Graulichite-(Ce)

graulichite-(Ce)

arsenopyrite

scorodite

pharmacosiderite

Images

Formula: CeFe3+3(AsO4)2(OH)6
Arsenate, dussertite group, cerium-bearing mineral
Specific gravity: 4.42 calculated
Colour: Light-green to brownish
Luminescence: Non-fluorescent
Weakly RADIOACTIVE
Environments

Metamorphic environments

Localities

At the type locality, Hourt quarry, Grand-Halleux, Vielsalm, Luxembourg, Wallonia, Belgium, graulichite-(Ce) occurs as 80 to 150 μ spherical aggregates of rhombohedral crystals, 50 to 80 μ in length, in the most altered parts of a quartzite, in close association with arsenopyrite, scorodite, mimetite, pharmacosiderite and goethite (EJM 15.733-739).

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