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Arsenate

Retzian-(Ce)

Mn²⁺₂Ce(AsO₄)(OH)₄
Hardness4
Crystal systemOrthorhombic
ClassArsenate
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Retzian-(Ce) specimen

Retzian-(Ce) Field of view: 1.2 mm Locality: Moss Mine, Nordmark Odal Field (Nordmarksberg), Filipstad, Värmland County, Sweden Collection & Photograph Christian Rewitzer 11.2019 — Photo: Christian Rewitzer · CC BY-SA 3.0

Retzian-(Ce)

Retzian-(Ce) is an IMA-recognized mineral species in the arsenate class, with the chemical formula Mn²⁺₂Ce(AsO₄)(OH)₄.

It crystallizes in the orthorhombic crystal system (space group Pban). It is a member of the Retzian structural group.

Key properties: Mohs hardness 4; specific gravity 4.15; Pale brown streak; Vitreous to greasy luster; optically biaxial.

IMA symbol Rtz-Ce, IMA status: approved, named in 1982.

A rare mineral found in cavities in porous dolomite.

It is found associated with Jacobsite, pyrochroite.

The mineral was named to honor Professor Anders Johan Retzius (1742–1821), University of Lund, Lund, Sweden, Swedish naturalist, and for cerium, its dominant rare earth element.

Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet. Browse more R minerals or help write this entry.