[meteorite-list] Strange surface feature

From: gian gallo <gianpgg_at_meteoritecentral.com>
Date: Fri, 27 Mar 2009 00:29:52 +0000
Message-ID: <BLU105-W8E068DEA8A76447929E99BE8E0_at_phx.gbl>

Hola again, G?ran. We did some search...and it is possibly a specular hematite nodule.It surely comes from the Saharan deserts. In the search, could not find a similar rounded nodule of specular hematite....it must be a very old one for its wheathered and eroded nature.BTW.....NASA has an old article about hematite and its probably location on Mars surface :
 
http://marsrovers.nasa.gov/spotlight/hematite01.html
 
....and......In the below link, there are lots of pictures of all kid of hematite :
 
http://mars.mines.edu/smplist/GeoMHema/smplist.htm
 
 
Anyway...this little specular hematite stone, will enhance our rock and mineral collection.
 
Hasta la vista,
 
larense
----------------------------------------------------------------------
 
> Date: Thu, 26 Mar 2009 21:49:18 +0100
> From: axelsson at acc.umu.se
> To: gianpgg at hotmail.com
> Subject: Re: [meteorite-list] Strange surface feature
>
> Been there, done that...
>
> In every bulk shipment there are those that are meteowrongs. I've found
> a couple of them, often when buying kilos of small weathered meteorites.
> I got one of Steves freebies when I was new in this area and that was
> also a meteowrong. I guess I got what I paid for.
>
> :-D
>
> In any case, it is always interesting and fun to find out what you
> really got.
>
> H?lsningar G?ran
>
> gian gallo wrote:
>> Hola G?ran. It was sent to us as a meteorite. Following your advice....we get our neomagnet....and put it close to the stone.....result : the stone did not stick to it....so.....your guess point to the right direction. Tonight we will sand a window to see its matrix. Thanks in advance.
>>
>> Hasta la vista,
>>
>> larense
>> ------------------------------------------------------------------------
>>
>>
>>
>>
>>
>>> Date: Thu, 26 Mar 2009 17:54:02 +0100
>>> From: axelsson at acc.umu.se
>>> To: meteorite-list at meteoritecentral.com
>>> Subject: Re: [meteorite-list] Strange surface feature
>>>
>>> Are you sure it is a meteorite? It could be a hematite concretion or
>>> some other earth mineral. The fact that it is heavier than an ordinary
>>> stone but doesn't affect the compass needle sounds like some hematite
>>> iron ore. Hematite could develop mica-like structures.
>>>
>>> G?ran
>>>
>>> gian gallo wrote:
>>>
>>>>> Hola Carl. We are not saying it is mica....it is the arrangement the silvery specks has, that seems to be a mica-like feature. We think that its FC , has weathered away almost completely. It is the only one of the three stones, that can not move our compass needle....and we have not sticked yet, a neo magnet to it. Although the three stones are nearly of the same size, this one is the heaviest. In the below picture, the stone is the one at the right side :
>>>>>
>>>>> http://inlinethumb04.webshots.com/43907/2096345270100862759S600x600Q85.jpg
>>>>>
>>>>> Hasta la vista,
>>>>>
>>>>> larense
>>>>> ------------------------------------------------------------------
>>>>>
>>>>>
>>>>>
>>>>>> Date: Mon, 23 Mar 2009 18:52:08 -0700
>>>>>> From: cdtucson at cox.net
>>>>>> To: gianpgg at hotmail.com
>>>>>> Subject: Re: [meteorite-list] Strange surface feature
>>>>>>
>>>>>> I would like to see the inside. Are you going to slice it? It is very difficult to see anything that looks like mica in photo. Does it have a fusion crust? If you do see mica it may not be a meteorite. Carl
>>>>>>
>>>>>> ---- gian gallo wrote:
>>>>>>
>>>>>>
>>>>>>> Hola to all. Today we recieved three freebies from Steve Arnold ( Chicago ). Thanks you some much, Steve.....and...in one of them, we have found some strange feature on its surface......silvery specks that shines as if it were a mica stone. This feature is only seen if we have the right angle of light to see it. ? Has anyone here seen this before. Any help is welcome. The little stone weights 13.1 grams.
>>>>>>>
>>>>>>> Below, four pictures....of two diferent areas...that shows this strange feature, in direct and reflected light, pictures taken with a stereo - lupe :
>>>>>>>
>>>>>>> First area :
>>>>>>>
>>>>>>> http://inlinethumb56.webshots.com/42871/2739672990100862759S600x600Q85.jpg
>>>>>>> http://inlinethumb57.webshots.com/42168/2856801200100862759S600x600Q85.jpg
>>>>>>>
>>>>>>> Second area :
>>>>>>>
>>>>>>> http://inlinethumb25.webshots.com/42392/2290974480100862759S600x600Q85.jpg
>>>>>>> http://inlinethumb20.webshots.com/43667/2053070070100862759S600x600Q85.jpg
>>>>>>>
>>>>>>> Hasta la vista,
>>>>>>>
>>>>>>> larense
>>>>>>>
>>>>>>>
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Received on Thu 26 Mar 2009 08:29:52 PM PDT