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North American pyrrhotites
  
  Index -> Micros & Macros - Images of Minerals
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dontgogreen




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PostPosted: Jun 13, 2016 09:43    Post subject: North American pyrrhotites  

Here are some photos of a pyrrhotite and calcite from the Eagle Mine in Marquette Co, Michigan. The specimen is ~4cm tall, with a highly lustrous hoppered pyrrhotite crystal. I apologize as the photos are not the best quality and do not capture the quality of the specimen very well. Not to mention the horrific yellow lighting.

What are some other North American localities that produce well-crystallized pyrrhotite?



DSC_1071.JPG
 Mineral: Pyrrhotite
 Locality:
Eagle Mine, Marquette County, Michigan, USA
 Dimensions: 4 cm
 Description:
 Viewed:  2831 Time(s)

DSC_1071.JPG



DSC_1072.JPG
 Mineral: Pyrrhotite
 Locality:
Eagle Mine, Marquette County, Michigan, USA
 Dimensions: 4 cm
 Description:
 Viewed:  2826 Time(s)

DSC_1072.JPG


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GneissWare




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PostPosted: Jun 13, 2016 10:18    Post subject: Re: North American pyrrhotites  

The yellow can be color corrected - its due to using tungsten lights with a camera white balanced for daylight.


t_dsc_1071_176.jpg
 Description:
 Viewed:  2804 Time(s)

t_dsc_1071_176.jpg



t_dsc_1072_156.jpg
 Description:
 Viewed:  2802 Time(s)

t_dsc_1072_156.jpg


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Pete Richards
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PostPosted: Jun 13, 2016 10:20    Post subject: Re: North American pyrrhotites  

Beautiful pyrrhotites and pseudomorphs after pyrrhotite are found at Mont Saint-Hilaire - mostly micros.
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dontgogreen




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PostPosted: Jun 13, 2016 10:32    Post subject: Re: North American pyrrhotites  

Thanks, these corrections look much better.
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Peter Megaw
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PostPosted: Jun 13, 2016 10:59    Post subject: Re: North American pyrrhotites  

Sharp lustrous pyrrhotites to 60cm were found at Santa Eulalia, Chihuahua, Mexico, both as elongate hexagonal crystals and fat hexagonal plates. The district also produced numerous pyrite pseudomorphs after pyrrhotite.

Very similar blocky crystals have also been found at La Negra, Queretaro, Mexico

San Martin-Sabinas, Zacatecas produced sharp lustrous pyrrhotite crystals to 1 cm



SE pyrrhotite big.jpg
 Mineral: Pyrrhotite
 Locality:
Potosí Mine, level 10, Santo Domingo (Francisco Portillo), Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua, Mexico
 Dimensions: 8 x 12 cm
 Description:
Fine example of stout elongate pyrrhotite from the 10th Level Main Silicate Orebody, Potosi Mine. ex Miguel Romero
 Viewed:  2752 Time(s)

SE pyrrhotite big.jpg



SE pyrrhotite.jpg
 Mineral: Pyrrhotite
 Locality:
Potosí Mine, level 10, Santo Domingo (Francisco Portillo), Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua, Mexico
 Dimensions: 4 x 5 x 8 cm
 Description:
Fine example of flat platy pyrrhotite from the 10th Level Main Silicate Orebody, Potosi Mine. Peter Megaw photo and specimen
 Viewed:  2748 Time(s)

SE pyrrhotite.jpg



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alfredo
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PostPosted: Jun 13, 2016 11:07    Post subject: Re: North American pyrrhotites  

I found a nice TN-size pyrrhotite crystal at the Philips Pyrite Mine, Putnam Co., New York, but within a few months it first swelled up, separated into lamellae, then decomposed into sulphate slop :((
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Tony L. Potucek




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PostPosted: Jun 13, 2016 22:02    Post subject: Re: North American pyrrhotites  

The Laxey Mine (Texas Orebody) and the Sonneman Mine at South Mountain, Owyhee County, Idaho USA both produced pyrrhotite as crystals associated with quartz.
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