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Formula: Fe3+4(SO4)6(H2O)12.6H2O
Hydrated sulphate, coquimbite group, epitaxial on
coquimbite
Crystal System: Trigonal
Specific gravity: 2.11 measured, 2.115 calculated
Hardness: 2½
Colour: Pale violet
Solubility: Soluble in water
Environments
Paracoquimbite is a rare mineral formed in the oxidised zone of
pyritic hydrothermal orebodies, especially in arid regions. Associated
minerals include coquimbite,
römerite, szomolnokite,
quenstedtite,
ferricopiapite, rozenite
and voltaite
(HOM).
Localities
There are three co-type Localities:
The Alcaparrosa Mine, Sierra Gorda, Antofagasta Province, Antofagasta, Chile
The Queténa Mine, Toki Cu deposit, Chuquicamata District, Calama, El Loa Province, Antofagasta, Chile
Tierra Amarilla, Copiapó Province, Atacama, Chile
Paracoquimbite from the Alcaparrosa Mine -
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Paracoquimbite from Tierra Amarilla -
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