Bairdite
Bairdite is an IMA-recognized mineral species in the sulfate class, with the chemical formula Pb₂Cu²⁺₄Te⁶⁺₂O₁₀(OH)₂(SO₄)·H₂O.
It crystallizes in the monoclinic crystal system (space group P2_1/c).
Key properties: Mohs hardness 2–3; specific gravity 6.062; Pale lime-green streak; Adamantine luster; optically biaxial.
IMA symbol Bai, IMA status: approved, named in 2012.
Found as a secondary mineral in vugs in quartz formed from the partial oxidation of primary sulfides and tellurides during or following the brecciation of quartz veins.
It is found associated with Khinite, cerussite, goethite, hematite.
The mineral was named to honor Jerry A. Baird (b. 1940) of Lake Havasu City, Arizona, USA. Baird, a mineral collector for 45 years.
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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