February 19, 2013, 08:12:19 pm »

Since the series "Meteorite Men" came out - just try to find a lab that will look at it. They are overwhelmed with "rocks", . That said - there are some really good books on the subject - your piece looks like magnetite - the pain with magnetite is that it has many of the same features as a meteorite. If you REALLY want to be able to tell yourself - get a pocket nickel test kit. Follow the directions, and, if the swab turns red or pinkish-red (not brownish red), it is probably a meteorite. One kit will do about 20-25 tests.

Mrs.O

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wus47

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	Re: It is mineral or meteoryte? « Reply #3 on: February 20, 2013, 02:54:19 am »

Thank You for trying of help.
Earlier I wrote that both stones do not react to a magnet. Therefore any of them stones not iron or magnetite. It is sulfide of iron.
But both stones (as others) were found in the mountain river and have stayed there very long time. For this time (if there were traces of fusion) after long stay in water they could disappear.
In my region (Ukraine) not exist such laboratories (but Universities are much).
My hypothesis - there are a lot of years (may be and centuries) in this mountain area has fallen the meteorite . But before it has blown (fall) up (as now in Russia) it exploded leaving many splinters (likely as pyrites). Yes on this place is a large hollow (crater) which is covered now by vegetation. Besides I has found there approximately hundred of pyrites (along the river). I think that in time spring a melting of the snow (water) bring down a part of a ground with these stones in the river. The mines(shafts) are not present there. .
Your advice does not approach me so I can not buy your test kit.
Besides I tried to write by these stones on a porcelain plate. All these stones leave a black trace.
It was pleasant to have a talk with You.
have a nice day Mrs

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	Re: It is mineral or meteoryte? « Reply #4 on: February 20, 2013, 01:41:26 pm »

Dear Mrs. O!
I am once again. The fragment of Russian meteorite in eBay is likely to my stone. See the attachment, please.
And excuse me.

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mrs.oroblanco

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	Re: It is mineral or meteoryte? « Reply #5 on: February 20, 2013, 10:05:23 pm »

Some (most) meteorites are magnetic - some strongly, some not so much - but, not all are magnetic. However, they ALL have more nickel than terrestial rocks (earth rocks). Test it for nickel, or take it to a place in Russia that does that sort of thing.

A black streak is NOT a good thing with meteorites.

Mrs.O

Posted on: February 20, 2013, 10:02:49 PM

By the way - I cannot tell what your first one is - pyrite? (does it shatter?) Galena? (does it squash?)

Mrs.O

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wus47

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	It is mineral or meteoryte? « Reply #6 on: February 22, 2013, 09:20:07 am »

Dear Mrs. Oroblanco!
Thank You for answer. You wrote ... A black streak is NOT a good thing with meteorites.
Explain to me in details, I not understand what is means.
And You wrote --.... By the way - I cannot tell what your first one is - pyrite? (does it shatter?) Galena? (does it squash?)
First stone is pyrite but with some another metal (as nickel or cobalt) and it specify gravity (5.18 gr/cm3) is so small for nickelite or cobaltite
I not remember now. But it seems that this first stone (with nickel glitter) will destroys after impact and not squash (moofs scale 4-6). I tried to dissolve a similar pyrite in nitric acid. The process of dissolution continued some days (3-5). After several days (2-3) these stones looked like as concretion (set) of vertical needles with jaggies.
One exemplar of pyrites (with diameter 15 mm) is very similar on Russian meteorite. But it probably is a argillite with concretion of real pyrites .
On spring I goes to Mountain (where I found small crater) once again. It is small size (diameter 2-3 meters and depth 1.5 +-2 m) And it is fresh (not covered by flora ). But it have form of right cone and is placed at top of stone mountain. I think that it is crater after fall of meteorite
My questions to You. Do You are scientist in this branch (meteorite)?
Have a nice day

Posted on: February 21, 2013, 03:25:56 AM

One more stone, similar to a meteorite. It is magnetite but specific gravity is more than 5.12 g/cm3
Black color, Is drawn strongly by magnet.

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wus47

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	Re: It is mineral or meteoryte? « Reply #7 on: February 24, 2013, 01:51:44 pm »

The same but with new image

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	Re: It is mineral or meteoryte? « Reply #8 on: February 27, 2013, 11:59:22 am »

Looks like Bismith Bird shot that hit the Dirt to me?

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