Qitianlingite
Qitianlingite is an IMA-recognized mineral species in the oxides & hydroxide class, with the chemical formula Fe²⁺₂Nb₂W⁶⁺O₁₀.
It crystallizes in the orthorhombic crystal system (space group Pbcn). It is a member of the Columbite structural group.
Key properties: specific gravity 6.3; Dark brown streak; Semimetallic to metallic luster.
IMA symbol Qit, IMA status: approved, named in 1983.
Found in a pegmatite dike in granite.
It is found associated with Quartz, potassic feldspar, albite, muscovite, zinnwaldite, cassiterite, wolframite, “wolframoixiolite”.
The name refers to Qitianling, China, near where the mineral was first collected.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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