Barite pseudomorph after Alstonite

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2nd Sun Vein, Nentsberry Haggs Mine, Nenthead, Cumbria, England
1423
This is a particularly fine specimen from the find some years ago of alstonite replaced by barite. Where they can be seen the crystals centres show a little remnant alstonite and the barite has faithfully retained the original hexagonal habit.
Formulas: Alstonite BaCa(CO3)2 ; Barite BaSO4
Status: Sold
Dimensions: 47x42x35mm
Size: Miniature (M)
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