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Identity HelpFilon 340, Rodalquilar, Spain

10th Sep 2023 13:53 UTCJonathan Gerard Gandy

08719350017068607099704.jpg
I see this brick brown perfectly square edged mineral in a pocket, also a smaller one lower edge of image. I can't find a likely mineral listed for Filon 340 on Mindat.
This photo taken using loop and mobile phone, field of view is perhaps 4mm at most. 
Any ideas? 


Questions Answered
Can it scratch glass? : Unable to test
Can you scratch it with your fingernail? : Unable to test
Is it light/heavy for the size? : Unable to test

10th Sep 2023 18:09 UTCEd Clopton 🌟 Expert

Thanks for explaining how the photo was taken; that should head off some complaints about its being out of focus, etc.

Unfortunately it's difficult to tell much from the photo.  Pyrite is on the species list for the locality; if these truly are "perfectly square" (i.e., cubic), they could be oxidized pyrite crystals.  Siderite would be another possibility, along with a host of others.
 
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