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A unknow 'mineral' from China.
  
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chinarocks




Joined: 05 Mar 2007
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PostPosted: Mar 15, 2007 06:49    Post subject: A unknow 'mineral' from China.  

This 'mineral' is I buyed from an stone market in Beijing half a year ago.Dear friends,who can tell me what mineral it is?Thanks.


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Jordi Fabre
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PostPosted: Mar 16, 2007 04:34    Post subject: Re: A unknow 'mineral' from China.  

It looks to me like Smithsonite. It is heavy or light? do you know from what mine the specimen came?

Jordi
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chinarocks




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PostPosted: Mar 18, 2007 10:12    Post subject:  

I don't know where mine is it came,I only know it's from China.I think it like a kind of aragonite.Have the possibility?
Jiangbin
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Jordi Fabre
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PostPosted: Mar 19, 2007 03:56    Post subject: China's mineral identification  

It is very hard to identify minerals just by its photo, so it could be Aragonite as well as many other mineral species. That's why I requested if the specimen is heavy (more heavy than usual).
Aragonite and Calcite are no so heavy, and Smithsonite yes, so it would be a good help to know if the specimen is more heavy than usual or not.

Jordi
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ChineseMinerals




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PostPosted: Mar 20, 2007 15:00    Post subject:  

I think Jordi's way for identify is much smoothly,Though I also guess if it is aragonite..

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John
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ChineseMinerals




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PostPosted: Mar 29, 2007 14:20    Post subject: What is this??  

I got this specimen several month ago.Are calcite,inesite also HuBeite in this specimen???

Its details:
Location:FengJiaShan Mine,DaYe,HuBei province China
Size:10cm*6cm*6cm


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John



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ChineseMinerals




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PostPosted: Mar 29, 2007 14:23    Post subject: Close photo 1  

For see its details I made its close photos.


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ChineseMinerals




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PostPosted: Mar 29, 2007 14:26    Post subject: Last close photo  

Last close photo details.OVER.


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John



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lluis




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PostPosted: Mar 29, 2007 15:37    Post subject:  

For the mineral combo
For colours, indeed it is hubeite and inesite.
Inesite is sure
Hubeite, an analysis would be good, but for association, it looks to me as hubeite.


For what is the botroidal mineral

To distinguish among calcite/aragonite and smithsonite.
Take a small piece, Dissolve in chlorhidric acid. Add sodium sulfate and some drops alcohol. A precipitate (even without alcohol) means calcite/aragonite.

If it is calcite/aragonite, I think to remember the Meigen reaction: boil with cobalt nitrate.
If coloured blue, aragonite. If unaltered, calcite.

Disclaimer: when using chemiical reactives, always use glasses, gloves and adequated protection. Work in well ventiled places. Be careful.

Best wishes

Lluís
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ChineseMinerals




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PostPosted: Mar 30, 2007 15:09    Post subject:  

Thank you lluis!!!!I did learn more from you.Thank you for your reply,I appreciate that very much!!!

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John
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