DILL H.G. (2003) A comparative
study of APS minerals of the Pacific rim fold belts-With special reference to
South American
argillaceous deposits.- Journal for South American Earth Sciences, 16: 301 –
320; Oxford.
Sites: Cerro Blanco, Agua Shuca, San Isidro, El
Salvador (quartz, opal CT,
cristobalite, alunite-crandallite, alunite, amorphous matter, alunogen,
woodhouseite, gorceixite, aluminite, kaolinite, goethite, florencite, jarosite,
dussertite, lepidocrocite, smectite, feldspar, pyrite), La Noemia, Sangal,
Socosmayo, EI Sol 3, La Providencia, El Guitarrero, Peru (quartz,
tridymite, cristobalite, alunite, svanbergite-woodhouseite, opal CT, barite,
smectite-illite mixed-layer, pyrophyllite, smectite, muscovite, halloysite,
metahalloysite, kaolinite, dickite, zunyite, topaz, anatase, alunite,
svanbergite-woodhouseite, P-bearing alunite, REE-bearing woodhouseite-
svanbergite, florencite-bearing crandallite-goyazite, florencite-goyazite), La Vanguardia, Chile (quartz, muscovite,
kaolinite Ca-Pb-bearing alunite, woodhouseite-hinsdalite, K-bearing
svanbergite-woodhouseite, K-REE-bearing woodhouseite, Ca-Sr-bearing
florencite), Desa Toraget, Indonesia (aluminum sulfates, native sulfur,
kaolinite, Pb-bearing alunite, Pb-bearing alunite-woodhouseite), Cosuno and
Milluri, Bolivia (Ag-Au-Zn-Bi-As minerals, stibnite, quartz, Fe-sulfides,
dickite, kaolinite, nontronite, alunite)