Abstract
A study of the composition and unit cell data of a suite of lead-rich minerals of the alunite-jarosite group from the oxidized zone of the ore body at Broken Hill, New South Wales, Australia, has revealed almost complete XO4 (X = As, P. S) solid solution in these minerals at this deposit. The species in the group noted are hidalgoite, hinsdalite, beudantite, segnitite and plumbogummite. These minerals at Broken Hill exhibit a number of growth textures, including oscillatory zoning, colloform handing and replacements. Zoning in these minerals is due to the segregation of Al- and Fe-rich members, and compositions indicate a strong coupling of Fe3+ with AsO43- and Al with PO43-.
Original language | English |
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Pages (from-to) | 779-785 |
Number of pages | 7 |
Journal | Mineralogical Magazine |
Volume | 60 |
Issue number | 402 |
DOIs | |
Publication status | Published - 1 Oct 1996 |
Keywords
- Alunite-type minerals
- Australia
- Broken Hill
- Hidalgoite
- Plumbogummite
- Segregation
- Solid-solution