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Halide

Fiedlerite

Pb₃Cl₄F(OH)·H₂O
Hardness3.5
Crystal systemTriclinic
ClassHalide
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Fiedlerite specimen

Fiedlerite Locality: Lavrion Port slag locality, Lavrion (Laurion; Laurium), Lavrion District slag localities, Lavrion (Laurion; Laurium) District, Attikí (Attica; Attika) Prefecture, Greece Picture width 3 mm. Collection and photograph Christian Rewitzer This Photo was Mindat.org Photo of the Day - 2nd Aug 2007 — Photo: Christian Rewitzer · CC BY-SA 3.0

Fiedlerite

Fiedlerite is an IMA-recognized mineral species in the halide class, with the chemical formula Pb₃Cl₄F(OH)·H₂O.

It crystallizes in the triclinic crystal system (space group P-1).

Key properties: Mohs hardness 3.5; specific gravity 5.88; Adamantine luster; optically biaxial.

IMA symbol Fie, IMA status: approved, named in 1887.

Produced by reaction of halide-bearing seawater and metal-bearing slag.

It is found associated with Penfieldite, laurionite, phosgenite, cotunnite (Laurium, Greece). penfieldite, cotunnite (Baratti Beach, Italy).

The mineral was named to honor Karl Gustav Fiedler (1791–1853), Saxon Commissioner of Mines.

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 F minerals or help write this entry.