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Alunite from Mexico

E0A-39WMimetite Pb5(AsO4)3Cl , Alunite KAl3(SO4)2(OH)6 , Quartz SiO2

02188060017362103264656.jpg
Milpillas Mine, Milpillas, Santa Cruz Municipality, Sonora, Mexico

Dimensions: 5.0 cm x 2.5 cm x 2.5 cm
Largest Crystal Size: 1.0 cm

First discovered while deep in the sulfide ore body in late 2022 but kept very quiet till mid 2023. Found in the same tunnel as the Zincolivenites of late 2022/23. The pocket has produced several crystal forms including pure gem crystals. Large double terminated crystals with yellow caps were also discovered. These are also fluorescent under short wave UV light.
This will be the first addition to the mineral record for this species. It was just published in the MinRec Vol 55 Jan-Feb 2024
Copyright: © Dr. Brendan P O'Connor      Photo ID: 1349985     Uploaded by: Dr. Brendan O'Connor   Approval date: 2024-02-01   View Count: 208   Approval status: Public galleries    Type: Photo - 3606 x 2458 pixels (8.9 Mpix)
 
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