Associated minerals include botryogen,
copiapite, anhydrite, gypsum, melanterite, marcasite and sulfur.
A relatively rare secondary mineral, botryogen occurs as thin, orange-yellow crusts up to several square centimeters in area in the Andrassy III section, associated with epsomite, melanterite and
copiapite (Szakall et al., 1997).
Copiapite sensa stricto may be present where ferrous iron is dominant over magnesium, but samples analyzed have high magnesium.
If the new mineral is clearly and simply related to an existing one, it is very desirable that this relationship be indicated in the new name, e.g., clinoenstatite for the monoclinic dimorph of enstatite, or magnesiocopiapite for the Mg analog of
copiapite. Such a name should consist of one word only (e.g., magnesiocopiapite, not magnesium
copiapite).
Copiapite is suspected as a decomposition product of pyrite and sphalerite (D.