Cabeça do Cachorro claim
São Gabriel da Cachoeira, Amazonas, Brazil
A mining claim for phosphates, which produces crystals of vivianite.
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The crystals from this site occur within phosphatic nodules, and sometimes within ironstone nodules.
The vivianite sometimes replaces fossil specimens from the site and is often gemmy and dark green.
Mindat suggests specimens may be illegally mined – whether this actually refers to specimens from this site or not is difficult to say.
Further reading
We may have specimens from various locales around Amazonas including:
Amazonas
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