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Please help ID, maybe pyrite?
  
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Dirk Black




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PostPosted: Jun 22, 2022 13:02    Post subject: Please help ID, maybe pyrite?  

Good evening. I need some help identifying the attached mineral please. It comes from a farm in the Great Karoo near Prins Albert in South Africa.


IMG_20220622_195702.jpg
 Mineral: I don't know
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Great Karoo, Prins Albert
5mm cubes to 12mm cubes
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IMG_20220622_195702.jpg


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Peter Megaw
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PostPosted: Jun 22, 2022 13:09    Post subject: Re: Please help ID, maybe pyrite?  

These are oxidized pyrite cubes. They are now some form of hydrated iron oxide... You can call them "goethite pseudomorphs after pyrite". These are called "limonite dice" in the sedimentary literature. Nice sharp crystals...keep digging!
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Dirk Black




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PostPosted: Jun 22, 2022 13:10    Post subject: Re: Please help ID, maybe pyrite?  

This might also help with the ID?


IMG_20220612_075817.jpg
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vic rzonca




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PostPosted: Jun 22, 2022 13:12    Post subject: Re: Please help ID, maybe pyrite?  

Goethite after pyrite.
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Dirk Black




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PostPosted: Jun 22, 2022 13:14    Post subject: Re: Please help ID, maybe pyrite?  

Peter Megaw wrote:
These are oxidized pyrite cubes. They are now some form of hydrated iron oxide... You can call them "goethite pseudomorphs after pyrite". These are called "limonite dice" in the sedimentary literature. Nice sharp crystals...keep digging!




Thank you so much, appreciate it 👌👍
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