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Parisite?
  
  Index -> FOR BEGINNERS: What is it? Where is it from?
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Bergur_E_Sigurdarson




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PostPosted: Dec 21, 2017 13:41    Post subject: Parisite?  

I recently aquired this specimen in Muzo.

The man I got it from thought it was just brown quartz, but as it had flat terminations I was curious and bought it even though I didn't think so.

After looking at images on mindat.org I could only find similarities with parisite and would love to have this confirmed (even if only by others looking at and commenting on my photo, just the one right now... can add more if it's of too poor quality)

(Specimen size : 2.7cm D x 4.1cm W x 5.2cm H)
Largest XL is 16mm L x 6mm W
and several of them seem to have natural flat terminations.



paris-test-001.jpg
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 2.7cm D x 4.1cm W x 5.2cm H
 Description:
 Viewed:  790 Time(s)

paris-test-001.jpg


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John Betts




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PostPosted: Dec 21, 2017 13:54    Post subject: Re: Parisite?  

The crystal in the lower left corner appears to be hexagonal. That supports the identification of Parisite-(Ce) from Muzo.

To verify I would look for cleavage on the {0001} plane and check for hardness of 4.5 (between fluorite and fluorapatite).

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Bergur_E_Sigurdarson




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PostPosted: Dec 21, 2017 14:31    Post subject: Re: Parisite?  

They are all relatively hexagonal... only distorted by touching adjacent ones in matrix.
All the tops of the ones I suspect to be naturally terminated are very clearly hexagonal too.

What method can you (or anyone) reccommend for checking cleavage planes and hardness without damaging the specimen (I only have that one and never saw anything more while there)

P.S. Thanks John Betts for directing me here to this wonderful website :-)
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John Betts




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PostPosted: Dec 21, 2017 14:43    Post subject: Re: Parisite?  

Look straight down the hexagonal prism. The {0001} face will be the flat face nearest your eye. Inspect each to see if it is a natural termination, or a cleavage face. Look up on the www to learn to recognize a cleavage face from a natural face.
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Bergur_E_Sigurdarson




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PostPosted: Dec 21, 2017 15:23    Post subject: Re: Parisite?  

After looking at the tops of the crystals I can see and think are naturally terminated, they are not completely smooth and shiny, but rather a matte/grainy finish, but in a semi-regular way.
(waxy?)

I took a half-decent pic of a part where I thought it was visible and attched.



paris-id-002.jpg
 Mineral: Parisite-Ce
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 2.7cm D x 4.1cm W x 5.2cm H
 Description:
Partial FOV of specimen in first post
 Viewed:  730 Time(s)

paris-id-002.jpg


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John Betts




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PostPosted: Dec 21, 2017 15:38    Post subject: Re: Parisite?  

Then look for a broken/incomplete crystal to see if you can identify cleavage. Use a 15x loupe of higher magnification.
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Fiebre Verde




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PostPosted: Dec 21, 2017 15:38    Post subject: Re: Parisite?  

If this is from Muzo, I don't see what this could be other than Parisite.
Gérard
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John Betts




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PostPosted: Dec 21, 2017 15:50    Post subject: Re: Parisite?  

Fiebre Verde wrote:
If this is from Muzo, I don't see what this could be other than Parisite.
Gérard


That is true, but Colombian minerals are commonly attributed to Muzo, even though they actually originated at other mines.

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Bergur_E_Sigurdarson




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PostPosted: Dec 21, 2017 16:03    Post subject: Re: Parisite?  

As far as I can see on those crystals that may not be naturally terminated, some are a bit crushed, but even on the ends of those they tend to break across the same plane as the natural terminations (even if uneven in parts, the shiny parts are in that plane)

My specimen also has grey dolomite, calcite and pyrite dots in the matrix.
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John Betts




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PostPosted: Dec 21, 2017 16:05    Post subject: Re: Parisite?  

Bergur_E_Sigurdarson wrote:
on the ends of those they tend to break across the same plane as the natural terminations...


They are parisite.

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Bergur_E_Sigurdarson




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PostPosted: Dec 21, 2017 16:06    Post subject: Re: Parisite?  

John Betts wrote:
Fiebre Verde wrote:
If this is from Muzo, I don't see what this could be other than Parisite.
Gérard


That is true, but Colombian minerals are commonly attributed to Muzo, even though they actually originated at other mines.


I was personally in Muzo... and very familiar with the Colombian thing of just answering "Muzo" when sellers don't know the origin of their stuff (or have been wrongly informed by their providers as most mines are without licences)

The guy was local and only had local things, not even sure he had ever left the area.
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Fiebre Verde




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PostPosted: Dec 21, 2017 16:15    Post subject: Re: Parisite?  

John Betts wrote:
Fiebre Verde wrote:
If this is from Muzo, I don't see what this could be other than Parisite.
Gérard


That is true, but Colombian minerals are commonly attributed to Muzo, even though they actually originated at other mines.

You are absolutely right John.
Muzo is by far the #1 catch-all locality for Colombian specimens found in the entire department of Boyacá.

I don't know where this specimen comes from, then it must be from Muzo...
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Bergur_E_Sigurdarson




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PostPosted: Dec 21, 2017 16:21    Post subject: Re: Parisite?  

Colombian law states that anything found sub-soil on a persons land isn't theirs, but needs a licence from the government to use.
And sadly the government has a long record of not giving licences to the landowers, even if they ask for it, but rather just hand out the licence to the highest bidder (usually following a bribe to the politicians or their family or party) and then taking the land without much or any compensation to the then former landowner!

This has made most Colombians scared of anything being found on their land and if they do find stuff themselves, they try their utmost to hide it. Take the goods to a potential buyer/reseller and lie about the origins.... hence "Muzo" the most famous for anything mineral being attributed to so much!

Also.... thanks everyone for joining in and helping me be 100% on the identity of my Parisite-Ce (and doing so so quickly!)

Kind regards,
Bergur
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Don Lum




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PostPosted: Dec 21, 2017 17:16    Post subject: Re: Parisite?  

Hello Bergur,

Welcome to The Forum. Looking forward to seeing more of your collection.

Happy Holidays.

Regards,

Don

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