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I hesitate between Sweet Home Mine and Peru (聲cash)
  
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Roger Warin




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PostPosted: Sep 10, 2022 00:23    Post subject: I hesitate between Sweet Home Mine and Peru (聲cash)  

Hi,
In the Rostenne collection, we find a beautiful rhodochrosite.
The photo was taken in 2003. I forgot its origin.
I hesitate between Sweet Home Mine and Peru (聲cash).
A pyrolusite is grafted on it.
The small white crystals appear to be quartz but the morphology is strange.
Thanks.



Rhodochrosite_0732_R.jpg
 Mineral: Rhodochrosite
 Description:
Locality: unknow
12 cm height
with quartz ?
 Viewed:  907 Time(s)

Rhodochrosite_0732_R.jpg


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Carles Millan
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PostPosted: Sep 10, 2022 02:59    Post subject: Re: I hesitate between Sweet Home Mine and Peru (聲cash)  

I would say it's from Huayllapon Mine, Pasto Bueno, Ancash, Peru.
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Roger Warin




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PostPosted: Sep 10, 2022 07:15    Post subject: Re: I hesitate between Sweet Home Mine and Peru (聲cash)  

Thanks a lot
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Volkmar Stingl




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PostPosted: Sep 10, 2022 10:04    Post subject: Re: I hesitate between Sweet Home Mine and Peru (聲cash)  

Are you sure, that the clear white crystals are quartz? For me they seem to be fluorite with cubic morphology.

Volkmar
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James Catmur
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PostPosted: Sep 10, 2022 13:26    Post subject: Re: I hesitate between Sweet Home Mine and Peru (聲cash)  

I agree
Volkmar Stingl wrote:
Are you sure, that the clear white crystals are quartz? For me they seem to be fluorite with cubic morphology.

Volkmar
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Roger Warin




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PostPosted: Sep 12, 2022 00:02    Post subject: Re: I hesitate between Sweet Home Mine and Peru (聲cash)  

I had privileged from the start the examination of the photo the Peruvian origin of this rhodochrosite, a rich locality rich in quartz.
I had of course seen the morphology of this secondary crystallization.
But I didn't dare say fluorite.
Here is an enlargement of this "fluorite".
Thank you for your help.



Rhodochrosite_0732-agrandissement.jpg
 Mineral: Rhodochrosite and Fluorite
 Locality:
Huayllapon Mine (Huallapon Mine), Pasto Bueno District, Pallasca Province, Ancash Department, Peru
 Description:
enlargement
 Viewed:  615 Time(s)

Rhodochrosite_0732-agrandissement.jpg


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Tobi
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PostPosted: Sep 12, 2022 03:13    Post subject: Re: I hesitate between Sweet Home Mine and Peru (聲cash)  

Roger Warin wrote:
[...] A pyrolusite is grafted on it [...].

Hi Roger, is it confirmed/analyzed that the dark crystal is pyrolusite?
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Roger Warin




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PostPosted: Sep 12, 2022 14:09    Post subject: Re: I hesitate between Sweet Home Mine and Peru (聲cash)  

Hi Toby,
This beautiful rhodochrosite is currently in the National Museum of Natural History in Luxembourg (in the very pleasant Latin Quarter of Grund to visit), since 2005-2006. Fortunately, I had a photo in 2003.
The question should be put to Dr. Simon Philippo who is the curator of the collection.
Personally, I have considered that pyrolusite is often found on top of rhodochrosite. His kidney habit confirmed this secondary attribution to me.
My close friend Andr Rostenne never asked himself this question, captivated by the main crystal. I accompanied him when he bought this specimen during the Mineralientage Muenchen.
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