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Parisite?
  
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Bergur_E_Sigurdarson




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PostPosted: Jul 16, 2018 10:30    Post subject: Parisite?  

[Jordi's note:

For the special features of the messages in this thread that were published in Collection of Bergur E. Sigurdarson I separated them and placed them here so they do not interfere with the style of the "Collector's photos and collector's page" section.
Please note that some comments from here are related with these two posts:
https://www.mineral-forum.com/message-board/viewtopic.php?p=63533#63533
and
https://www.mineral-forum.com/message-board/viewtopic.php?p=63534#63534
due the impossibility to separate these specific comments.]


I've been travelling lately and thus not many posts of either what I had in my collection or what has been aquired this year.
While I'm still on the road, I just had to add this awesome parisite? specimen I just got a few days ago. Could do with some cleaning to really make it shine, but still very presentable.



parisite-001.jpg
 Mineral: Parisite-(Ce)? Dolomite, Quartz
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 107mm x 49mm x 34mm
 Description:
XL dimensions are appx.:
26mm x 12mm x 10mm
 Viewed:  1988 Time(s)

parisite-001.jpg



parisite-002.jpg
 Mineral: Parisite-(Ce)? Dolomite, Quartz
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 107mm x 49mm x 34mm
 Description:
XL dimensions are appx.:
26mm x 12mm x 10mm
 Viewed:  1985 Time(s)

parisite-002.jpg



parisite-003.jpg
 Mineral: Parisite-(Ce)? Dolomite, Quartz
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 107mm x 49mm x 34mm
 Description:
XL dimensions are appx.:
26mm x 12mm x 10mm
 Viewed:  1987 Time(s)

parisite-003.jpg



parisite-004.jpg
 Mineral: Parisite-(Ce)? Dolomite, Quartz
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 107mm x 49mm x 34mm
 Description:
XL dimensions are appx.: 26mm x 12mm x 10mmThis photo shows the reflections of the complex termination quite well
 Viewed:  1989 Time(s)

parisite-004.jpg


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Fiebre Verde




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PostPosted: Jul 16, 2018 10:53    Post subject: Re: Parisite?  

Bergur_E_Sigurdarson wrote:
I've been travelling lately and thus not many posts of either what I had in my collection or what has been aquired this year.
While I'm still on the road, I just had to add this awesome parisite specimen I just got a few days ago. Could do with some cleaning to really make it shine, but still very presentable.

Hi Bergur,
Congratulations, that's a fairly large crystal for Muzo!
Your comment on the last image "This photo shows the reflections of the complex termination quite well"
Some of these geometrical patterns look rather like contact areas to me!
Gérard
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Bergur_E_Sigurdarson




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PostPosted: Jul 16, 2018 14:12    Post subject: Re: Parisite?  

Fiebre Verde wrote:
Bergur_E_Sigurdarson wrote:
I've been travelling lately and thus not many posts of either what I had in my collection or what has been aquired this year.
While I'm still on the road, I just had to add this awesome parisite specimen I just got a few days ago. Could do with some cleaning to really make it shine, but still very presentable.

Hi Bergur,
Congratulations, that's a fairly large crystal for Muzo!
Your comment on the last image "This photo shows the reflections of the complex termination quite well"
Some of these geometrical patterns look rather like contact areas to me!
Gérard


Hey :-)

I'm quite certain those aren't contact points, as that is the end of the crystal that is on the inside of the vug of the specimen (towards the dolomites and quartzes ...left in first photo)

regards,
Bergur
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minsur




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PostPosted: Aug 27, 2018 08:59    Post subject: Re: Parisite?  

Are you sure this is really Parisite??
Color and patterns indicate Sphalerite, but this is only an educated guess based on a pic...

The Pyrites come most probably from the Gachalá aerea, where recently quite a few iron-cross-twins were collected, partly altered to and covered with the same kind of Limonite
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Bergur_E_Sigurdarson




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PostPosted: Aug 27, 2018 09:20    Post subject: Re: Parisite?  

Well... I really hadn't considered Sphalerite as an option.
It is from the Muzo area and neither that, nor the entire Boyaca dept. have Sphalerite listed as being found there on Mindat.org ....so... having seen some irregularly shaped Parisites I did just assume from the shapes present, which to me also seemed to match Parisite.

Thanks for info on possible source of Limonite after Pyrite cubes :-)

minsur wrote:
Are you sure this is really Parisite??
Color and patterns indicate Sphalerite, but this is only an educated guess based on a pic...

The Pyrites come most probably from the Gachalá aerea, where recently quite a few iron-cross-twins were collected, partly altered to and covered with the same kind of Limonite
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Bergur_E_Sigurdarson




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PostPosted: Aug 27, 2018 10:51    Post subject: Re: Parisite?  

I think the questioning of the Parisite referred to the specimen that had several photos of it... and not the bladed Baryte on Quartz one.
Just to clarify, in case of confusion :-P

I hopefully got it right with the Parisite... but if unknown, I'd be at least as happy with it turning out to be Sphalerite .... can hopefully have some people look at it in person before I leave the US that are better than I am in ID-ing

The bladed Baryte on Quartz, is indeed unknown form for me from Colombia.... I will have it looked at as well, if I get the chance... as we all know, photos have limitations :-D

Fiebre Verde wrote:
minsur wrote:
Are you sure this is really Parisite??
Color and patterns indicate Sphalerite, but this is only an educated guess based on a pic...

The Pyrites come most probably from the Gachalá aerea, where recently quite a few iron-cross-twins were collected, partly altered to and covered with the same kind of Limonite


Got the same locality information for the weathered pyrite - Gachalá is a good hint.

As for the other picture, the crystal blade form is unusual for parisite.
Difficult to tell with a photo, but the color reminds me a bit of the barite found in La Marina, next to Muzo and Coscuez. But in La Marina, barite is typically found as thick to thin tabular crystals...
Am not aware of crystallized sphalerite from any of the Colombian emerald districts.
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Fiebre Verde




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PostPosted: Aug 27, 2018 11:01    Post subject: Re: Parisite?  

Bergur_E_Sigurdarson wrote:
I think the questioning of the Parisite referred to the specimen that had several photos of it... and not the bladed Baryte on Quartz one.
Just to clarify, in case of confusion :-P

Sorry for the confusion, I was focused on your 2 last specimens and mistakenly used some comments referring to your very first specimen which had several images.
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Bergur_E_Sigurdarson




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PostPosted: Aug 27, 2018 11:40    Post subject: Re: Parisite?  

Adding to the Parisite? selection.... here are some more.

The first (paris-001.jpg) has similar structure and colour to the previously posted big one... but just as groups of short almost spherical like ones... also resembling the Sphalerite structure.
Also present in the matrix ... Pyrite and something quite green (not my bad colour balancing :-P )

Second (paris-002.jpg) has a more familiar shape to the crystals, the colour is also a lot lighter... but in this one they're much more embedded in the matrix.

Third (paris-003.jpg) are just some loose crystals, the most familiar in both colour and shape.



paris-001.jpg
 Mineral: Parisite-(Ce)?
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 28mm x 21mm x 27mm
 Description:
Crystal group is about 10mm with each xl being 3mm or smaller
 Viewed:  1298 Time(s)

paris-001.jpg



paris-002.jpg
 Mineral: Parisite-(Ce)
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: 46mm x 31mm x 36mm
 Description:
The five main xls range in 8-11mm in lenghtand just over 2-5mm in width
 Viewed:  1277 Time(s)

paris-002.jpg



paris-003.jpg
 Mineral: Parisite-(Ce)
 Locality:
Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: L-R: 13mm x 9mm ;7mm x 9mm; 11mm x 9mm; 12mm x 8-2mm
 Description:
Listing XLs from left to right, first their length, then max width, with last one tapering to a small point
 Viewed:  1277 Time(s)

paris-003.jpg


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Jordi Fabre
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PostPosted: Aug 27, 2018 14:55    Post subject: Re: Parisite?  

Bergur,

I'm almost sure that the "Parisites-(Ce)" from the post https://www.mineral-forum.com/message-board/viewtopic.php?p=62754#62754 as well as this other one: https://www.mineral-forum.com/message-board/download.php?id=88146 them all are in fact Sphalerites.

Do you want I change it to "Sphalerite" in your captions?
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Bergur_E_Sigurdarson




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PostPosted: Aug 27, 2018 15:15    Post subject: Re: Parisite?  

Please change it to what is correct :-)

In the earlier one text would then become :

"I've been travelling lately and thus not many posts of either what I had in my collection or what has been aquired this year.
While I'm still on the road, I wanted to add this Sphalerite specimen I just got a few days ago. Could do with some cleaning to really make it shine, but still very presentable. "

And the second post:

"Adding to the Sphalerite and Parisite selection.... here are some more.

The first (paris-001.jpg) has similar structure and colour to the previously posted big one... but just as groups of short almost spherical like ones... also resembling the Sphalerite structure... and now reviewed by Jordi as such.
Also present in the matrix ... Pyrite and something quite green (not my bad colour balancing :-P )

Second (paris-002.jpg) has a more familiar shape to the crystals, the colour is also a lot lighter... but in this one they're much more embedded in the matrix.

Third (paris-003.jpg) are just some loose crystals, the most familiar in both colour and shape. "


Thanks, Bergur

P.S. just delete this comment after editing has been done (I would do it myself, but can't see a button for that except on the latest post)

Jordi Fabre wrote:
Bergur,

I'm almost sure that the "Parisites-(Ce)" from the post https://www.mineral-forum.com/message-board/viewtopic.php?p=62754#62754 as well as this other one: https://www.mineral-forum.com/message-board/download.php?id=88146 them all are in fact Sphalerites.

Do you want I change it to "Sphalerite" in your captions?
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PostPosted: Aug 27, 2018 16:43    Post subject: Re: Parisite?  

Bergur_E_Sigurdarson wrote:
...P.S. just delete this comment after editing has been done (I would do it myself, but can't see a button for that except on the latest post)...

I did something different... ;-)
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Bergur_E_Sigurdarson




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PostPosted: Aug 27, 2018 16:57    Post subject: Re: Parisite?  

Excellent solution... and no less to be expected from the master :-D

Some of those may re-appear in my collection, once they've been more properly identified/verified

regards,
Bergur
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PostPosted: Aug 27, 2018 17:00    Post subject: Re: Parisite?  

Bergur_E_Sigurdarson wrote:
...Some of those may re-appear in my collection, once they've been more properly identified/verified...

Perfect
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PostPosted: Aug 28, 2018 04:52    Post subject: Re: Parisite?  

Sphalerite is not uncommon at all - at least in the Western Emerald Belt. Actually there is a lot of small scale mining going on, sometimes with funny new things being discovered.
Most (but not all) locals do have very poor mineralogical knowledge combined with a MUCH better instinct how to make a nice profit. They would sell, or try to sell, just about anything "brownish" (Sphalerite or even Siderite) as Parisite, for a simple reason - a better price. For them;-)
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Bergur_E_Sigurdarson




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PostPosted: Aug 28, 2018 07:25    Post subject: Re: Parisite?  

Well... the seller in this case didn't claim it to be anything, I just picked it out of all the rocks in the window. (the one large in inthe vug) And for it to be something I haven't gotten or seen in Colombia before I'm fine with what I paid.
In the case of the small piece, I was told by the seller it was parisite, and the price was considerably higher (a jeweller in the Emerald trade center)... but I also doubt him knowing the truth... not the kind of store that has any fakes/artesanias in general.

What surprises me most, is that if sphalerite isn't that uncommon in the western emerald belt, it isn't already listed on mindat.org :-P
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PostPosted: Aug 28, 2018 09:32    Post subject: Re: Parisite?  

Bergur_E_Sigurdarson wrote:
Well... the seller in this case didn't claim it to be anything, I just picked it out of all the rocks in the window. (the one large in in the vug) And for it to be something I haven't gotten or seen in Colombia before I'm fine with what I paid.
In the case of the small piece, I was told by the seller it was parisite, and the price was considerably higher (a jeweller in the Emerald trade center)... but I also doubt him knowing the truth... not the kind of store that has any fakes/artesanias in general.

What surprises me most, is that if sphalerite isn't that uncommon in the western emerald belt, it isn't already listed on mindat.org :-P

I have attached a photo I just received from a mineral lover who lives in Colombia.
He often visits the Boyacá mining districts and told me that this specimen was found in a mine nearby Coscuez.
This is a total surprise for me - minsur is right and mindat is... mindat (not perfect).
Apologies for the poor quality of the image - that's all I have.



sphalerite.JPG
 Mineral: Sphalerite, Pyrite, Calcite
 Locality:
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department, Colombia
 Dimensions: couple of centimeters
 Description:
 Viewed:  972 Time(s)

sphalerite.JPG


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