Svanbergite

Svanbergite

Systems Based on AlP

Published in Vasyl Tomashyk, Multinary Alloys Based on III-V Semiconductors, 2018

The SrAl3(PO4)(SO4)(OH)6 multinary compound (mineral svanbergite), which crystallizes in the trigonal structure with the lattice parameters a = 699.2 ± 0.2 and c = 1,656.7 ± 0.5 pm (Kato and Miúra 1977) [in the rhombohedral structure with the lattice parameters a = 689 and α = 60°38′ and the calculated and experimental densities of 3.18 and 3.20 g cm−3, respectively, or a = 696 ± 3 and c = 1,680 pm in hexagonal setting (Pabst 1947)], is formed in the Al–H–Sr–O–S–P system.

Alteration and mineral zonation at the Mt Lyell copper–gold deposit, Tasmania

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Journal Information

Published in Australian Journal of Earth Sciences, 2018

K. P. Denwer

In sample NL 1058-45.6”, svanbergite [SrAl3(PO4)(SO4)(OH)6], a strontium aluminium phosphate sulfate (APS), was identified using the SEM. The svanbergite is typically intimately intergrown with the chalcocite (Figure 8g). APS minerals have only previously been recognised in advanced argillic alteration zones of porphyry copper deposits and are interpreted to be the product of apatite destruction (Stoffregen & Alpers, 1987).

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Systems Based on AlP

Alteration and mineral zonation at the Mt Lyell copper–gold deposit, Tasmania